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Bartlett KA, Charland-Martin A, Lawton J, Tomlinson AL, Collier GS. Azomethine-Containing Pyrrolo[3,2-b]pyrrole Copolymers for Simple and Degradable Conjugated Polymers. Macromol Rapid Commun 2024; 45:e2300220. [PMID: 37449343 DOI: 10.1002/marc.202300220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/14/2023] [Accepted: 07/04/2023] [Indexed: 07/18/2023]
Abstract
Conjugated polymers have received significant attention as potentially lightweight and highly tailorable alternatives to inorganic semiconductors, but their synthesis is often complex, produces toxic byproducts, and they are not typically designed to be degradable or recyclable. These drawbacks necessitate dedicated efforts to discover materials with design motifs that enable targeted and efficient degradation of conjugated polymers. In this vein, the synthetic simplicity of 1,4-dihydropyrrolo[3,2-b]pyrroles (DHPPs) is exploited to access azomethine-containing copolymers via a benign acid-catalyzed polycondensation protocol. Polymerizations involve reacting a dialdehyde-functionalized dihydropyrrolopyrrole with p-phenylenediamine as the comonomer using p-toluenesulfonic acid as a catalyst. The inherent dynamic equilibrium of the azomethine bonds subsequently enabled the degradation of the polymers in solution in the presence of acid. Degradation of the polymers is monitored via NMR, UV-vis absorbance, and fluorescence spectroscopies, and the polymers are shown to be fully degradable. Notably, while absorbance measurements reveal a continued shift to higher energies with extended exposure to acid, fluorescence measurements show a substantial increase in the fluorescence response upon degradation. Results from this study encourage the continued development of environmentally-conscious polymerizations to attain polymeric materials with useful properties while simultaneously creating polymers with structural handles for end-of-life management or/and recyclability.
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Affiliation(s)
- Kimberley A Bartlett
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, USA
| | - Ariane Charland-Martin
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, USA
| | - Jonathan Lawton
- Department of Chemistry and Biochemistry, University of North Georgia, Dahlonega, GA, 30597, USA
| | - Aimée L Tomlinson
- Department of Chemistry and Biochemistry, University of North Georgia, Dahlonega, GA, 30597, USA
| | - Graham S Collier
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA, 30144, USA
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52
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Ramki K, Thiruppathi G, Ramasamy SK, Sundararaj P, Sakthivel P. An aggregation-induced emission-based ratiometric fluorescent chemosensor for Hg(II) and its application in Caenorhabditis elegans imaging. Methods 2024; 221:1-11. [PMID: 38000523 DOI: 10.1016/j.ymeth.2023.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/18/2023] [Accepted: 11/21/2023] [Indexed: 11/26/2023] Open
Abstract
A chromone-based ratiometric fluorescent probe L2 was developed for the selective detection of Hg(II) in a semi-aqueous solution based on aggregation-induced emission (AIE) and chelation-enhanced fluorescence (CHEF) effect. The probe L2 fluoresced significantly at 498 nm in its aggregated state, and when chelated with Hg(II), the soluble state fluoresced 1-fold higher. In addition, Job's plot reveals that the probe forms a 1:1 stoichiometry complex with Hg(II) with an association constant of 9.10 × 103M-1 estimated by the BH plot. The probe L2 detects Hg(II) down to 22.47 nM without interference from other interfering ions. The FTIR, ESI mass, and DFT-based computational studies investigated the binding mechanism of probe L2 with Hg(II). Taking advantage of its AIE characteristics, the probe L2 was successfully applied for bio-capability analysis in Caenorhabditis elegans (a nematode worm) imaging of Hg(II) in a living model.
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Affiliation(s)
- K Ramki
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India; Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India.
| | - G Thiruppathi
- Department of Zoology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - Selva Kumar Ramasamy
- Department of Chemistry, M.M. Engineering College, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala 133 207, Haryana, India
| | - P Sundararaj
- Department of Zoology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - P Sakthivel
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India.
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Abstract
Bioadhesives have emerged as transformative and versatile tools in healthcare, offering the ability to attach tissues with ease and minimal damage. These materials present numerous opportunities for tissue repair and biomedical device integration, creating a broad landscape of applications that have captivated clinical and scientific interest alike. However, fully unlocking their potential requires multifaceted design strategies involving optimal adhesion, suitable biological interactions, and efficient signal communication. In this Review, we delve into these pivotal aspects of bioadhesive design, highlight the latest advances in their biomedical applications, and identify potential opportunities that lie ahead for bioadhesives as multifunctional technology platforms.
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Affiliation(s)
- Sarah J Wu
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xuanhe Zhao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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54
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Suzuki H, Akiyama Y, Yamashina M, Tanaka Y, Toyota S. Transformation of Highly Hydrophobic Triarylphosphines into Amphiphiles via Staudinger Reaction with Hydrophilic Trichlorophenyl Azide. Chemistry 2023; 29:e202303017. [PMID: 37766651 DOI: 10.1002/chem.202303017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 09/29/2023]
Abstract
Owing to its hydrophobic properties and reactivity, triarylphosphines (PAr3 ) are promising precursors for the development of new amphiphiles. However, an efficient and reliable synthetic method for amphiphiles based on highly hydrophobic PAr3 is still required. Herein, a straightforward transformation of highly hydrophobic PAr3 into amphiphiles via the Staudinger reaction is reported. By simply mixing PAr3 and a hydrophilic trichlorophenyl azide containing two hydrophilic chains, amphiphiles bearing a N=P bond (i. e., an azaylide moiety) were quantitatively formed. The obtained azaylide-based amphiphiles were remarkably water-soluble, enabling their spontaneous self-assembly into 2 nm-sized micelles composed of 4-5 molecules in water with a low critical micelle concentration (up to 0.05 mM or less) due to the effective intermolecular interactions among the hydrophobic surfaces. Although the azaylide moiety is easily hydrolyzed in the presence of water, the azaylide in the amphiphiles displayed notable stability in water even at 60 h, which stems from the LUMO modulation induced by the presence of three electron-withdrawing chloro groups and two twisted alkoxycarbonyl groups, according to DFT calculations. An amphiphile having a large hydrophobic surface solubilized various hydrophobic organic dyes through efficient intermolecular interactions, resulting in the dyes exhibiting either monomer or excimer emissions in water.
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Affiliation(s)
- Hayate Suzuki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Yoshimori Akiyama
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Masahiro Yamashina
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Yuya Tanaka
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Shinji Toyota
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
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55
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Weigel RK, Rangamani A, Alabi CA. Synthetically encoded complementary oligomers. Nat Rev Chem 2023; 7:875-888. [PMID: 37973830 DOI: 10.1038/s41570-023-00556-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2023] [Indexed: 11/19/2023]
Abstract
Creating the next generation of advanced materials will require controlling molecular architecture to a degree typically achieved only in biopolymers. Sequence-defined polymers take inspiration from biology by using chain length and monomer sequence as handles for tuning structure and function. These sequence-defined polymers can assemble into discrete structures, such as molecular duplexes, via reversible interactions between functional groups. Selectivity can be attained by tuning the monomer sequence, thereby creating the need for chemical platforms that can produce sequence-defined polymers at scale. Developing sequence-defined polymers that are specific for their complementary sequence and achieve their desired binding strengths is critical for producing increasingly complex structures for new functional materials. In this Review Article, we discuss synthetic platforms that produce sequence-defined, duplex-forming oligomers of varying length, strength and association mode, and highlight several analytical techniques used to characterize their hybridization.
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Affiliation(s)
- R Kenton Weigel
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA
| | - Adithya Rangamani
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA
| | - Christopher A Alabi
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, USA.
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56
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Wang M, Jin Y, Zhang W, Zhao Y. Single-crystal polymers (SCPs): from 1D to 3D architectures. Chem Soc Rev 2023; 52:8165-8193. [PMID: 37929665 DOI: 10.1039/d3cs00553d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Single-crystal polymers (SCPs) with unambiguous chemical structures at atomic-level resolutions have attracted great attention. Obtaining precise structural information of these materials is critical as it enables a deeper understanding of the potential driving forces for specific packing and long-range order, secondary interactions, and kinetic and thermodynamic factors. Such information can ultimately lead to success in controlling the synthesis or engineering of their crystal structures for targeted applications, which could have far-reaching impact. Successful synthesis of SCPs with atomic level control of the structures, especially for those with 2D and 3D architectures, is rare. In this review, we summarize the recent progress in the synthesis of SCPs, including 1D, 2D, and 3D architectures. Solution synthesis, topochemical synthesis, and extreme condition synthesis are summarized and compared. Around 70 examples of SCPs with unambiguous structure information are presented, and their synthesis methods and structural analysis are discussed. This review offers critical insights into the structure-property relationships, providing guidance for the future rational design and bottom-up synthesis of a variety of highly ordered polymers with unprecedented functions and properties.
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Affiliation(s)
- Mingsen Wang
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266000, China.
| | - Yinghua Jin
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, USA.
| | - Wei Zhang
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, USA.
| | - Yingjie Zhao
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266000, China.
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57
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Ren X, Liu K, Lu Y, Ding W, Lei S, Yang L. Stepwise versus Concerted: Theoretical Insights into the Stereoselectivity in Aryl Imine Formation Assisted by Acid and Water. J Phys Chem A 2023; 127:9748-9759. [PMID: 37938831 DOI: 10.1021/acs.jpca.3c05530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
The wide applications of the aryl Schiff base require extensive understanding of the mechanism of its formation, which remains unclear. In this work, the detailed formation mechanisms between benzaldehyde and aniline or 4-(9-anthryl) ethynyl aniline were investigated at the CCSD(T)//B3LYP level, and the influence of water molecules and acid catalysis and the stereoselectivity were addressed. The results show that the participation of explicit water molecules greatly accelerates the reactions by alleviating the ring tension of the transition states, and acid catalysis strongly favors the imine formation and provides driving force for the forward reaction. In acidic conditions, both N-protonated carbinolamine formations and imine formations are achieved under mild conditions with the assistance of water molecules, and the proton transfer is more advanced than the C-N and C═N bond formation, which is in good agreement with the experimental observations. In contrast, under neutral conditions, even with the assistance of two water molecules, the reaction is hard to take place at room temperature owing to the high Gibbs free energy barriers with the proton transfer and the C-N or C═N bond formation concerted. The analysis of stereoselectivity shows that the formation of trans imine is both kinetically and thermodynamically more favorable than the cis one under the acidic condition with the assistance of water molecules, and the presence of conjugated substituent 4-(9-anthryl) ethynyl of aniline marginally raises the energy barriers. This work provides a systematic view of the mechanism for the formation of aryl imine and is expected to offer insights for the control of the dynamic covalent chemistry and the synthesis of covalent organic frameworks.
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Affiliation(s)
- Xiaoyuan Ren
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
- HTA Company Limited, Beijing 102413, People's Republic of China
| | - Kai Liu
- College of Life Sciences, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Yajie Lu
- Wenzhou Institute, University of Chinese Academy of Sciences, 1 Jinlian Street, Wenzhou 325000, People's Republic of China
| | - Wanjian Ding
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Shengbin Lei
- Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, People's Republic of China
| | - Ling Yang
- Wenzhou Institute, University of Chinese Academy of Sciences, 1 Jinlian Street, Wenzhou 325000, People's Republic of China
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58
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Situ B, Zhang Z, Zhao L, Tu Y. Graphene oxide-based large-area dynamic covalent interfaces. NANOSCALE 2023; 15:17739-17750. [PMID: 37916524 DOI: 10.1039/d3nr04239a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Dynamic materials, being capable of reversible structural adaptation in response to the variation of external surroundings, have experienced significant advancements in the past several decades. In particular, dynamic covalent materials (DCMs), where the dynamic covalent bonds (DCBs) can reversibly break and reform under defined conditions, present superior dynamic characteristics, such as self-adaptivity, self-healing and shape memory. However, the dynamic characteristics of DCBs are mainly limited within the length scale of covalent bonds, due to the local position exchange or the inter-distance variation between the chemical compositions involved in the reversible covalent reactions. In this minireview, a discussion regarding the realization of long-range migration of chemical compositions along the interfaces of graphene oxide (GO)-based materials via the spatially connected and consecutive occurrence of DCB-based reversible covalent reactions is presented, and the interfaces are termed "large-area dynamic covalent interfaces (LDCIs)". The effective strategies, including water adsorption, interfacial curvature and metal-substrate support, as well as the potential applications of LDCIs in water dissociation and humidity sensing are summarized. Additionally, we also give an outlook on potential strategies to realize LDCIs on other 2D carbon-based materials, including the interfacial morphology and periodic element doping. This minireview provides insights into the realization of LDCIs on a wider range of 2D materials, and offers a theoretical perspective for advancing materials with long-range dynamic characteristics and improved performance, including controlled drug delivery/release and high-efficiency (bio)sensing.
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Affiliation(s)
- Boyi Situ
- College of Physics Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Jiangsu 225009, China.
| | - Zhe Zhang
- College of Physics Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Jiangsu 225009, China.
| | - Liang Zhao
- College of Physics Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Jiangsu 225009, China.
| | - Yusong Tu
- College of Physics Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Jiangsu 225009, China.
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59
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Pal A, Das KM, Sau S, Thakur A. Co(II) Acetate-Assisted Direct Synthesis of Acyl Hydrazones from Acyl Hydrazides under Mild Conditions. Chem Asian J 2023; 18:e202300755. [PMID: 37814533 DOI: 10.1002/asia.202300755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/04/2023] [Accepted: 10/09/2023] [Indexed: 10/11/2023]
Abstract
Acyl hydrazones are a class of synthetically important organic compounds that are recurrently in high demand for synthesis and use in various fields of chemistry and biology. We report the first Co(II) catalyzed one-component one-pot sustainable synthesis of acyl hydrazones only from acyl hydrazides under mild reaction conditions. Traditional and contemporary methodologies use two components (usually acyl hydrazides and aldehydes/ketones/alcohols/styrene) as the coupling partners. Our protocol, on the other hand, involves the in situ generation of aldehyde intermediate (detected by gas chromatography) from the acyl hydrazide, which then undergoes condensation with another molecule of the same acyl hydrazide in the same pot to yield acyl hydrazones in presence of mild base K2 CO3 and low-cost Co(OAc)2 ⋅ 4H2 O as catalyst. This method shows good functional group tolerance with good to excellent yield of products. Furthermore, some of the resulting acyl hydrazones have been used as synthetic precursors and explored in various post-synthetic modifications to afford N-heterocyclic compounds. Furthermore, photoswitchable properties of few synthesized acyl hydrazones are also explored using their E/Z isomerization around the C=N bond, as realized by high-pressure liquid chromatography (HPLC) and UV-vis spectroscopic studies.
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Affiliation(s)
- Adwitiya Pal
- Department of Chemistry, Jadavpur University, Kolkata, 700032, West Bengal, India
| | - Krishna Mohan Das
- Department of Chemistry, Jadavpur University, Kolkata, 700032, West Bengal, India
| | - Subham Sau
- Department of Chemistry, Jadavpur University, Kolkata, 700032, West Bengal, India
| | - Arunabha Thakur
- Department of Chemistry, Jadavpur University, Kolkata, 700032, West Bengal, India
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60
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Ge S, Tsao YH, Evans CM. Polymer architecture dictates multiple relaxation processes in soft networks with two orthogonal dynamic bonds. Nat Commun 2023; 14:7244. [PMID: 37945556 PMCID: PMC10636115 DOI: 10.1038/s41467-023-43073-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023] Open
Abstract
Materials with tunable modulus, viscosity, and complex viscoelastic spectra are crucial in applications such as self-healing, additive manufacturing, and energy damping. It is still challenging to predictively design polymer networks with hierarchical relaxation processes, as many competing factors affect dynamics. Here, networks with both pendant and telechelic architecture are synthesized with mixed orthogonal dynamic bonds to understand how the network connectivity and bond exchange mechanisms govern the overall relaxation spectrum. A hydrogen-bonding group and a vitrimeric dynamic crosslinker are combined into the same network, and multimodal relaxation is observed in both pendant and telechelic networks. This is in stark contrast to similar networks where two dynamic bonds share the same exchange mechanism. With the incorporation of orthogonal dynamic bonds, the mixed network also demonstrates excellent damping and improved mechanical properties. In addition, two relaxation processes arise when only hydrogen-bond exchange is present, and both modes are retained in the mixed dynamic networks. This work provides molecular insights for the predictive design of hierarchical dynamics in soft materials.
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Affiliation(s)
- Sirui Ge
- Department of Materials Science and Engineering, University of Illinois Urbana Champaign, Champaign, IL, USA
- Materials Research Laboratory, University of Illinois Urbana Champaign, Champaign, IL, USA
| | - Yu-Hsuan Tsao
- Department of Materials Science and Engineering, University of Illinois Urbana Champaign, Champaign, IL, USA
- Materials Research Laboratory, University of Illinois Urbana Champaign, Champaign, IL, USA
| | - Christopher M Evans
- Department of Materials Science and Engineering, University of Illinois Urbana Champaign, Champaign, IL, USA.
- Materials Research Laboratory, University of Illinois Urbana Champaign, Champaign, IL, USA.
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana Champaign, Champaign, IL, USA.
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61
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Singh RK, Yadav D, Misra S, Singh AK. Role of ancillary ligands in selectivity towards acceptorless dehydrogenation versus dehydrogenative coupling of alcohols and amines catalyzed by cationic ruthenium(II)-CNC pincer complexes. Dalton Trans 2023; 52:15878-15895. [PMID: 37830304 DOI: 10.1039/d3dt03149g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
An unexpected reversal in catalytic activity for acceptorless dehydrogenative coupling compared to acceptorless alcohol dehydrogenation has been observed using a series of cationic Ru(II)-CNC pincer complexes with different ancillary ligands. In continuation of our study of cationic Ru(II)-CNC pincer complexes 1a-6a, new complexes with bulky N-wingtips [Ru(CNCiPr)(CO)(PPh3)Br]PF6 (1b), [Ru(CNCCy)(CO)(PPh3)Cl]PF6 (1c), [Ru(CNCCy)(CO)(PPh3)H]PF6 (2c), [Ru(CNCiPr)(PPh3)2Cl]PF6 (3b), [Ru(CNCCy)(PPh3)2Cl]PF6 (3c), [Ru(CNCiPr)(PPh3)2H]PF6 (4b), [Ru(CNCCy)(PPh3)2H]PF6 (4c), [Ru(CNCiPr)(DMSO)2Cl]PF6 (6b), and [Ru(CNCCy)(DMSO)2Cl]PF6 (6c) [CNCR = 2,6-bis(1-alkylimidazol-2-ylidene)-pyridine] have been synthesized and the catalytic activities of the new complexes have been compared with their N-methyl analogues for transfer hydrogenation of cyclohexanone and acceptorless dehydrogenation of benzyl alcohol. Furthermore, all complexes have been utilized as catalysts in the dehydrogenative coupling reaction of benzyl alcohol with amines. While the catalytic activities of the new complexes for transfer hydrogenation and acceptorless alcohol dehydrogenation were found to be in line with the previously observed trend based on the ancillary ligands (CO > COD > DMSO > PPh3), for the acceptorless dehydrogenative coupling reaction, complexes containing PPh3 and DMSO ligands performed better compared to complexes containing CO and COD ligands. Based on NMR and mass investigation of catalytic reactions, a plausible mechanism has been suggested to explain the difference in catalytic activity and its reversal during the dehydrogenative coupling reaction. Furthermore, the substrate scope for the dehydrogenative coupling reaction of benzyl alcohol with a wide range of amines has been explored, including synthesizing some pharmaceutically important imines. All new complexes have been characterized by various spectroscopic techniques, and the structures of 4b and 6b have been confirmed by the single-crystal X-ray diffraction technique.
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Affiliation(s)
- Rahul Kumar Singh
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India.
| | - Dibya Yadav
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India.
| | - Shilpi Misra
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India.
- Centre for Scientific and Applied Research, IPS Academy, Indore 452012, India
| | - Amrendra K Singh
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India.
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62
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van Dam A, van Schendel R, Gangarapu S, Zuilhof H, Smulders MMJ. DFT Study of Imine-Exchange Reactions in Iron(II)-Coordinated Pincers. Chemistry 2023; 29:e202301795. [PMID: 37560922 DOI: 10.1002/chem.202301795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 08/11/2023]
Abstract
The imine bond is among the most applied motifs in dynamic covalent chemistry. Although its uses are varied and often involve coordination to a transition metal for stability, mechanistic studies on imine exchange reactions so far have not included metal coordination. Herein, we investigated the condensation and transimination reactions of an Fe2+ -coordinated diimine pyridine pincer, employing wB97XD/6-311G(2d,2p) DFT calculations in acetonitrile. We first experimentally confirmed that Fe2+ is strongly coordinated by these pincers, and is thus a justified model ion. When considering a four-membered ring-shaped transition state for proton transfers, the required activation energies for condensation and transimination reaction exceeded the values expected for reactions known to be spontaneous at room temperature. The nature of the incoming and exiting amines and the substituents on the para-position of the pincer had no effect on this. Replacing Fe2+ with Zn2+ or removing it altogether did not reduce it either. However, the addition of two ethylamine molecules lowered the energy barriers to be compatible with experiment (19.4 and 23.2 kcal/mol for condensation and transimination, respectively). Lastly, the energy barrier of condensation of a non-coordinated pincer was significantly higher than found for Fe2+ -coordinating pincers, underlining the catalyzing effect of metal coordination on imine exchange reactions.
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Affiliation(s)
- Annemieke van Dam
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Robin van Schendel
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Satesh Gangarapu
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
- School of Pharmaceutical Sciences and Technology, Tianjin University, 92 Weijin Road, Tianjin, 300072, P.R. China
| | - Maarten M J Smulders
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
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63
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Atwal A, Dale TP, Snow M, Forsyth NR, Davoodi P. Injectable hydrogels: An emerging therapeutic strategy for cartilage regeneration. Adv Colloid Interface Sci 2023; 321:103030. [PMID: 37907031 DOI: 10.1016/j.cis.2023.103030] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 11/02/2023]
Abstract
The impairment of articular cartilage due to traumatic incidents or osteoarthritis has posed significant challenges for healthcare practitioners, researchers, and individuals suffering from these conditions. Due to the absence of an approved treatment strategy for the complete restoration of cartilage defects to their native state, the tissue condition often deteriorates over time, leading to osteoarthritic (OA). However, recent advancements in the field of regenerative medicine have unveiled promising prospects through the utilization of injectable hydrogels. This versatile class of biomaterials, characterized by their ability to emulate the characteristics of native articular cartilage, offers the distinct advantage of minimally invasive administration directly to the site of damage. These hydrogels can also serve as ideal delivery vehicles for a diverse range of bioactive agents, including growth factors, anti-inflammatory drugs, steroids, and cells. The controlled release of such biologically active molecules from hydrogel scaffolds can accelerate cartilage healing, stimulate chondrogenesis, and modulate the inflammatory microenvironment to halt osteoarthritic progression. The present review aims to describe the methods used to design injectable hydrogels, expound upon their applications as delivery vehicles of biologically active molecules, and provide an update on recent advances in leveraging these delivery systems to foster articular cartilage regeneration.
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Affiliation(s)
- Arjan Atwal
- School of Pharmacy and Bioengineering, Hornbeam building, Keele University, Staffordshire ST5 5BG, United Kingdom; Guy Hilton Research Centre, School of Pharmacy and Bioengineering, Keele University, Staffordshire ST4 7QB, United Kingdom
| | - Tina P Dale
- School of Pharmacy and Bioengineering, Hornbeam building, Keele University, Staffordshire ST5 5BG, United Kingdom; Guy Hilton Research Centre, School of Pharmacy and Bioengineering, Keele University, Staffordshire ST4 7QB, United Kingdom
| | - Martyn Snow
- Department of Arthroscopy, Royal Orthopaedic Hospital NHS Foundation Trust, Birmingham B31 2AP, United Kingdom; The Robert Jones and Agnes Hunt Hospital, Oswestry, Shropshire SY10 7AG, United Kingdom
| | - Nicholas R Forsyth
- School of Pharmacy and Bioengineering, Hornbeam building, Keele University, Staffordshire ST5 5BG, United Kingdom; Guy Hilton Research Centre, School of Pharmacy and Bioengineering, Keele University, Staffordshire ST4 7QB, United Kingdom; Vice Principals' Office, University of Aberdeen, Kings College, Aberdeen AB24 3FX, United Kingdom
| | - Pooya Davoodi
- School of Pharmacy and Bioengineering, Hornbeam building, Keele University, Staffordshire ST5 5BG, United Kingdom; Guy Hilton Research Centre, School of Pharmacy and Bioengineering, Keele University, Staffordshire ST4 7QB, United Kingdom.
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64
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Mao Y, Davis S, Pu L. Regio- and Enantioselective Macrocyclization from Dynamic Imine Formation: Chemo- and Enantioselective Fluorescent Recognition of Lysine. Org Lett 2023; 25:7639-7644. [PMID: 37843813 DOI: 10.1021/acs.orglett.3c02949] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
The dynamic covalent chemistry of imines is utilized to conduct a regioselective as well as enantioselective synthesis of an unsymmetric (C1) chiral macrocycle from the reaction of an unsymmetric (C1) chiral dialdehyde, (S)-4, that contains a salicylaldehyde unit and a benzaldehyde unit, with lysine, an unsymmetric (C1) chiral diamine. The enantioselectivity is further enhanced in the presence of Zn2+. Compound (S)-4 in combination with Zn2+ is found to be a highly chemoselective as well as enantioselective fluorescent probe for lysine. It can be used to detect specific enantiomers of this amino acid.
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Affiliation(s)
- Yifan Mao
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Stephanie Davis
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Lin Pu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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65
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Yadav R, Ghiviriga I, Abboud KK, Veige AS. A case of alkylidyne-imine metathesis. Chem Commun (Camb) 2023; 59:12899-12902. [PMID: 37819671 DOI: 10.1039/d3cc04583h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Reactions between imines and tungsten alkylidyne complexes are studied. The trianionic pincer ligand supported alkylidyne [tBuOCO]WCC(CH3)3(THF)2 (1) reacts with N-(R)-1-phenylmethanimine (PMI-R, R = Me, Ph, Bn, and TMS) yielding [tBuOC(H)O]W(η2-tBuCCPh)N(R) (4-R), products from metathesis reaction. In contrast, the non-pincer alkylidyne (tBuO)3WCC(CH3)3 does not react with PMI-R imines.
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Affiliation(s)
- Rinku Yadav
- Department of Chemistry, Center for Catalysis, University of Florida, Gainesville, Florida, 32611, USA.
| | - Ion Ghiviriga
- Department of Chemistry, Center for Catalysis, University of Florida, Gainesville, Florida, 32611, USA.
| | - Khalil K Abboud
- Department of Chemistry, Center for Catalysis, University of Florida, Gainesville, Florida, 32611, USA.
| | - Adam S Veige
- Department of Chemistry, Center for Catalysis, University of Florida, Gainesville, Florida, 32611, USA.
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66
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Princen K, Marien N, Guedens W, Graulus GJ, Adriaensens P. Hydrogels with Reversible Crosslinks for Improved Localised Stem Cell Retention: A Review. Chembiochem 2023; 24:e202300149. [PMID: 37220343 DOI: 10.1002/cbic.202300149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/21/2023] [Accepted: 05/23/2023] [Indexed: 05/25/2023]
Abstract
Successful stem cell applications could have a significant impact on the medical field, where many lives are at stake. However, the translation of stem cells to the clinic could be improved by overcoming challenges in stem cell transplantation and in vivo retention at the site of tissue damage. This review aims to showcase the most recent insights into developing hydrogels that can deliver, retain, and accommodate stem cells for tissue repair. Hydrogels can be used for tissue engineering, as their flexibility and water content makes them excellent substitutes for the native extracellular matrix. Moreover, the mechanical properties of hydrogels are highly tuneable, and recognition moieties to control cell behaviour and fate can quickly be introduced. This review covers the parameters necessary for the physicochemical design of adaptable hydrogels, the variety of (bio)materials that can be used in such hydrogels, their application in stem cell delivery and some recently developed chemistries for reversible crosslinking. Implementing physical and dynamic covalent chemistry has resulted in adaptable hydrogels that can mimic the dynamic nature of the extracellular matrix.
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Affiliation(s)
- Ken Princen
- Biomolecule Design Group, Institute for Materials Research (IMO-IMOMEC), Hasselt University, Agoralaan-Building D, 3590, Diepenbeek, Belgium
| | - Neeve Marien
- Biomolecule Design Group, Institute for Materials Research (IMO-IMOMEC), Hasselt University, Agoralaan-Building D, 3590, Diepenbeek, Belgium
| | - Wanda Guedens
- Biomolecule Design Group, Institute for Materials Research (IMO-IMOMEC), Hasselt University, Agoralaan-Building D, 3590, Diepenbeek, Belgium
| | - Geert-Jan Graulus
- Biomolecule Design Group, Institute for Materials Research (IMO-IMOMEC), Hasselt University, Agoralaan-Building D, 3590, Diepenbeek, Belgium
| | - Peter Adriaensens
- Biomolecule Design Group, Institute for Materials Research (IMO-IMOMEC), Hasselt University, Agoralaan-Building D, 3590, Diepenbeek, Belgium
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67
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Zhang X, Hu S, Huang L, Chen X, Wang X, Fu YN, Sun H, Li G, Wang X. Advance Progress in Assembly Mechanisms of Carrier-Free Nanodrugs for Cancer Treatment. Molecules 2023; 28:7065. [PMID: 37894544 PMCID: PMC10608994 DOI: 10.3390/molecules28207065] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/29/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Nanocarriers have been widely studied and applied in the field of cancer treatment. However, conventional nanocarriers still suffer from complicated preparation processes, low drug loading, and potential toxicity of carriers themselves. To tackle the hindrance, carrier-free nanodrugs with biological activity have received increasing attention in cancer therapy. Extensive efforts have been made to exploit new self-assembly methods and mechanisms to expand the scope of carrier-free nanodrugs with enhanced therapeutic performance. In this review, we summarize the advanced progress and applications of carrier-free nanodrugs based on different types of assembly mechanisms and strategies, which involved noncovalent interactions, a combination of covalent bonds and noncovalent interactions, and metal ions-coordinated self-assembly. These carrier-free nanodrugs are introduced in detail according to their assembly and antitumor applications. Finally, the prospects and existing challenges of carrier-free nanodrugs in future development and clinical application are discussed. We hope that this comprehensive review will provide new insights into the rational design of more effective carrier-free nanodrug systems and advancing clinical cancer and other diseases (e.g., bacterial infections) infection treatment.
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Affiliation(s)
- Xiaoyu Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shuyang Hu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lifei Huang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiyue Chen
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xin Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ya-nan Fu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hui Sun
- Department of Hepatology, Tongliao Infectious Disease Hospital, Tongliao 028000, China
- Department of Interventional Ultrasound, PLA Medical College & Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China
| | - Guofeng Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xing Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
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Li J, Cui Z, Fan C, Zhou Y, Ren M, Zhou C. Photo-caged 2-butene-1,4-dial as an efficient, target-specific photo-crosslinker for covalent trapping of DNA-binding proteins. Chem Sci 2023; 14:10884-10891. [PMID: 37829010 PMCID: PMC10566456 DOI: 10.1039/d3sc03719c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/12/2023] [Indexed: 10/14/2023] Open
Abstract
Covalent trapping of DNA-binding proteins via photo-crosslinking is an advantageous method for studying DNA-protein interactions. However, traditional photo-crosslinkers generate highly reactive intermediates that rapidly and non-selectively react with nearby functional groups, resulting in low target-capture yields and high non-target background capture. Herein, we report that photo-caged 2-butene-1,4-dial (PBDA) is an efficient photo-crosslinker for trapping DNA-binding proteins. Photo-irradiation (360 nm) of PBDA-modified DNA generates 2-butene-1,4-dial (BDA), a small, long-lived intermediate that reacts selectively with Lys residues of DNA-binding proteins, leading in minutes to stable DNA-protein crosslinks in up to 70% yield. In addition, BDA exhibits high specificity for target proteins, leading to low non-target background capture. The high photo-crosslinking yield and target specificity make PBDA a powerful tool for studying DNA-protein interactions.
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Affiliation(s)
- Jiahui Li
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Department of Chemical Biology, College of Chemistry, Nankai University Tianjin 300071 China
| | - Zenghui Cui
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Department of Chemical Biology, College of Chemistry, Nankai University Tianjin 300071 China
| | - Chaochao Fan
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Department of Chemical Biology, College of Chemistry, Nankai University Tianjin 300071 China
| | - Yifei Zhou
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Department of Chemical Biology, College of Chemistry, Nankai University Tianjin 300071 China
| | - Mengtian Ren
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Department of Chemical Biology, College of Chemistry, Nankai University Tianjin 300071 China
| | - Chuanzheng Zhou
- State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Department of Chemical Biology, College of Chemistry, Nankai University Tianjin 300071 China
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69
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Rehman HU, Hedenqvist MS, Chen Y, Guo Y, Li H, Liu H. Stretchable, Strong, Recyclable Helicide Elastomer Based on Dynamic Covalent Interactions. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46280-46291. [PMID: 37729208 DOI: 10.1021/acsami.3c08329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Current methods for making and disposing synthetic polymers have been widely pursued and are largely unsustainable. As a part of the solution, the reversible nature of dynamic covalent bonds emerges as an extraordinarily diverse and valuable feature in the development of exotic molecules and extended structures. With these bonds, it should be possible to construct recyclable and mechanically interlocked molecular structures using relatively simple precursors with preorganized geometries. A new helicide-based elastomer network is developed here with self-healing, recycling, and degradation features using a similar concept. The best self-healing performance (100%) was noted over 10-20 min, with various H2O, HCl, and NaOH solutions that delivered mechanical properties in the 1-1.4 MPa range. For hydrolytic degradation, the parameters are defined based on the type of binding, the pH of the solutions, and the copolymer network, which endowed a degradation time of approximately 4-11 h for each prepared sample. However, due to the reversible nature of the dynamic bonds, the material showed good recyclable mechanical properties compared to the pristine samples after five consecutive cycles, which meet the requirements of recyclable materials and recyclable packaging.
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Affiliation(s)
- Hafeez Ur Rehman
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- Department of Physics, The University of Lahore, 1-KM Defense Road, Lahore 54000, Pakistan
| | - Mikael S Hedenqvist
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Yujie Chen
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yutong Guo
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Hua Li
- Collaborative Innovation Centre for Advanced Ship and Dee-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Hezhou Liu
- Collaborative Innovation Centre for Advanced Ship and Dee-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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70
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Wu W, Yang H, Liu J, Luo Y, Mo G, Hu Z, Zhang L, Huang K. Thermally Reversible Cross-Linking of Recyclable Polyamide Materials Based on Schiff Base and Diels-Alder Reactions. Macromol Rapid Commun 2023; 44:e2300252. [PMID: 37483090 DOI: 10.1002/marc.202300252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/25/2023] [Accepted: 07/01/2023] [Indexed: 07/25/2023]
Abstract
Recyclability of cross-link polymer materials is essential to alleviate environmental pollution caused by discarded or damaged polymers. Herein, a facile method for producing recyclable polyamide materials is developed. Linear polymer chains are constructed by Schiff base reaction between glutaraldehyde (GD) and furandiamine (FD). The linear polymer chains are crosslinked by bismaleimide (BM) to give rise to polyamide material, named GF-BMs. The resulting GF-BMs polyamide material possesses strong tensile strength (78 MPa) and good solvent resistance from room temperature to 135 °C. Especially, the thermally reversible Diels-Alder covalent bonds and dynamic imine bonds in the polymer network have a synergistic effect on fast-reprocessing, self-healing, and recyclability, which provides a new idea for recyclable materials.
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Affiliation(s)
- Wenjin Wu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 N, Dongchuan Road, Shanghai, 200241, China
| | - Han Yang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 N, Dongchuan Road, Shanghai, 200241, China
| | - Jiakang Liu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 N, Dongchuan Road, Shanghai, 200241, China
| | - Yiqian Luo
- School of Chemistry and Molecular Engineering, East China Normal University, 500 N, Dongchuan Road, Shanghai, 200241, China
| | - Guanhuan Mo
- School of Chemistry and Molecular Engineering, East China Normal University, 500 N, Dongchuan Road, Shanghai, 200241, China
| | - Zhigao Hu
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai), Engineering Research Center of Nanophotonics Advanced Instrument (Ministry of Education), Department of Materials, School of Physics and Electronic Science, East China Normal University, Shanghai, 200241, China
| | - Lidong Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 N, Dongchuan Road, Shanghai, 200241, China
| | - Kun Huang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 N, Dongchuan Road, Shanghai, 200241, China
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71
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Zhong B, Chen F, Ge Y, Liu D. Developing a fast and catalyst-free protocol to form C=N double bond with high functional group tolerance. ROYAL SOCIETY OPEN SCIENCE 2023; 10:231263. [PMID: 37800155 PMCID: PMC10548102 DOI: 10.1098/rsos.231263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 09/12/2023] [Indexed: 10/07/2023]
Abstract
The carbon-nitrogen double bond (C=N) is a fundamentally important functional group in organic chemistry. This is largely due to the fact that C=N acts as electrophilic synthon to give nitrogen-containing compounds. Here, we report the condensation of primary amine or hydrazine with very electron-deficient aldehyde to form C=N bond in the absence of any catalysts (metals and acids). The protocol performs at room temperature and applies water as co-solvent. Two hundred examples are presented here. With its intrinsic advantages of wide substrate scopes, excellent efficiency (high yields and short reaction time), operational simplicity, mild condition (room temperature as reaction temperature, no catalysts, no additions, water as co-solvent and opening to air) and available starting materials, the protocol can be compatible with various drugs, prodrugs, dyes and pharmacophores containing primary amino group. In addition, we also successfully apply this protocol to rapidly synthesize the core scaffolds of bioactive molecules.
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Affiliation(s)
- Bin Zhong
- Heifei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, People's Republic of China
| | - Feng Chen
- Heifei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, People's Republic of China
| | - Yushu Ge
- Heifei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, People's Republic of China
| | - Dan Liu
- Heifei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, People's Republic of China
- The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui 230001, People's Republic of China
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72
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Sun J, He H, Zhao K, Cheng W, Li Y, Zhang P, Wan S, Liu Y, Wang M, Li M, Wei Z, Li B, Zhang Y, Li C, Sun Y, Shen J, Li J, Wang F, Ma C, Tian Y, Su J, Chen D, Fan C, Zhang H, Liu K. Protein fibers with self-recoverable mechanical properties via dynamic imine chemistry. Nat Commun 2023; 14:5348. [PMID: 37660126 PMCID: PMC10475138 DOI: 10.1038/s41467-023-41084-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/23/2023] [Indexed: 09/04/2023] Open
Abstract
The manipulation of internal interactions at the molecular level within biological fibers is of particular importance but challenging, severely limiting their tunability in macroscopic performances and applications. It thus becomes imperative to explore new approaches to enhance biological fibers' stability and environmental tolerance and to impart them with diverse functionalities, such as mechanical recoverability and stimulus-triggered responses. Herein, we develop a dynamic imine fiber chemistry (DIFC) approach to engineer molecular interactions to fabricate strong and tough protein fibers with recoverability and actuating behaviors. The resulting DIF fibers exhibit extraordinary mechanical performances, outperforming many recombinant silks and synthetic polymer fibers. Remarkably, impaired DIF fibers caused by fatigue or strong acid treatment are quickly recovered in water directed by the DIFC strategy. Reproducible mechanical performance is thus observed. The DIF fibers also exhibit exotic mechanical stability at extreme temperatures (e.g., -196 °C and 150 °C). When triggered by humidity, the DIFC endows the protein fibers with diverse actuation behaviors, such as self-folding, self-stretching, and self-contracting. Therefore, the established DIFC represents an alternative strategy to strengthen biological fibers and may pave the way for their high-tech applications.
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Affiliation(s)
- Jing Sun
- School of Chemistry and Molecular Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai, 200241, China
| | - Haonan He
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Kelu Zhao
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Wenhao Cheng
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Yuanxin Li
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Peng Zhang
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Sikang Wan
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
| | - Yawei Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Mengyao Wang
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Ming Li
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Zheng Wei
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Bo Li
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
| | - Yi Zhang
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Cong Li
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yao Sun
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
| | - Jianlei Shen
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jingjing Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Fan Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Chao Ma
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
| | - Yang Tian
- School of Chemistry and Molecular Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai, 200241, China
| | - Juanjuan Su
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Dong Chen
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Chunhai Fan
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, and Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hongjie Zhang
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Kai Liu
- Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Department of Chemistry, Tsinghua University, 100084, Beijing, China.
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.
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73
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Stefaniu C, Wölk C, Latza VM, Chumakov A, Brezesinski G, Schneck E. Cross-linking reactions in Langmuir monolayers of specially designed aminolipids - a toolbox for the customized production of amphiphilic nanosheets. NANOSCALE ADVANCES 2023; 5:4589-4597. [PMID: 37638167 PMCID: PMC10448339 DOI: 10.1039/d3na00244f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 08/09/2023] [Indexed: 08/29/2023]
Abstract
Synthetic amino lipids, already known as highly efficient gene therapy tool, are used in a novel way to create cross-linked stable one-molecule-thin films envisioned for future (bio)-materials applications. The films are prepared as Langmuir monolayers at the air/water interface and cross-linked 'in situ' via dynamic imine chemistry. The cross-linking process and the film characteristics are monitored by various surface-sensitive techniques such as grazing incidence X-ray diffraction, X-ray reflectivity, and infrared reflection-absorption spectroscopy. After transfer onto carbon grids, the cross-linked films are investigated by transmission and scanning electron microscopy. The obtained micrographs display mechanically self-supported nanosheets with area dimensions over several micrometers and, thus, an undeniable visual proof of successful cross-linking. The cross-linking process at the air/water interface allows to obtain Janus-faced sheets with a hydrophobic side characterized by aliphatic alkyl chains and a hydrophilic side characterized by nucleophilic groups like amines, hydroxyl groups and imine.
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Affiliation(s)
- Cristina Stefaniu
- Departments of Biomaterials and Biomolecular Systems, Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Christian Wölk
- Pharmaceutical Technology, Faculty of Medicine, University of Leipzig Eilenburger Str. 15a 04317 Leipzig Germany
| | - Victoria M Latza
- Departments of Biomaterials and Biomolecular Systems, Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Andrei Chumakov
- European Synchrotron Radiation Facility 71, avenue des Martyrs, CS 40220 38043 Grenoble Cedex 9 France
| | - Gerald Brezesinski
- Departments of Biomaterials and Biomolecular Systems, Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
- Department of Physics, TU Darmstadt Hochschulstr. 8 64289 Darmstadt Germany
| | - Emanuel Schneck
- Departments of Biomaterials and Biomolecular Systems, Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
- Department of Physics, TU Darmstadt Hochschulstr. 8 64289 Darmstadt Germany
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74
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Grosjean M, Berne D, Caillol S, Ladmiral V, Nottelet B. Dynamic PEG-PLA/Hydroxyurethane Networks Based on Imine Bonds as Reprocessable Elastomeric Biomaterials. Biomacromolecules 2023; 24:3472-3483. [PMID: 37458381 DOI: 10.1021/acs.biomac.3c00229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
The development of dynamic covalent chemistry opens the way to the design of materials able to be reprocessed by an internal exchange reaction under thermal stimulus. Imine exchange differs from other exchange reactions by its relatively low temperature of activation. In this study, amine-functionalized star-shaped PEG-PLA and an aldehyde-functionalized hydroxyurethane modifier were combined to produce PEG-PLA/hydroxyurethane networks incorporating imine bonds. The thermal and mechanical properties of these new materials were evaluated as a function of the initial ratio of amine/aldehyde used during synthesis. Rheological analyses highlighted the dynamic behavior of these vitrimers at moderate temperature (60-85 °C) and provided the flow activation energies. Additionally, the reprocessability of these PEG-PLA/hydroxyurethane vitrimers was assessed by comparing the material properties before reshaping and after three reprocessing cycles (1 ton, 1 h, 70 °C). Hence, these materials can easily be designed to satisfy a specific medical application without properties loss. This work opens the way to the development of a new generation of dynamic materials combining degradable PEG-PLA copolymers and hydroxyurethane modifiers, which could find applications in the shape of medical devices on-demand under mild conditions.
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Affiliation(s)
| | - Dimitri Berne
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34090, France
| | - Sylvain Caillol
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34090, France
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75
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Liyana Gunawardana VW, Ward C, Wang H, Holbrook JH, Sekera ER, Cui H, Hummon AB, Badjić JD. Crystalline Nanoparticles of Water-Soluble Covalent Basket Cages (CBCs) for Encapsulation of Anticancer Drugs. Angew Chem Int Ed Engl 2023; 62:e202306722. [PMID: 37332078 PMCID: PMC10528532 DOI: 10.1002/anie.202306722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/06/2023] [Accepted: 06/16/2023] [Indexed: 06/20/2023]
Abstract
We herein describe the preparation, assembly, recognition characteristics, and biocompatibility of novel covalent basket cage CBC-11, composed of four molecular baskets linked to four trivalent aromatic amines through amide groups. The cage is tetrahedral in shape and similar in size to small proteins (Mw =8637 g/mol) with a spacious nonpolar interior for accommodating multiple guests. While 24 carboxylates at the outer surface of CBC-11 render it soluble in aqueous phosphate buffer (PBS) at pH=7.0, the amphiphilic nature prompts its assembly into nanoparticles (d=250 nm, DLS). Cryo-TEM examination of nanoparticles revealed their crystalline nature with wafer-like shapes and hexagonally arranged cages. Nanoparticulate CBC-11 traps anticancer drugs irinotecan and doxorubicin, with each cage binding up to four drug molecules in a non-cooperative manner. The inclusion complexation resulted in nanoparticles growing in size and precipitating. In media containing mammalian cells (HCT 116, human colon carcinoma), the IC50 value of CBC-11 was above 100 μM. While this work presents the first example of a large covalent organic cage operating in water at the physiological pH and forming crystalline nanoparticles, it also demonstrates its biocompatibility and potential to act as a polyvalent binder of drugs for their sequestration or delivery.
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Affiliation(s)
| | - Carson Ward
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Han Wang
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Maryland Hall 221, 3400 North Charles Street, Baltimore, MD, USA
| | - Joseph H Holbrook
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Emily R Sekera
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Honggang Cui
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Maryland Hall 221, 3400 North Charles Street, Baltimore, MD, USA
| | - Amanda B Hummon
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Jovica D Badjić
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
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76
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Nowak K, Morawski O, Zinna F, Pescitelli G, Di Bari L, Górecki M, Grzybowski M. Strong Chiroptical Effects in the Absorption and Emission of Macrocycles Based on the 2,5-Diaminoterephthalate Minimal Fluorophore. Chemistry 2023; 29:e202300932. [PMID: 37194186 DOI: 10.1002/chem.202300932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/16/2023] [Accepted: 05/16/2023] [Indexed: 05/18/2023]
Abstract
Chiral fluorescent macrocycles consisting of two to four units of dimethyl 2,5-diaminoterephthalate can be readily synthesized in a one-pot manner from inexpensive building blocks. Depending on the concentration, either a paracyclophane-like dimer with closely stacked benzene rings or a triangular trimer is the main product of the reaction. The macrocycles exhibit fluorescence in solution as well as in the solid state with maxima that are red-shifted with decreasing size of the macrocyclic ring and are observed at wavelengths from 590 (tetramer in solution) to 700 nm (dimer in the solid state). Chirality dictates the differential absorption and emission of circularly polarized light by these molecules. The ECD and CPL effects are particularly strong for the trimer, which is characterized by relatively large dissymmetry factors gabs =±2.8×10-3 at 531 nm and glum =±2.3×10-3 at 580 nm in n-hexane, being at the same time highly luminescent (Φfl =13.7 %). Despite the small chromophore, the circularly polarized brightness BCPL of 2.3 dm3 mol-1 cm-1 is comparable to values reported for other classes of established CPL emitters in the visible region, such as expanded helicenes or larger π-conjugated systems.
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Affiliation(s)
- Krzysztof Nowak
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Olaf Morawski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668, Warsaw, Poland
| | - Francesco Zinna
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Gennaro Pescitelli
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Lorenzo Di Bari
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124, Pisa, Italy
| | - Marcin Górecki
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Marek Grzybowski
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
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77
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Zhao K, Xu G, Wang L, Wu T, Zhang X, Zhang C, Zhao Y, Li Z, Gao Y, Du F. Using a Dynamic Hydrophilization Strategy to Achieve Nanodispersion, Full Wetting, and Precise Delivery of Hydrophobic Pesticide. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37488063 DOI: 10.1021/acsami.3c07530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Various strategies have been developed to improve the applicability of hydrophobic pesticides for better effectiveness in agriculture. However, existing formulations of hydrophobic pesticides still suffer from complicated processing, abused organic solvents, indispensable surfactants, or inescapable ecotoxicity, which strictly limit their applications. Herein, a dynamic covalent bond tailored pesticide (fipronil) amphiphile is constructed to address the above issues, which accomplishes the nanodispersion, full wetting, and precise delivery without organic solvents, surfactants, and materials simultaneously. By introducing a hydrophilic ligand on the hydrophobic fipronil through an imine bond, the cleavable fipronil amphiphile (FPP) exhibits superior water solubility and can even self-assemble into micelles at higher concentrations, which can be directly applied in powder form without organic solvents. Attributed to the suitable hydrophilic/hydrophobic ratio, FPP achieves full wetting and effective deposition on superhydrophobic rice leaves without surfactants. Moreover, benefiting from the unique dynamic nature of the imine bond, FPP maintains good storage stability while sensitively releasing back to fipronil under the humidity and pH trigger, consequently implementing the precise delivery for nontarget Apis cerana and target Chilo suppressalis without materials. To our knowledge, this dynamic covalent bond tailored amphiphile strategy is the first idea that simultaneously takes the dispersibility, wettability, and responsiveness of hydrophobic pesticides into account, providing a possibility to control the entire journey of field application and even promising to be incorporated into the synthesis process, thus paving the way for modern sustainable agriculture.
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Affiliation(s)
- Kefei Zhao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Guangchun Xu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R. China
| | - Leng Wang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Tianyue Wu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Xingyu Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Chenhui Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Yuhang Zhao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Zilu Li
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Yuxia Gao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Fengpei Du
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
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78
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Lantos E, Mótyán G, Frank É, Eelkema R, van Esch J, Horváth D, Tóth Á. Dynamics of hydroxide-ion-driven reversible autocatalytic networks. RSC Adv 2023; 13:20243-20247. [PMID: 37416909 PMCID: PMC10321365 DOI: 10.1039/d3ra04215d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 06/28/2023] [Indexed: 07/08/2023] Open
Abstract
In living systems adaptive regulation requires the presence of nonlinear responses in the underlying chemical networks. Positive feedbacks, for example, can lead to autocatalytic bursts that provide switches between two stable states or to oscillatory dynamics. The stereostructure stabilized by hydrogen bonds provides an enzyme its selectivity, rendering pH regulation essential for its functioning. For effective control, triggers by small concentration changes play roles where the strength of feedback is important. Here we show that the interaction of acid-base equilibria with simple reactions with pH-dependent rate can lead to the emergence of a positive feedback in hydroxide ion concentration during the hydrolysis of some Schiff bases in the physiological pH range. The underlying reaction network can also support bistability in an open system.
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Affiliation(s)
- Emese Lantos
- Department of Physical Chemistry and Materials Science, University of Szeged Rerrich Béla tér 1 Szeged H-6720 Hungary
| | - Gergő Mótyán
- Department of Organic Chemistry, University of Szeged Dóm tér 8. Szeged H-6720 Hungary
| | - Éva Frank
- Department of Organic Chemistry, University of Szeged Dóm tér 8. Szeged H-6720 Hungary
| | - Rienk Eelkema
- Department of Chemical Engineering, Delft University of Technology Van der Maasweg 9 2629 HZ Delft Netherlands
| | - Jan van Esch
- Department of Chemical Engineering, Delft University of Technology Van der Maasweg 9 2629 HZ Delft Netherlands
| | - Dezső Horváth
- Department of Applied and Environmental Chemistry, University of Szeged Rerrich Béla tér 1 Szeged H-6720 Hungary
| | - Ágota Tóth
- Department of Physical Chemistry and Materials Science, University of Szeged Rerrich Béla tér 1 Szeged H-6720 Hungary
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79
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Zhou MH, Yin GZ, Prolongo SG, Wang DY. Recent Progress on Multifunctional Thermally Conductive Epoxy Composite. Polymers (Basel) 2023; 15:2818. [PMID: 37447467 DOI: 10.3390/polym15132818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
In last years, the requirements for materials and devices have increased exponentially. Greater competitiveness; cost and weight reduction for structural materials; greater power density for electronic devices; higher design versatility; materials customizing and tailoring; lower energy consumption during the manufacturing, transport, and use; among others, are some of the most common market demands. A higher operational efficiency together with long service life claimed. Particularly, high thermally conductive in epoxy resins is an important requirement for numerous applications, including energy and electrical and electronic industry. Over time, these materials have evolved from traditional single-function to multifunctional materials to satisfy the increasing demands of applications. Considering the complex application contexts, this review aims to provide insight into the present state of the art and future challenges of thermally conductive epoxy composites with various functionalities. Firstly, the basic theory of thermally conductive epoxy composites is summarized. Secondly, the review provides a comprehensive description of five types of multifunctional thermally conductive epoxy composites, including their fabrication methods and specific behavior. Furthermore, the key technical problems are proposed, and the major challenges to developing multifunctional thermally conductive epoxy composites are presented. Ultimately, the purpose of this review is to provide guidance and inspiration for the development of multifunctional thermally conductive epoxy composites to meet the increasing demands of the next generation of materials.
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Affiliation(s)
- Mei-Hui Zhou
- Materials Science and Engineering Area, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, C/ Tulipán s/n, Móstoles, 28933 Madrid, Spain
| | - Guang-Zhong Yin
- Escuela Politécnica Superior, Universidad Francisco de Vitoria, Ctra. Pozuelo-Majadahonda Km 1, 800, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Silvia González Prolongo
- Materials Science and Engineering Area, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, C/ Tulipán s/n, Móstoles, 28933 Madrid, Spain
| | - De-Yi Wang
- IMDEA Materials Institute, C/Eric Kandel 2, Getafe, 28906 Madrid, Spain
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80
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Laha JK, Gupta P, Hazra A. Sulfate radical anion-induced benzylic oxidation of N-(arylsulfonyl)benzylamines to N-arylsulfonylimines. Beilstein J Org Chem 2023; 19:771-777. [PMID: 37346499 PMCID: PMC10280053 DOI: 10.3762/bjoc.19.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/25/2023] [Indexed: 06/23/2023] Open
Abstract
A mild, operationally convenient, and practical method for the synthesis of synthetically useful N-arylsulfonylimines from N-(arylsulfonyl)benzylamines using K2S2O8 in the presence of pyridine as a base is reported herein. In addition, a "one-pot" tandem synthesis of pharmaceutically relevant N-heterocycles by the reaction of N-arylsulfonylimines, generated in situ with ortho-substituted anilines is also reported. The key features of the protocol include the use of a green oxidant, a short reaction time (30 min), chromatography-free isolation, scalability, and economical, delivering N-arylsulfonylimines in excellent yields of up to 96%. While the oxidation of N-aryl(benzyl)amines to N-arylimines using K2S2O8 is reported to be problematic, the oxidation of N-(arylsulfonyl)benzylamines to N-arylsulfonylimines using K2S2O8 has been achieved for the first time. The dual role of the sulfate radical anion (SO4·-), including hydrogen atom abstraction (HAT) and single electron transfer (SET), is proposed to be involved in the plausible reaction mechanism.
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Affiliation(s)
- Joydev K Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Pankaj Gupta
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Amitava Hazra
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
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81
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Marin L, Andreica BI, Anisiei A, Cibotaru S, Bardosova M, Materon EM, Oliveira ON. Quaternized chitosan (nano)fibers: A journey from preparation to high performance applications. Int J Biol Macromol 2023:125136. [PMID: 37270121 DOI: 10.1016/j.ijbiomac.2023.125136] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/09/2023] [Accepted: 05/26/2023] [Indexed: 06/05/2023]
Abstract
The industrial production of chitosan, initiated over 50 years ago, has transformed its application across diverse industries, agriculture, and medicine. To enhance its properties, numerous chitosan derivatives have been synthesized. The quaternization of chitosan has proven beneficial, as it not only enhances its properties but also imparts water solubility, expanding its potential for a wider range of applications. Specifically, the utilization of quaternized chitosan-based nanofibers has leveraged the synergistic benefits of quaternized chitosan (including hydrophilicity, bioadhesiveness, antimicrobial, antioxidant, hemostatic, and antiviral activities, as well as ionic conductivity) in combination with the distinctive characteristics of nanofibers (such as a high aspect ratio and 3D architecture). This combination has permitted numerous possibilities, spanning from wound dressings, air and water filters, drug delivery scaffolds, antimicrobial textiles, to energy storage systems and alkaline fuel cells. In this comprehensive review, we examine the preparation methods, properties, and applications of various composite fibers containing quaternized chitosan. The advantages and disadvantages of each method and composition are meticulously summarized, while relevant diagrams and figures illustrate the key findings.
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Affiliation(s)
- Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, Iasi, Romania.
| | - Bianca-Iustina Andreica
- "Petru Poni" Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, Iasi, Romania
| | - Alexandru Anisiei
- "Petru Poni" Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, Iasi, Romania
| | - Sandu Cibotaru
- "Petru Poni" Institute of Macromolecular Chemistry, Gr. Ghica Voda Alley, 41A, Iasi, Romania
| | - Maria Bardosova
- Slovak Academy of Science, Institute of Informatics, Bratislava, Slovakia
| | - Elsa M Materon
- Instituto de Física de São Carlos, Universidade de São Paulo, PO Box 369, 13560-970 São Carlos, Brazil
| | - Osvaldo N Oliveira
- Instituto de Física de São Carlos, Universidade de São Paulo, PO Box 369, 13560-970 São Carlos, Brazil
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82
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Wang C, Qiao Z, Tian Y, Yang H, Cao H, Cheetham AK. Alcohol imination catalyzed by carbon nanostructures synthesized by C(sp 2)-C(sp 3) free radical coupling. iScience 2023; 26:106659. [PMID: 37182103 PMCID: PMC10173739 DOI: 10.1016/j.isci.2023.106659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 01/13/2023] [Accepted: 04/07/2023] [Indexed: 05/16/2023] Open
Abstract
Imines are important intermediates for synthesizing various fine chemicals, with the disadvantage of requiring the use of expensive metal-containing catalysts. We report that the dehydrogenative cross-coupling of phenylmethanol and benzylamine (or aniline) directly forms the corresponding imine with a yield of up to 98%, and water as the sole by-product, in the presence of a stoichiometric base, using carbon nanostructures as the "green" metal-free carbon catalysts with high spin concentrations, which is synthesized by C(sp2)-C(sp3) free radical coupling reactions. The catalytic mechanism is attributed to the unpaired electrons of carbon catalysts to reduce O2 to O2·-, which triggers the oxidative coupling reaction to form imines, whereas the holes in the carbon catalysts receive electrons from the amine to restore the spin states. This is supported by density functional theory calculations. This work will open up an avenue for synthesizing carbon catalysts and offer great potential for industrial applications.
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Affiliation(s)
- Cheng Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zirui Qiao
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yulan Tian
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Haijun Yang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Huaqiang Cao
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Anthony K. Cheetham
- Materials Research Laboratory, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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83
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Rit T, Ghosh T, Bhowmik S, Patidar MK, Das AK. Dynamic Multicomponent Reactions-Directed Self-Assembled G-quadruplex Inherent Antibacterial Hydrogel. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6466-6475. [PMID: 37106320 DOI: 10.1021/acs.langmuir.3c00392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Nowadays, inherent antibacterial hydrogels have gained significant attention due to their utilization against infectious bacteria. Herein, we focus on the development of an injectable, self-healable, dynamic, and G-quadruplex hydrogel with inherent antibacterial activity. The dynamic self-assembled hydrogel is constructed upon multicomponent reactions (MCR) among guanosine, 2-formylphenylboronic acid, and amino acid/peptides in the presence of potassium ions. The role of amino acid/peptides in the formation of the G-quadruplex hydrogel is studied in detail. The G-quadruplex structure is formed via the π-π stacking of G-quartets. The formation of G-quadruplex is investigated by thioflavin T binding assay, CD spectroscopy, and PXRD. The formation of the dynamic imino-boronate bond in the hydrogels is well characterized by temperature-dependent 11B NMR (VT-NMR) and FT-IR spectroscopy. Furthermore, HR-TEM images and rheological experiments reveal the fibrillar networks and viscoelastic property of the hydrogels. The presence of the dynamic imino-boronate ester bonds makes the hydrogel injectable and self-healable in nature. These dynamic G-quadruplex hydrogels show potential antibacterial activity against a series of Gram-positive and Gram-negative bacteria. The hydrogels have been used for the entrapment and sustained release of an anticancer drug doxorubicin over 48 h at different pHs (4.8, 7.4, and 8.5) and temperature without the influence of any external stimuli. Such injectable and self-healable hydrogels could be used in various applications in the field of biomedical science.
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Affiliation(s)
- Tanmay Rit
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India
| | - Tapas Ghosh
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India
| | - Sourav Bhowmik
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India
| | - Mukesh K Patidar
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India
- Department of Biosciences, Maharaja Ranjit Singh College of Professional Sciences, Indore 452001, India
| | - Apurba K Das
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India
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84
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Li S, Niu D, Shi T, Yun W, Yan S, Xu G, Yin J. Injectable, In Situ Self-cross-linking, Self-healing Poly(l-glutamic acid)/Polyethylene Glycol Hydrogels for Cartilage Tissue Engineering. ACS Biomater Sci Eng 2023; 9:2625-2635. [PMID: 37068303 DOI: 10.1021/acsbiomaterials.3c00041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Injectable hydrogels have drawn much attention in the field of tissue engineering because of advantages such as simple operation, strong plasticity, and good biocompatibility and biodegradability. Herein, we propose the novel design of injectable hydrogels via a Schiff base cross-linking reaction between adipic dihydrazide (ADH)-modified poly(l-glutamic acid) (PLGA-ADH) and benzaldehyde-terminated poly(ethylene glycol) (PEG-CHO). The effects of the mass fraction and the molar ratio of -CHO/-NH2 on the gelation time, mechanical properties, equilibrium swelling, and in vitro degradation of the hydrogels were examined. The PLGA/PEG hydrogels cross-linked by dynamic Schiff base linkages exhibited good self-healing ability. Additionally, the PLGA/PEG hydrogels had good biocompatibility with bone marrow-derived mesenchymal stem cells (BMSCs) and could effectively support BMSC proliferation and deposition of glycosaminoglycans and upregulate the expression of cartilage-specific genes. In a rat cartilage defect model, PLGA/PEG hydrogels significantly promoted new cartilage formation. The results suggest the prospect of the PLGA/PEG hydrogels in cartilage tissue engineering.
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Affiliation(s)
- Shuang Li
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China
| | - Dongyang Niu
- Department of Orthopedic Surgery, Spine Center, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China
| | - Tuhe Shi
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China
| | - Wentao Yun
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China
| | - Shifeng Yan
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China
| | - Guohua Xu
- Department of Orthopedic Surgery, Spine Center, Changzheng Hospital, Second Military Medical University, Shanghai 200003, PR China
| | - Jingbo Yin
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China
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85
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Fang Q, Pang Z, Ai Q, Liu Y, Zhai T, Steinbach D, Gao G, Zhu Y, Li T, Lou J. Superior mechanical properties of multilayer covalent-organic frameworks enabled by rationally tuning molecular interlayer interactions. Proc Natl Acad Sci U S A 2023; 120:e2208676120. [PMID: 37014856 PMCID: PMC10104513 DOI: 10.1073/pnas.2208676120] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 03/06/2023] [Indexed: 04/05/2023] Open
Abstract
Two-dimensional (2D) covalent-organic frameworks (COFs) with a well-defined and tunable periodic porous skeleton are emerging candidates for lightweight and strong 2D polymeric materials. It remains challenging, however, to retain the superior mechanical properties of monolayer COFs in a multilayer stack. Here, we successfully demonstrated a precise layer control in synthesizing atomically thin COFs, enabling a systematic study of layer-dependent mechanical properties of 2D COFs with two different interlayer interactions. It was shown that the methoxy groups in COFTAPB-DMTP provided enhanced interlayer interactions, leading to layer-independent mechanical properties. In sharp contrast, mechanical properties of COFTAPB-PDA decreased significantly as the layer number increased. We attributed these results to higher energy barriers against interlayer sliding due to the presence of interlayer hydrogen bonds and possible mechanical interlocking in COFTAPB-DMTP, as revealed by density functional theory calculations.
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Affiliation(s)
- Qiyi Fang
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX77005
| | - Zhengqian Pang
- Department of Mechanical Engineering, University of Maryland College Park, College Park, MD20742
| | - Qing Ai
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX77005
| | - Yifeng Liu
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX77005
| | - Tianshu Zhai
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX77005
| | - Doug Steinbach
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX77005
| | - Guanhui Gao
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX77005
| | - Yifan Zhu
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX77005
| | - Teng Li
- Department of Mechanical Engineering, University of Maryland College Park, College Park, MD20742
| | - Jun Lou
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX77005
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86
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Wan X, Mu T, Yin G. Intrinsic Self-Healing Chemistry for Next-Generation Flexible Energy Storage Devices. NANO-MICRO LETTERS 2023; 15:99. [PMID: 37037957 PMCID: PMC10086096 DOI: 10.1007/s40820-023-01075-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 03/14/2023] [Indexed: 06/19/2023]
Abstract
The booming wearable/portable electronic devices industry has stimulated the progress of supporting flexible energy storage devices. Excellent performance of flexible devices not only requires the component units of each device to maintain the original performance under external forces, but also demands the overall device to be flexible in response to external fields. However, flexible energy storage devices inevitably occur mechanical damages (extrusion, impact, vibration)/electrical damages (overcharge, over-discharge, external short circuit) during long-term complex deformation conditions, causing serious performance degradation and safety risks. Inspired by the healing phenomenon of nature, endowing energy storage devices with self-healing capability has become a promising strategy to effectively improve the durability and functionality of devices. Herein, this review systematically summarizes the latest progress in intrinsic self-healing chemistry for energy storage devices. Firstly, the main intrinsic self-healing mechanism is introduced. Then, the research situation of electrodes, electrolytes, artificial interface layers and integrated devices based on intrinsic self-healing and advanced characterization technology is reviewed. Finally, the current challenges and perspective are provided. We believe this critical review will contribute to the development of intrinsic self-healing chemistry in the flexible energy storage field.
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Affiliation(s)
- Xin Wan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Tiansheng Mu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China.
| | - Geping Yin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, People's Republic of China.
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87
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An ZW, Xue R, Ye K, Zhao H, Liu Y, Li P, Chen ZM, Huang CX, Hu GH. Recent advances in self-healing polyurethane based on dynamic covalent bonds combined with other self-healing methods. NANOSCALE 2023; 15:6505-6520. [PMID: 36883369 DOI: 10.1039/d2nr07110j] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
To meet more application requirements, improving mechanical properties and self-healing efficiency has become the focus of current research on self-healing PU. The competitive relationship between self-healing ability and mechanical properties cannot be avoided by a single self-healing method. To address this problem, a growing number of studies have combined dynamic covalent bonding with other self-healing methods to construct the PU structure. This review summarizes recent studies on PU materials that combine typical dynamic covalent bonds with other self-healing methods. It mainly includes four parts: hydrogen bonding, metal coordination bonding, nanofillers combined with dynamic covalent bonding and multiple dynamic covalent bond bonding. The advantages and disadvantages of different self-healing methods and their significant role in improving self-healing ability and mechanical properties in PU networks are analyzed. At the same time, the possible challenges and research directions of self-healing PU materials in the future are discussed.
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Affiliation(s)
- Ze-Wei An
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Rui Xue
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Kang Ye
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Hui Zhao
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, College of Materials and Chemical Engineering, Hezhou University, Hezhou 542899, China
- National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China
- Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Yang Liu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Peng Li
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, College of Materials and Chemical Engineering, Hezhou University, Hezhou 542899, China
| | - Zhen-Ming Chen
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, College of Materials and Chemical Engineering, Hezhou University, Hezhou 542899, China
| | - Chong-Xing Huang
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, College of Materials and Chemical Engineering, Hezhou University, Hezhou 542899, China
| | - Guo-Hua Hu
- Laboratory of Reactions and Process Engineering, CNRS-University of Lorraine, Nancy 54001, France
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88
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Zheng Y, Wang Z, Chen P, Zhang W, Gao Q. Roughness-Dependent Electro-Reductive Coupling of Nitrobenzenes and Aldehydes on Copper Electrodes. CHEMSUSCHEM 2023:e202300180. [PMID: 36988187 DOI: 10.1002/cssc.202300180] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 05/28/2023]
Abstract
The electro-reductive coupling of nitro and carbonyl compounds enables a facile, environmentally friendly and energy benign transformation toward value-added nitrones or imines, but the selectivity is still challenging. Here, the surface roughness of Cu electrodes is introduced for the first time as the determinant to switch products from nitrones to imines owing to the controllable reduction of nitroarenes to hydroxylamines or amines on tailored CuI /Cu0 interfaces. The roughness-dependent selectivity, that is the decrease of nitrones and the increase of imines with enhanced roughness, is visible in the electro-reductive coupling of nitrobenzene and furfural. Thus, the high selectivity of nitrone (98 %) and imine (80 %) can be achieved on a surface smooth Cu foil and the one electrochemically roughened in the presence of I- , respectively. Such roughness-dependence of nitrone/imine selectivity on Cu electrodes is further verified in a wide substrate scope, highlighting the promise of surface/interfacial engineering for electrochemical synthesis.
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Affiliation(s)
- Yinjian Zheng
- College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, No. 601, Huangpu Avenue West, Guangzhou, 510632, P. R. China
| | - Zhiyuan Wang
- College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, No. 601, Huangpu Avenue West, Guangzhou, 510632, P. R. China
| | - Peng Chen
- College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, No. 601, Huangpu Avenue West, Guangzhou, 510632, P. R. China
| | - Wenbiao Zhang
- College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, No. 601, Huangpu Avenue West, Guangzhou, 510632, P. R. China
| | - Qingsheng Gao
- College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, No. 601, Huangpu Avenue West, Guangzhou, 510632, P. R. China
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89
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Zhu QH, Zhang GH, Zhang L, Wang SL, Fu J, Wang YH, Ma L, He L, Tao GH. Solvent-Responsive Reversible and Controllable Conversion between a Polyimine Membrane and an Organic Molecule Cage. J Am Chem Soc 2023; 145:6177-6183. [PMID: 36857470 DOI: 10.1021/jacs.2c12088] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Adaptive bionic self-correcting behavior offers an attractive property for chemical systems. Here, based on the dynamic feature of imine formation, we propose a solvent-responsive strategy for smart switching between an amorphous ionic polyimine membrane and a crystalline organic molecule cage without the addition of other building blocks. To adapt to solvent environmental constraints, the aldehyde and amine components undergo self-correction to form a polymer network or a molecular cage. Studies have shown that the amorphous film can be switched in acetonitrile to generate a discrete cage with bright birefringence under polarized light. Conversely, the membrane from the cage crystal conversion can be regained in ethanol. Such a membrane-cage interconversion can be cycled continuously at least 5 times by switching the two solvents. This work builds a bridge between the polymer network and crystalline molecules and offers prospects for smart dynamic materials.
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Affiliation(s)
- Qiu-Hong Zhu
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Guo-Hao Zhang
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lei Zhang
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | | | - Jie Fu
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yuan-Hao Wang
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lijian Ma
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ling He
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Guo-Hong Tao
- College of Chemistry, Sichuan University, Chengdu 610064, China
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90
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Yin C, Lu H, Ye H, Feng Z, Zou H, Zhang M, You L. Double n→π* Interactions with One Electron Donor: Structural and Mechanistic Insights. Org Lett 2023; 25:1470-1475. [PMID: 36856609 DOI: 10.1021/acs.orglett.3c00205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Double n→π* interactions between one common electron donor of the carbonyl oxygen and two individual acceptor aldehyde/imine units are presented. The structural and mechanistic insights were revealed through a collection of experimental and computational evidence. The orientation and further energetic dependence of orbital interactions were facilely regulated by the size of cyclic urea scaffolds, the bulkiness of aldehydes/imines, and the flexibility of imine macrocycles.
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Affiliation(s)
- Chaowei Yin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hanwei Lu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hebo Ye
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Zelin Feng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Hanxun Zou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Meilan Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Lei You
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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91
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Ovalle M, Kathan M, Toyoda R, Stindt CN, Crespi S, Feringa BL. Light-Fueled Transformations of a Dynamic Cage-Based Molecular System. Angew Chem Int Ed Engl 2023; 62:e202214495. [PMID: 36453623 DOI: 10.1002/anie.202214495] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
In a chemical equilibrium, the formation of high-energy species-in a closed system-is inefficient due to microscopic reversibility. Here, we demonstrate how this restriction can be circumvented by coupling a dynamic equilibrium to a light-induced E/Z isomerization of an azobenzene imine cage. The stable E-cage resists intermolecular imine exchange reactions that would "open" it. Upon switching, the strained Z-cage isomers undergo imine exchange spontaneously, thus opening the cage. Subsequent isomerization of the Z-open compounds yields a high-energy, kinetically trapped E-open species, which cannot be efficiently obtained from the initial E-cage, thus shifting an imine equilibrium energetically uphill in a closed system. Upon heating, the nucleophile is displaced back into solution and an opening/closing cycle is completed by regenerating the stable all-E-cage. Using this principle, a light-induced cage-to-cage transformation is performed by the addition of a ditopic aldehyde.
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Affiliation(s)
- Marco Ovalle
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands
| | - Michael Kathan
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands.,Present address: Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Ryojun Toyoda
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands.,Present address: Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aobaku, Sendai, 980-8578, Japan
| | - Charlotte N Stindt
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands
| | - Stefano Crespi
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands.,Present address: Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands
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92
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Ji RX, Shen JS. Modulating Dual Fluorescence Emissions in Imine-Based Probes to Distinguish D 2O and H 2O. J Phys Chem B 2023; 127:1229-1236. [PMID: 36696361 DOI: 10.1021/acs.jpcb.2c08070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
How to distinguish D2O and H2O and determine the trace H2O content in D2O solvent, by using molecule-based spectral probes, is an intriguing topic in analytical chemistry, yet considerably few examples remain up to now, likely due to the very similar physical/chemical properties between D2O and H2O. In this work, we found that both the hydrolysis reactions to release fluorescent amines and aggregation-induced emission (AIE) of imines, functioning as dual fluorescence signals to distinguish D2O and H2O, could be modulated by changing the imine structures. The hydrophobicity of imines showed an important contribution to the ability of modulating the hydrolysis reactions and AIE, demonstrating a significant difference on fluorescence signals in D2O and H2O solvents. Among all tested imines, probe 3, condensed from 2-naphthylamine and salicylaldehyde, was found to have the potential ability to act as an ideal candidate for probing the H2O content in D2O solvent, particularly in a low H2O content range, using the ratiomeric emission signals.
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Affiliation(s)
- Rui-Xue Ji
- College of Materials Science and Engineering, Huaqiao University, Xiamen, Fujian 361021, China
| | - Jiang-Shan Shen
- College of Materials Science and Engineering, Huaqiao University, Xiamen, Fujian 361021, China.,Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Huaqiao University, Xiamen, Fujian 361021, China
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93
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Wang D, Zhang Y, Wang P, Guo Y, Zhao Y, Cao S. Investigation of the Asymmetric Addition Reactions Induced by Pentacoordinated Hydrospirophosphorane Substrate. J Org Chem 2023; 88:1385-1402. [PMID: 36633837 DOI: 10.1021/acs.joc.2c02231] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Pentacoordinated bisaminoacyl hydrospirophosphoranes were first found to induce the asymmetric addition reactions as a novel chiral organic framework. Asymmetric addition reactions of bisaminoacyl hydrospirophosphoranes with aromatic aldehyde and in situ generated imine were investigated, and the corresponding α-hydroxyspirophosphonates and α-amino spirophosphonates were obtained. The addition reaction of hydrospirophosphoranes with ΔP configuration showed better stereoselectivity than that with ΛP configuration, not only for the addition reaction to aromatic aldehyde but also to in situ generated imine. Furthermore, the stereochemical mechanisms of asymmetric addition reactions induced by pentacoordinated hydrospirophosphorane were proposed by 31P NMR tracing experiment and X-ray diffraction analysis.
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Affiliation(s)
- Di Wang
- College of Chemistry, The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yang Zhang
- College of Chemistry, The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Peipei Wang
- College of Chemistry, The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yanchun Guo
- College of Chemistry, The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yufen Zhao
- College of Chemistry, The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Zhengzhou University, Zhengzhou 450052, P. R. China.,Institute Drug Discovery Technology, Ningbo University, Ningbo 315211, P. R. China
| | - Shuxia Cao
- College of Chemistry, The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Zhengzhou University, Zhengzhou 450052, P. R. China
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94
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Aromatic polyimine covalent adaptable networks with superior water and heat resistances. Eur Polym J 2023. [DOI: 10.1016/j.eurpolymj.2023.111912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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95
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Ayme JF, Bruchmann B, Karmazin L, Kyritsakas N. Transient self-assembly of metal-organic complexes. Chem Sci 2023; 14:1244-1251. [PMID: 36756320 PMCID: PMC9891378 DOI: 10.1039/d2sc06374c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
Implementing transient processes in networks of dynamic molecules holds great promise for developing new functional behaviours. Here we report that trichloroacetic acid can be used to temporarily rearrange networks of dynamic imine-based metal complexes towards new equilibrium states, forcing them to express complexes otherwise unfavourable in their initial equilibrium states. Basic design principles were determined for the creation of such networks. Where a complex distribution of products was obtained in the initial equilibrium state of the system, the transient rearrangement temporarily yielded a simplified output, forcing a more structured distribution of products. Where a single complex was obtained in the initial equilibrium state of the system, the transient rearrangement temporarily modified the properties of this complex. By doing so, the mechanical properties of an helical macrocyclic complex could be temporarily altered by rearranging it into a [2]catenane.
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Affiliation(s)
- Jean-François Ayme
- BASF SE, Joint Research Network on Advanced Materials and Systems (JONAS) Carl-Bosch Str. 38 67056 Ludwigshafen Germany
| | - Bernd Bruchmann
- BASF SE, Joint Research Network on Advanced Materials and Systems (JONAS) Carl-Bosch Str. 38 67056 Ludwigshafen Germany
| | - Lydia Karmazin
- Service de Radiocristallographie, Fédération de chimie Le Bel FR2010, Université de Strasbourg 1 rue Blaise Pascal 67008 Strasbourg France
| | - Nathalie Kyritsakas
- Service de Radiocristallographie, Fédération de chimie Le Bel FR2010, Université de Strasbourg 1 rue Blaise Pascal 67008 Strasbourg France
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96
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Cibotaru S, Nicolescu A, Marin L. Dynamic PEGylated phenothiazine imines; synthesis, photophysical behavior and reversible luminescence switching in response to external stimuli. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114282] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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97
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Wang H, Giardino GJ, Chen R, Yang C, Niu J, Wang D. Photocatalytic Depolymerization of Native Lignin toward Chemically Recyclable Polymer Networks. ACS CENTRAL SCIENCE 2023; 9:48-55. [PMID: 36712484 PMCID: PMC9881207 DOI: 10.1021/acscentsci.2c01257] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Indexed: 06/14/2023]
Abstract
As an inedible component of biomass, lignin features rich functional groups that are desired for chemical syntheses. How to effectively depolymerize lignin without compromising the more valuable cellulose and hemicellulose has been a significant challenge. Existing biomass processing procedures either induce extensive condensation in lignin that greatly hinders its chemical utilization or focus on fully depolymerizing lignin to produce monomers that are difficult to separate for subsequent chemical synthesis. Here, we report a new approach to selective partial depolymerization, which produces oligomers that can be readily converted to chemically recyclable polymer networks. The process takes advantage of the high selectivity of photocatalytic activation of the β-O-4 bond in lignin by tetrabutylammonium decatungstate (TBADT). The availability of exogenous electron mediators or scavengers promotes cleavage or oxidation of this bond, respectively, enabling high degrees of control over the depolymerization and the density of a key functional group, C=O, in the products. The resulting oligomers can then be readily utilized for the synthesis of polymer networks through reactions between C=O and branched -NH2 as a dynamic covalent cross-linker. Importantly, the resulting polymer network can be recycled to enable a circular economy of materials directly derived from biomass.
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Affiliation(s)
| | | | - Rong Chen
- Department of Chemistry, Merkert Chemistry
Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Cangjie Yang
- Department of Chemistry, Merkert Chemistry
Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Jia Niu
- Department of Chemistry, Merkert Chemistry
Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Dunwei Wang
- Department of Chemistry, Merkert Chemistry
Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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98
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Huang T, Jiang H, Douglin JC, Chen Y, Yin S, Zhang J, Deng X, Wu H, Yin Y, Dekel DR, Guiver MD, Jiang Z. Single Solution-Phase Synthesis of Charged Covalent Organic Framework Nanosheets with High Volume Yield. Angew Chem Int Ed Engl 2023; 62:e202209306. [PMID: 36395246 DOI: 10.1002/anie.202209306] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/22/2022] [Accepted: 11/17/2022] [Indexed: 11/19/2022]
Abstract
Covalent organic framework nanosheets (COF-NSs) are emerging building blocks for functional materials, and their scalable fabrication is highly desirable. Current synthetic methods suffer from low volume yields resulting from confined on-surface/at-interface growth space and complex multiple-phase synthesis systems. Herein, we report the synthesis of charged COF-NSs in open space using a single-phase organic solution system, achieving magnitudes higher volume yields of up to 18.7 mg mL-1 . Charge-induced electrostatic repulsion forces enable in-plane anisotropic secondary growth from initial discrete and disordered polymers into large and crystalline COF-NSs. The charged COF-NS colloidal suspensions are cast into thin and compact proton exchange membranes (PEMs) with lamellar morphology and oriented crystallinity, displaying outstanding proton conductivity, negligible dimensional swelling, and good H2 /O2 fuel cell performance.
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Affiliation(s)
- Tong Huang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.,State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China.,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Haifei Jiang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.,State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China
| | - John C Douglin
- The Wolfson Department of Chemical Engineering, Technion, Israel Institute of Technology, Haifa, 3200003, Israel
| | - Yu Chen
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Shuoyao Yin
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China
| | - Junfeng Zhang
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China.,National Industry-Education Platform of Energy Storage, Tianjin University, Tianjin, 300072, China
| | - Xiaojuan Deng
- Analysis and Testing Center, Tianjin University, Tianjin, 300072, China
| | - Hong Wu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Yan Yin
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China.,National Industry-Education Platform of Energy Storage, Tianjin University, Tianjin, 300072, China
| | - Dario R Dekel
- The Wolfson Department of Chemical Engineering, Technion, Israel Institute of Technology, Haifa, 3200003, Israel.,The Nancy & Stephen Grand Technion Energy Program (GTEP), Technion, Israel Institute of Technology, Haifa, 3200003, Israel
| | - Michael D Guiver
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China.,National Industry-Education Platform of Energy Storage, Tianjin University, Tianjin, 300072, China
| | - Zhongyi Jiang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
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99
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Self-Assembly of a Purely Organic Bowl in Water via Acylhydrazone Formation. Molecules 2023; 28:molecules28030976. [PMID: 36770651 PMCID: PMC9921396 DOI: 10.3390/molecules28030976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/05/2023] [Accepted: 01/11/2023] [Indexed: 01/21/2023] Open
Abstract
A bowl-shaped molecule can be self-assembled by condensing a triscationic hexaaldehyde compound and three equiv. of a dihydrazide linkers in pure water. The molecular bowl is thus composed of a triscationic π-electron deficient platform, as well as a hexagonal rim that contains six acylhydrazone functions. When the counteranions are chloride, the solid-state structure reveals that this molecular bowl undergoes dimerization via N-H···Cl hydrogen bonds, forming a cage-like dimer with a huge inner cavity. This molecular bowl can employ its cavity to accommodate a hydrophobic guest, namely 1-adamantanecarboxylic acid in aqueous media.
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100
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Liu F, Anton N, Niko Y, Klymchenko AS. Controlled Release and Capture of Aldehydes by Dynamic Imine Chemistry in Nanoemulsions: From Delivery to Detoxification. ACS APPLIED BIO MATERIALS 2023; 6:246-256. [PMID: 36516427 DOI: 10.1021/acsabm.2c00861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Current biomedical applications of nanocarriers are focused on drug delivery, where encapsulated cargo is released in the target tissues under the control of external stimuli. Here, we propose a very different approach, where the active toxic molecules are removed from biological tissues by the nanocarrier. It is based on the drug-sponge concept, where specific molecules are captured by the lipid nanoemulsion (NE) droplets due to dynamic covalent chemistry inside their oil core. To this end, we designed a highly lipophilic amine (LipoAmine) capable of reacting with a free cargo-aldehyde (fluorescent dye and 4-hydroxynonenal toxin) directly inside lipid NEs, yielding a lipophilic imine conjugate well encapsulated in the oil core. The formation of imine bonds was first validated using a push-pull pyrene aldehyde dye, which changes its emission color during the reaction. The conjugate formation was independently confirmed by mass spectrometry. As a result, LipoAmine-loaded NEs spontaneously loaded cargo-aldehydes, yielding formulations stable against leakage at pH 7.4, which can further release the cargo in a low pH range (4-6) in solutions and living cells. Using fluorescence microscopy, we showed that LipoAmine NEs can extract pyrene aldehyde dye from cells as well as from an epithelial tissue (chicken skin). Moreover, successful extraction from cells was also achieved for a highly toxic aliphatic aldehyde 4-hydroxynonenal, which allowed obtaining the proof of concept for detoxification of living cells. Taken together, these results show that the dynamic imine chemistry inside NEs can be used to develop detoxification platforms.
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Affiliation(s)
- Fei Liu
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Université de Strasbourg, 74 route du Rhin, Illkirch 67401, France.,INSERM UMR 1260, Regenerative Nanomedicine (RNM), CRBS, Université de Strasbourg, Strasbourg 67000, France
| | - Nicolas Anton
- INSERM UMR 1260, Regenerative Nanomedicine (RNM), CRBS, Université de Strasbourg, Strasbourg 67000, France
| | - Yosuke Niko
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, 2-5-1, Akebono-cho, Kochi-shi, Kochi 780-8520, Japan
| | - Andrey S Klymchenko
- Laboratoire de Bioimagerie et Pathologies, UMR 7021 CNRS, Université de Strasbourg, 74 route du Rhin, Illkirch 67401, France
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