1
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Dissipative crystallization of ion-pair receptors. Chem 2023. [DOI: 10.1016/j.chempr.2022.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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2
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Wang J, Avram L, Diskin-Posner Y, Białek MJ, Stawski W, Feller M, Klajn R. Altering the Properties of Spiropyran Switches Using Coordination Cages with Different Symmetries. J Am Chem Soc 2022; 144:21244-21254. [DOI: 10.1021/jacs.2c08901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jinhua Wang
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Liat Avram
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yael Diskin-Posner
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Michał J. Białek
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie Street, 50383 Wrocław, Poland
| | - Wojciech Stawski
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Moran Feller
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
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3
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Sharko A, Livitz D, De Piccoli S, Bishop KJM, Hermans TM. Insights into Chemically Fueled Supramolecular Polymers. Chem Rev 2022; 122:11759-11777. [PMID: 35674495 DOI: 10.1021/acs.chemrev.1c00958] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Supramolecular polymerization can be controlled in space and time by chemical fuels. A nonassembled monomer is activated by the fuel and subsequently self-assembles into a polymer. Deactivation of the molecule either in solution or inside the polymer leads to disassembly. Whereas biology has already mastered this approach, fully artificial examples have only appeared in the past decade. Here, we map the available literature examples into four distinct regimes depending on their activation/deactivation rates and the equivalents of deactivating fuel. We present increasingly complex mathematical models, first considering only the chemical activation/deactivation rates (i.e., transient activation) and later including the full details of the isodesmic or cooperative supramolecular processes (i.e., transient self-assembly). We finish by showing that sustained oscillations are possible in chemically fueled cooperative supramolecular polymerization and provide mechanistic insights. We hope our models encourage the quantification of activation, deactivation, assembly, and disassembly kinetics in future studies.
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Affiliation(s)
| | - Dimitri Livitz
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | | | - Kyle J M Bishop
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Thomas M Hermans
- University of Strasbourg & CNRS, UMR7140, Strasbourg 67000, France
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4
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Olivieri E, Gasch B, Quintard G, Naubron JV, Quintard A. Dissipative Acid-Fueled Reprogrammable Supramolecular Materials. ACS APPLIED MATERIALS & INTERFACES 2022; 14:24720-24728. [PMID: 35580903 DOI: 10.1021/acsami.2c01608] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Smart materials reversibly changing properties in response to a stimuli are promising for a broad array of applications. In this article, we report the use of trichloroacetic acid (TCA) as fuel to create new types of time-controlled materials switching reversibly from a gel to a solution (gel-sol-gel cycle). Applying various neutral amines as organogelators, TCA addition induces amine protonation, switching the system to a solution, while TCA decarboxylation over time enables a return to the initial gel state. Consequently, the newly obtained materials possess interesting time-dependent properties applied in the generation of remoldable objects, as an erasing ink, as chiroptical switches, or for the generation of new types of electrical systems.
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Affiliation(s)
- Enzo Olivieri
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
| | - Baptiste Gasch
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
| | - Guilhem Quintard
- Université de Lyon, INSA LYON, Ingénierie des Matériaux Polymères IMP-UMR CNRS 5223, F 69621 Villeurbanne, France
| | - Jean-Valère Naubron
- Aix Marseille Univ, CNRS, Centrale Marseille, Spectropole, FR1739 Marseille, France
| | - Adrien Quintard
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
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5
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Wang Y, Zhang Y, Guan Y, Zhang Y. Magnetic Field-Assisted Fast Assembly of Microgel Colloidal Crystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:6057-6065. [PMID: 35502583 DOI: 10.1021/acs.langmuir.2c00297] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Compared with the colloidal crystals (CCs) of hard spheres, large-scale, high-quality CCs of soft microgel spheres are easier to be assembled because they are more tolerant to defects. However, to assemble microgel CCs, a microgel dispersion should first be concentrated and then allowed to crystallize, which is tedious and time-consuming. Herein, we demonstrated that a magnetic poly(N-isopropylacrylamide) (PNIPAM) microgel with an Fe3O4 core and a PNIPAM shell can be assembled into CCs quickly by simply applying an external magnetic field to the diluted microgel dispersions. The resulting CCs are highly ordered as revealed by their iridescent color, laser diffraction pattern, and confocal characterization. They display a sharp Bragg peak on their reflection spectra, which shifts to lower wavelength when heated because of the thermosensitivity of the PNIPAM shell. The magnetic assembly is not only simple and fast but also allows control of the CC structure in both horizontal and vertical directions. Using spatially varying magnetic fields, patterned microgel CCs were facilely assembled. More importantly, magnetic microgel spheres with different sizes can be assembled in a layer-by-layer manner by adding them sequentially, and the thickness of each layer can be simply controlled by the amount of spheres added.
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Affiliation(s)
- Yafei Wang
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yan Zhang
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ying Guan
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yongjun Zhang
- Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- School of Chemistry, Tiangong University, Tianjin 300387, China
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6
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Abstract
Spatial, temporal, and remote control of proton chemistry can be achieved by using photoacids, which are molecules that transform from weak to strong acids under light. Most of proton chemistry is driven by a high concentration of protons ([H+]), which is difficult to obtain using excited-state photoacids. Metastable-stable state photoacids (mPAHs) can reversibly generate a high [H+] under visible light with a moderate intensity. It has been widely applied in different fields, e.g. fueling dissipative assemblies, driving molecular machines, controlling organic reactions, powering nanoreactors, curing diseases, manipulating DNA and proteins, developing smart materials, capturing carbon dioxide in air etc. This article compares mPAH with excited-state photoacid as well as common acids e.g. HCl to explain its advantages. Recent studies on the thermal dynamics, kinetics, and photoreaction of mPAHs are reported. The advantages and disadvantages of the three types of mPAHs, i.e. merocyanine, indazole, and TCF mPAHs, are compared with regard to photo-induced [H+], switching rate, and other properties. The mechanisms of controlling or driving functional systems, which involve acid-base reactions, acid catalyzed reactions, ionic bonding, coordination bonding, hydrogen bonding, ion exchange, cation-π interaction, solubility, swellability, permeability, and pH change in biosystems, are described. Applications of mPAHs in the chemical, material, energy, biotechnology and biomedical fields published in the past 5 years are reviewed. Prospects in the development and application of mPAHs are discussed.
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Affiliation(s)
- Yi Liao
- Florida Institute of Technology, 150 W University Blvd, Melbourne, Florida, USA.
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7
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Spatola E, Rispoli F, Del Giudice D, Cacciapaglia R, Casnati A, Marchiò L, Baldini L, Di Stefano S. Dissipative control of the fluorescence of a 1,3-dipyrenyl calix[4]arene in the cone conformation. Org Biomol Chem 2021; 20:132-138. [PMID: 34816861 DOI: 10.1039/d1ob02096j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The temporal control (ON/OFF/ON) of the fluorescence of a dichloromethane/acetonitrile 1 : 1 solution of calixarene 3 decorated with two pyrenyl moieties at the upper rim is attained by the addition of CCl3CO2H used as a convenient chemical fuel.
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Affiliation(s)
- Emanuele Spatola
- Dipartimento di Chimica Università di Roma La Sapienza and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Roma, Italy.
| | - Francesco Rispoli
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Daniele Del Giudice
- Dipartimento di Chimica Università di Roma La Sapienza and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Roma, Italy.
| | - Roberta Cacciapaglia
- Dipartimento di Chimica Università di Roma La Sapienza and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Roma, Italy.
| | - Alessandro Casnati
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Luciano Marchiò
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Laura Baldini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Stefano Di Stefano
- Dipartimento di Chimica Università di Roma La Sapienza and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Roma, Italy.
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9
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10
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Ryssy J, Natarajan AK, Wang J, Lehtonen AJ, Nguyen MK, Klajn R, Kuzyk A. Light-Responsive Dynamic DNA-Origami-Based Plasmonic Assemblies. Angew Chem Int Ed Engl 2021; 60:5859-5863. [PMID: 33320988 PMCID: PMC7986157 DOI: 10.1002/anie.202014963] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Indexed: 12/11/2022]
Abstract
DNA nanotechnology offers a versatile toolbox for precise spatial and temporal manipulation of matter on the nanoscale. However, rendering DNA‐based systems responsive to light has remained challenging. Herein, we describe the remote manipulation of native (non‐photoresponsive) chiral plasmonic molecules (CPMs) using light. Our strategy is based on the use of a photoresponsive medium comprising a merocyanine‐based photoacid. Upon exposure to visible light, the medium decreases its pH, inducing the formation of DNA triplex links, leading to a spatial reconfiguration of the CPMs. The process can be reversed simply by turning the light off and it can be repeated for multiple cycles. The degree of the overall chirality change in an ensemble of CPMs depends on the CPM fraction undergoing reconfiguration, which, remarkably, depends on and can be tuned by the intensity of incident light. Such a dynamic, remotely controlled system could aid in further advancing DNA‐based devices and nanomaterials.
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Affiliation(s)
- Joonas Ryssy
- Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076, Aalto, Finland
| | - Ashwin K Natarajan
- Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076, Aalto, Finland
| | - Jinhua Wang
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Arttu J Lehtonen
- Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076, Aalto, Finland
| | - Minh-Kha Nguyen
- Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076, Aalto, Finland.,Faculty of Chemical Engineering, HCMC University of Technology, VNU-HCM, Ho Chi Minh City, 700000, Vietnam
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Anton Kuzyk
- Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076, Aalto, Finland
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11
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Leng Z, Peng F, Hao X. Chemical-Fuel-Driven Assembly in Macromolecular Science: Recent Advances and Challenges. Chempluschem 2020; 85:1190-1199. [PMID: 32584522 DOI: 10.1002/cplu.202000192] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/19/2020] [Indexed: 12/17/2022]
Abstract
In the past decade, chemical-fuel-driven processes have been integrated with synthetic self-assembled systems, in which both the formation and properties can be carefully controlled. This strategy can drive systems far away from equilibrium, tailor the lifetime window of transient self-assembled systems, thus holding promise for future smart, adaptive, self-regulated, and life-like systems. By judging whether the building blocks or transient self-assembled systems participate in the fuel-to-waste conversion, the reported systems can be divided into two classes: dissipative self-assembly and self-assembly under dissipative conditions. Among these systems, the utilization of macromolecular building blocks to design non-equilibrium self-assemblied systems is becoming common. Macromolecular systems capable of dissipating energy with a programmed time domain have found widespread application, and have therefore been an active field of scientific inquiry. This Minireview aims to highlight the recent progress and opportunities of chemical-fuel-driven assembly in macromolecules. We envision that chemical-fuel-driven approach will play an increasingly important role in polymer science in the near future.
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Affiliation(s)
- ZeJian Leng
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Feng Peng
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Xiang Hao
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, P. R. China
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12
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Berton C, Busiello DM, Zamuner S, Solari E, Scopelliti R, Fadaei-Tirani F, Severin K, Pezzato C. Thermodynamics and kinetics of protonated merocyanine photoacids in water. Chem Sci 2020; 11:8457-8468. [PMID: 34123105 PMCID: PMC8163397 DOI: 10.1039/d0sc03152f] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/27/2020] [Indexed: 12/19/2022] Open
Abstract
Metastable-state photoacids (mPAHs) are chemical species whose photo-activated state is long-lived enough to allow for proton diffusion. Liao's photoacid (1) represents the archetype of mPAHs, and is being widely used on account of its unique capability to change the acidity of aqueous solutions reversibly. The behavior of 1 in water, however, still remains poorly understood. Herein, we provide in-depth insights on the thermodynamics and kinetics of 1 in water through a series of comparative 1H NMR and UV-Vis studies and relative modelling. Under dark conditions, we quantified a three-component equilibrium system where the dissociation (K a) of the open protonated form (MCH) is followed by isomerization (K c) of the open deprotonated form (MC) to the closed spiropyran form (SP) - i.e., in the absence of light, the ground state acidity can be expressed as K GS a = K a(1 + K c). On the other hand, under powerful and continuous light irradiation we were able to assess, for the first time experimentally, the dissociation constant (K MS a) of the protonated metastable state (cis-MCH). In addition, we found that thermal ring-opening of SP is always rate-determining regardless of pH, whereas hydrolysis is reminiscent of what is found for Schiff bases. The proposed methodology is general, and it was applied to two other compounds bearing a shorter (ethyl, 2) and a longer (butyl, 3) alkyl-1-sulfonate bridge. We found that the pK a remains constant, whereas both pK c and pK MS a linearly increase with the length of the alkyl bridge. Importantly, all results are consistent with a four-component model cycle, which describes perfectly the full dynamics of proton release/uptake of 1-3 in water. The superior hydrolytic stability and water solubility of compound 3, together with its relatively high pK GS a (low K c), allowed us to achieve fully reversible jumps of 2.5 pH units over 18 consecutive cycles (6 hours).
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Affiliation(s)
- Cesare Berton
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Daniel Maria Busiello
- Institut de Physique, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Stefano Zamuner
- Institut de Physique, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Euro Solari
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Cristian Pezzato
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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13
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Bian T, Chu Z, Klajn R. The Many Ways to Assemble Nanoparticles Using Light. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905866. [PMID: 31709655 DOI: 10.1002/adma.201905866] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 10/07/2019] [Indexed: 06/10/2023]
Abstract
The ability to reversibly assemble nanoparticles using light is both fundamentally interesting and important for applications ranging from reversible data storage to controlled drug delivery. Here, the diverse approaches that have so far been developed to control the self-assembly of nanoparticles using light are reviewed and compared. These approaches include functionalizing nanoparticles with monolayers of photoresponsive molecules, placing them in photoresponsive media capable of reversibly protonating the particles under light, and decorating plasmonic nanoparticles with thermoresponsive polymers, to name just a few. The applicability of these methods to larger, micrometer-sized particles is also discussed. Finally, several perspectives on further developments in the field are offered.
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Affiliation(s)
- Tong Bian
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Zonglin Chu
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
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14
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Zhong Y, Li P, Hao J, Wang X. Bioinspired Self-Healing of Kinetically Inert Hydrogels Mediated by Chemical Nutrient Supply. ACS APPLIED MATERIALS & INTERFACES 2020; 12:6471-6478. [PMID: 31960674 DOI: 10.1021/acsami.9b20445] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Dynamic stability and self-healing ability are two inherently compatible properties for living organisms. By contrast, kinetic stability and intrinsic healability are two desired but mostly incompatible properties for synthetic materials. This is because the healing of these materials heavily relies on the kinetic lability of the chemical bonds or physical interactions in materials. Inspired by the hierarchically and temporally controlled wound healing in biological systems, here, we report the intrinsic healing of kinetically stable hydrogels, regulated by the consumption of chemical nutrients. The acylhydrazone-based polymer hydrogels with preinstalled urease and urea were formed at a low initial pH, followed by in situ enzymatic generation of a base to deactivate the dynamic bonds, allowing efficient fabrication of kinetically stable hydrogels. The healing of damaged hydrogels was effective when fed with proper chemical nutrients (i.e., acidic urea solutions), in which case a transient acidic pH state was temporally programmed by combining a fast acidic activator (for structural healing) with the slow, biocatalytic generation of a base (for property recovery). The ability to regulate both hydrogel fabrication and healing via a single enzymatic reaction could provide a new approach to create kinetically stable materials capable of healing damages on demand.
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Affiliation(s)
- Yuanbo Zhong
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering , Shandong University , Jinan , Shandong 250100 , China
| | - Panpan Li
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering , Shandong University , Jinan , Shandong 250100 , China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry and Key Laboratory of Special Aggregated Materials of the Ministry of Education , Shandong University , Jinan , Shandong 250100 , China
| | - Xu Wang
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering , Shandong University , Jinan , Shandong 250100 , China
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Chimisso V, Fodor C, Meier W. Effect of Divalent Cation on Swelling Behavior of Anionic Microgels: Quantification and Dynamics of Ion Uptake and Release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13413-13420. [PMID: 31584278 DOI: 10.1021/acs.langmuir.9b02791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Poly(N-vinylcaprolactam-co-itaconate) (P(VCL-co-IADME) microgels were synthesized varying the molar ratio between VCL and IADME via free radical precipitation polymerization in the presence of quaternary ammonium surfactant. In order to determine the effect of the divalent metal ions on the structure and the swelling behavior of the microgel systems, both neutral and charged forms of the hydrogels after hydrolysis were investigated. The triggered gel collapse caused by the divalent metal ion together with the quantification of the metal ion uptake was studied in detail by titration and ion chromatography methods and revealed the minimum concentration around 0.1 mM to trigger gel collapse on the treated gels. Uptake and release dynamics of the gels were followed by turbidity measurements and were in the time-range of 2 and 17 s, depending on the composition and the concentrations.
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Affiliation(s)
- Vittoria Chimisso
- University of Basel , Department of Chemistry , Mattenstrasse 24a , BPR1096, 4002 Basel , Basel-Stadt , Switzerland
| | - Csaba Fodor
- University of Basel , Department of Chemistry , Mattenstrasse 24a , BPR1096, 4002 Basel , Basel-Stadt , Switzerland
| | - Wolfgang Meier
- University of Basel , Department of Chemistry , Mattenstrasse 24a , BPR1096, 4002 Basel , Basel-Stadt , Switzerland
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16
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Zhang H, Junaid M, Liu K, Ras RHA, Ikkala O. Light-induced reversible hydrophobization of cationic gold nanoparticles via electrostatic adsorption of a photoacid. NANOSCALE 2019; 11:14118-14122. [PMID: 31318006 PMCID: PMC8928170 DOI: 10.1039/c9nr05416b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 07/10/2019] [Indexed: 05/29/2023]
Abstract
The ability to switch the hydrophilicity/hydrophobicity of nanoparticles promises great potential for applications. Here we report a generic approach that allows hydrophobization of cationic surfaces by light-induced photoacid switching from the unbound zwitterionic form to the electrostatically bound anionic form. Importantly, this allows reversible assembly and disassembly of cationic AuNPs, with disassembly kinetics controlled by temperature. The AuNPs can be repeatedly transferred between aqueous and non-polar solvents using light, showing potential in purification processes. In the macroscopic scale, nontrivially, light triggers the in situ hydrophobization of a flat cationized gold surface. The current approach is generic and opens up a new way to control the surface properties and self-assembly of nanoparticles.
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Affiliation(s)
- Hang Zhang
- Department of Applied Physics, Aalto UniversityP.O. Box 15100FI 02150 EspooFinland
| | - Muhammad Junaid
- Department of Applied Physics, Aalto UniversityP.O. Box 15100FI 02150 EspooFinland
| | - Kai Liu
- Department of Applied Physics, Aalto UniversityP.O. Box 15100FI 02150 EspooFinland
| | - Robin H. A. Ras
- Department of Applied Physics, Aalto UniversityP.O. Box 15100FI 02150 EspooFinland
| | - Olli Ikkala
- Department of Applied Physics, Aalto UniversityP.O. Box 15100FI 02150 EspooFinland
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Honda K, Sazuka Y, Iizuka K, Matsui S, Uchihashi T, Kureha T, Shibayama M, Watanabe T, Suzuki D. Hydrogel Microellipsoids that Form Robust String-Like Assemblies at the Air/Water Interface. Angew Chem Int Ed Engl 2019; 58:7294-7298. [PMID: 30957363 DOI: 10.1002/anie.201901611] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/17/2019] [Indexed: 11/09/2022]
Abstract
Soft colloidal particles such as hydrogel microspheres assemble at air/water or oil/water interfaces, where the soft colloids are highly deformed and their surface polymer chains are highly entangled with each other. Herein, we report the formation of robust one-dimensional, string-like colloidal assemblies through self-organization of hydrogel microspheres with shape anisotropy at the air/water interface of sessile droplets. Shape-anisotropic hydrogel microspheres were synthesized via two-step polymerization, whereby a hydrogel shell was formed onto preformed rigid microellipsoids. The shape anisotropy of the hydrogel microspheres was confirmed by transmission electron microscopy and high-speed atomic force microscopy as well as by light-scattering measurements. The present findings are crucial for the understanding of natural self-organization phenomena, where "softness" influences microscopic assembled structures such as those of Nostoc bacteria.
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Affiliation(s)
- Kenshiro Honda
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
| | - Yuka Sazuka
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
| | - Kojiro Iizuka
- College of Systems Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama city, Saitama, 337-8570, Japan
| | - Shusuke Matsui
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
| | - Takayuki Uchihashi
- Department of Physics and Structural Biology Research Center, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan.,Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi, 444-8787, Japan
| | - Takuma Kureha
- Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, 277-8581, Japan
| | - Mitsuhiro Shibayama
- Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, 277-8581, Japan
| | - Takumi Watanabe
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
| | - Daisuke Suzuki
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan.,Division of Smart Textiles, Institute for Fiber Engineering, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
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18
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Honda K, Sazuka Y, Iizuka K, Matsui S, Uchihashi T, Kureha T, Shibayama M, Watanabe T, Suzuki D. Hydrogel Microellipsoids that Form Robust String‐Like Assemblies at the Air/Water Interface. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Kenshiro Honda
- Graduate School of Textile Science & TechnologyShinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
| | - Yuka Sazuka
- Graduate School of Textile Science & TechnologyShinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
| | - Kojiro Iizuka
- College of Systems Engineering and ScienceShibaura Institute of Technology 307 Fukasaku, Minuma-ku Saitama city Saitama 337-8570 Japan
| | - Shusuke Matsui
- Graduate School of Textile Science & TechnologyShinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
| | - Takayuki Uchihashi
- Department of Physics and Structural Biology Research CenterGraduate School of ScienceNagoya University Furo-cho, Chikusa-ku Nagoya Aichi 464-8602 Japan
- Exploratory Research Center on Life and Living SystemsNational Institutes of Natural Sciences 5-1 Higashiyama, Myodaiji Okazaki Aichi 444-8787 Japan
| | - Takuma Kureha
- Institute for Solid State PhysicsThe University of Tokyo Kashiwanoha Kashiwa 277-8581 Japan
| | - Mitsuhiro Shibayama
- Institute for Solid State PhysicsThe University of Tokyo Kashiwanoha Kashiwa 277-8581 Japan
| | - Takumi Watanabe
- Graduate School of Textile Science & TechnologyShinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
| | - Daisuke Suzuki
- Graduate School of Textile Science & TechnologyShinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
- Division of Smart TextilesInstitute for Fiber EngineeringInterdisciplinary Cluster for Cutting Edge ResearchShinshu University 3-15-1 Tokida Ueda Nagano 386-8567 Japan
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19
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Elgattar A, Abeyrathna N, Liao Y. Localized pH Pulses in PBS Buffer Repeatedly Induced by Visible Light. J Phys Chem B 2019; 123:648-654. [PMID: 30615451 DOI: 10.1021/acs.jpcb.8b11677] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The pH of biological systems is important for the activity of enzymes, and abnormal cellular pH is related to many diseases. Spatial and temporal modulation of pH with light will be useful for studying the pH effects on enzymatic functions and disease mechanisms and may lead to new drug delivery and therapeutic methods. However, the pH of biological systems is maintained by pH buffers, which implies that only temporary pH change (pH pulse) can be induced in an open system. A key fundamental problem is whether a photoinduced pH pulse can be strong and long enough to generate a significant effect. In this work, a photoinduced pH pulse in a micrometer hydrophilic film in PBS buffer has been demonstrated. The thin film was made of an metastable-state photoacid (mPAH) polymer. It is an open system that allows exchange of protons. A quick release of the protons from the mPAHs and the proton exchange between the film and PBS resulted in a pH pulse generated by moderate visible-light irradiation. The magnitude of the pulse is 1.4-1.9 units with maximum pH change occurring after ∼18 s of the irradiation. Since the mPAH is a reversible photoacid, the pH pulse could be repeatedly generated after the photoacid recovered in the dark. This work shows that photochemical modulation of pH is possible even in buffered solutions.
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Affiliation(s)
- Adnan Elgattar
- Florida Institute of Technology , Melbourne , Florida 32901 , United States
| | - Nawodi Abeyrathna
- Florida Institute of Technology , Melbourne , Florida 32901 , United States
| | - Yi Liao
- Florida Institute of Technology , Melbourne , Florida 32901 , United States
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20
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Agrawal G, Agrawal R. Functional Microgels: Recent Advances in Their Biomedical Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801724. [PMID: 30035853 DOI: 10.1002/smll.201801724] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Here, a spotlight is shown on aqueous microgel particles which exhibit a great potential for various biomedical applications such as drug delivery, cell imaging, and tissue engineering. Herein, different synthetic methods to develop microgels with desirable functionality and properties along with degradable strategies to ensure their renal clearance are briefly presented. A special focus is given on the ability of microgels to respond to various stimuli such as temperature, pH, redox potential, magnetic field, light, etc., which helps not only to adjust their physical and chemical properties, and degradability on demand, but also the release of encapsulated bioactive molecules and thus making them suitable for drug delivery. Furthermore, recent developments in using the functional microgels for cell imaging and tissue regeneration are reviewed. The results reviewed here encourage the development of a new class of microgels which are able to intelligently perform in a complex biological environment. Finally, various challenges and possibilities are discussed in order to achieve their successful clinical use in future.
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Affiliation(s)
- Garima Agrawal
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Paper Mill Road, Saharanpur, 247001, Uttar Pradesh, India
| | - Rahul Agrawal
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-1500, USA
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21
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Khalil T, Alharbi A, Baum C, Liao Y. Facile Synthesis and Photoactivity of Merocyanine‐Photoacid Polymers. Macromol Rapid Commun 2018; 39:e1800319. [DOI: 10.1002/marc.201800319] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/23/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Thaaer Khalil
- Department of Chemistry Florida Institute of Technology Melbourne FL 32901 USA
| | - Arwa Alharbi
- Department of Chemistry Florida Institute of Technology Melbourne FL 32901 USA
| | - Clayton Baum
- Department of Chemistry Florida Institute of Technology Melbourne FL 32901 USA
| | - Yi Liao
- Department of Chemistry Florida Institute of Technology Melbourne FL 32901 USA
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