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Hisamatsu Y, Toriyama G, Yamamoto K, Takase H, Higuchi T, Umezawa N. Temperature Control of the Self-Assembly Process of 4-Aminoquinoline Amphiphile: Selective Construction of Perforated Vesicles and Nanofibers, and Structural Restoration Capability. Chemistry 2024; 30:e202400134. [PMID: 38361463 DOI: 10.1002/chem.202400134] [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: 01/14/2024] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 02/17/2024]
Abstract
The construction of diverse and distinctive self-assembled structures in water, based on the control of the self-assembly processes of artificial small molecules, has received considerable attention in supramolecular chemistry. Cage-like perforated vesicles are distinctive and interesting self-assembled structures. However, the development of self-assembling molecules that can easily form perforated vesicles remains challenging. This paper reports a lower critical solution temperature (LCST) behavior-triggered self-assembly property of a 4-aminoquinoline (4-AQ)-based amphiphile with a tetra(ethylene glycol) chain, in HEPES buffer (pH 7.4). This property allows to form perforated vesicles after heating at 80 °C (> LCST). The self-assembly process of the 4-AQ amphiphile can be controlled by heating at 80 °C (> LCST) or 60 °C (< LCST). After cooling to room temperature, the selective construction of the perforated vesicles and nanofibers was achieved from the same 4-AQ amphiphile. Furthermore, the perforated vesicles exhibited slow morphological transformation into intertwined-like nanofibers but were easily restored by brief heating above the LCST.
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Affiliation(s)
- Yosuke Hisamatsu
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Go Toriyama
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Katsuhiro Yamamoto
- Graduate School of Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan
| | - Hiroshi Takase
- Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Tsunehiko Higuchi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Naoki Umezawa
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
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Han JO, Lee HJ, Jeong B. Thermosensitive core-rigid micelles of monomethoxy poly(ethylene glycol)-deoxy cholic acid. Biomater Res 2022; 26:16. [PMID: 35484562 PMCID: PMC9052506 DOI: 10.1186/s40824-022-00263-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 03/28/2022] [Indexed: 11/30/2022] Open
Abstract
Background Thermosensitive micelles with rigid cores that exhibit a reversible lower critical solution temperature at 30–35 °C can be applied for drug delivery. Method Hydrophilic monomethoxy poly(ethylene glycol) was conjugated to hydrophobic deoxycholic acid to prepare monomethoxy poly(ethylene glycol)-deoxycholic acid (mPEG-DC). Micelle formation and thermosensitive solution behavior were studied using various methods, including hydrophobic dye solubilization, transmission electron microscopy, dynamic light scattering, turbidity measurement, microcalorimetry, and 1H-NMR spectroscopy. Drug release from the thermosensitive micelles was demonstrated using estradiol, a model drug. Results The mPEG-DC formed micelles with a critical micelle concentration of 0.05 wt.% and an average size of 15 nm. Aqueous mPEG-DC solutions exhibit a lower critical solution temperature (LCST) that is independent of concentration and reversible over heating and cooling cycles. The LCST transition is an entropically driven process involving dehydration of the PEG shell. The thermosensitive mPEG-DC micelles with rigid DC cores were applied as an estradiol delivery system in which estradiol was released, without initial burst, over the 16 days in a diffusion-controlled manner. Conclusions This study suggests that mPEG-DCs form thermosensitive micelles with rigid cores that can function as an excellent diffusion-controlled hydrophobic drug delivery system without initial burst release. Graphical Abstract Thermosensitive core-rigid micelles of monomethoxy poly(ethylene glycol)-deoxy cholic acid![]() Supplementary Information The online version contains supplementary material available at 10.1186/s40824-022-00263-9.
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Affiliation(s)
- Jin Ok Han
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Hyun Jung Lee
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea.
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3
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Controlling Liquid Crystal Configuration and Phase Using Multiple Molecular Triggers. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27030878. [PMID: 35164141 PMCID: PMC8839850 DOI: 10.3390/molecules27030878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/23/2022] [Accepted: 01/24/2022] [Indexed: 11/17/2022]
Abstract
Liquid crystals are able to transform a local molecular interaction into a macroscopic change of state, making them a valuable "smart" material. Here, we investigate a novel polymeric amphiphile as a candidate for molecular triggering of liquid crystal droplets in aqueous background. Using microscopy equipped with crossed polarizers and optical tweezers, we find that the monomeric amphiphile is able to trigger both a fast phase change and then a subsequent transition from nematic to isotropic. We next include sodium dodecyl sulfate (SDS), a standard surfactant, with the novel amphiphilic molecules to test phase transitioning when both were present. As seen previously, we find that the activity of SDS at the surface can result in configuration changes with hysteresis. We find that the presence of the polymeric amphiphile reverses the hysteresis previously observed during such transitions. This work demonstrates a variety of phase and configuration changes of liquid crystals that can be controlled by multiple exogenous chemical triggers.
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Liu H, Prachyathipsakul T, Koyasseril-Yehiya TM, Le SP, Thayumanavan S. Molecular bases for temperature sensitivity in supramolecular assemblies and their applications as thermoresponsive soft materials. MATERIALS HORIZONS 2022; 9:164-193. [PMID: 34549764 PMCID: PMC8757657 DOI: 10.1039/d1mh01091c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Thermoresponsive supramolecular assemblies have been extensively explored in diverse formats, from injectable hydrogels to nanoscale carriers, for a variety of applications including drug delivery, tissue engineering and thermo-controlled catalysis. Understanding the molecular bases behind thermal sensitivity of materials is fundamentally important for the rational design of assemblies with optimal combination of properties and predictable tunability for specific applications. In this review, we summarize the recent advances in this area with a specific focus on the parameters and factors that influence thermoresponsive properties of soft materials. We summarize and analyze the effects of structures and architectures of molecules, hydrophilic and lipophilic balance, concentration, components and external additives upon the thermoresponsiveness of the corresponding molecular assemblies.
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Affiliation(s)
- Hongxu Liu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | | | | | - Stephanie P Le
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
- Department of Biomedical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Centre for Bioactive Delivery, Institute for Applied Life Science, University of Massachusetts, Amherst, Massachusetts 01003, USA
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5
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Kotani Y, Yasuda H, Higashiguchi K, Matsuda K. Re-entrant Photoinduced Morphological Transformation and Temperature-Dependent Kinetic Products of a Rectangular Amphiphilic Diarylethene Assembly. Chemistry 2021; 27:11158-11166. [PMID: 33988257 DOI: 10.1002/chem.202101127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Indexed: 12/28/2022]
Abstract
An amphiphilic rectangular-shaped photochromic diarylethene bearing two hydrophobic alkyl chains and two hydrophilic tri(ethylene glycol) chains was synthesized, and its photoinduced morphological transformation in water was investigated. Two unexpected phenomena were revealed in the course of the experiments: a re-entrant photoinduced macroscopic morphological transformation and temperature-dependent kinetic products of supramolecular assembly. When the pure closed-ring isomer was dispersed in water, a re-entrant photoinduced morphological transformation, that is, a photoinduced transition from the hydrated phase to the dehydrated phase and then back to the hydrated phase, was observed by optical microscopy upon irradiation with green light at 20 °C; this was interpreted by the V-shaped phase diagram of the LCST transition. The aqueous assembly of the pure closed-ring isomer was controlled by changing the temperature; specifically, rapid cooling to 15 and 5 °C gave J and H aggregates, respectively, as the kinetic products. The thermodynamic product at both temperatures was a mixture of mostly H aggregate with a small amount of J aggregate. This behavior was rationalized by the temperature-dependent potential energy surface of the supramolecular assembly.
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Affiliation(s)
- Yasunobu Kotani
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Haruka Yasuda
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kenji Higashiguchi
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kenji Matsuda
- Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
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6
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Liu H, Lionello C, Westley J, Cardellini A, Huynh U, Pavan GM, Thayumanavan S. Understanding functional group and assembly dynamics in temperature responsive systems leads to design principles for enzyme responsive assemblies. NANOSCALE 2021; 13:11568-11575. [PMID: 34190280 DOI: 10.1039/d1nr02000e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Understanding the molecular rules behind the dynamics of supramolecular assemblies is fundamentally important for the rational design of responsive assemblies with tunable properties. Herein, we report that the dynamics of temperature-sensitive supramolecular assemblies is not only affected by the dehydration of oligoethylene glycol (OEG) motifs, but also by the thermally-promoted molecular motions. These counteracting features set up a dynamics transition point (DTP) that can be modulated with subtle variations in a small hydrophobic patch on the hydrophilic face of the amphiphilic assembly. Understanding the structural factors that control the dynamics of the assemblies leads to rational design of enzyme-responsive assemblies with tunable temperature responsive profiles.
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Affiliation(s)
- Hongxu Liu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | - Chiara Lionello
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy.
| | - Jenna Westley
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | - Annalisa Cardellini
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy.
| | - Uyen Huynh
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | - Giovanni M Pavan
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy. and Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, CH-6962 Lugano-Viganello, Switzerland
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
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7
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Lin X, Lin X. Surface ligand rigidity modulates lipid raft affinity of ultra-small hydrophobic nanoparticles: insights from molecular dynamics simulations. NANOSCALE 2021; 13:9825-9833. [PMID: 34032262 DOI: 10.1039/d1nr01563j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Differential preferences between lipids and proteins drive the formation of dynamical nanoscale membrane domains (lipid rafts), which play key roles in the proper functioning of cells. On the other hand, due to the potent physicochemical properties of nanoparticles (NPs), they have been widely used in drug delivery, bio-imaging and regulating various essential biological processes of the cells. Hence, in this work, we aim to design ultra-small hydrophobic NPs with tunable raft affinity, which is supposed to partition into the hydrophobic region of lipid membranes and be able to regulate the dynamics of the lipid raft domains. A series of μs-scale coarse-grained molecular dynamics simulations and umbrella sampling free energy calculations were performed to investigate the role of surface ligand rigidity of ultra-small hydrophobicNPs in their raft affinity. Our results indicated that the preferred localization of NPs can be tuned by adjusting their surface ligand rigidity. Generally, rigid NPs tended to target the raft domain, while soft NPs preferred the interface of the raft and non-raft domains. The free energy analysis further indicated that the surface ligand rigidity of NPs can enhance their targeting to lipid raft domains. Besides, we found that these ultra-small NPs had no significant effects on the phase separation of the lipid membrane although they might cause some local interference to surrounding lipids. These results indicate that the targeting to the lipid raft domain can be achieved by the surface ligand rigidity of NPs, which provides helpful insights for further regulations of lipid raft-mediated biological processes.
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Affiliation(s)
- Xiaoqian Lin
- Institute of Single Cell Engineering, Key Laboratory of Ministry of Education for Biomechanics and Mechanobiology, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China.
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8
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Yu ZQ, Li X, Wan W, Li XS, Fu K, Wu Y, Li ADQ. Cooperatively assembled liquid crystals enable temperature-controlled Förster resonance energy transfer. Chem Sci 2021; 12:3146-3151. [PMID: 34164081 PMCID: PMC8179397 DOI: 10.1039/d0sc06838a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Balancing the rigidity of a π-conjugated structure for strong emission and the flexibility of liquid crystals for self-assembly is the key to realizing highly emissive liquid crystals (HELCs). Here we show that (1) integrating organization-induced emission into dual molecular cooperatively-assembled liquid crystals, (2) amplifying mesogens, and (3) elongating the spacer linking the emitter and the mesogen create advanced materials with desired thermal–optical properties. Impressively, assembling the fluorescent acceptor Nile red into its host donor designed according to the aforementioned strategies results in a temperature-controlled Förster resonance energy transfer (FRET) system. Indeed, FRET exhibits strong S-curve dependence as temperature sweeps through the liquid crystal phase transformation. Such thermochromic materials, suitable for dynamic thermo-optical sensing and modulation, are anticipated to unlock new and smart approaches for controlling and directing light in stimuli-responsive devices. A temperature-sensitive Förster resonance energy transfer system was constructed using a highly emissive liquid crystal co-assembled with Nile red, enabling thermo-optical modulation for controlling and directing light in stimuli-responsive devices.![]()
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Affiliation(s)
- Zhen-Qiang Yu
- College of Chemistry and Environmental Engineering, Shenzhen University Shenzhen 518073 China
| | - Xiaodong Li
- College of Chemistry and Environmental Engineering, Shenzhen University Shenzhen 518073 China
| | - Wei Wan
- Department of Chemistry, Washington State University Pullman WA 99164 USA
| | - Xin-Shun Li
- College of Chemistry and Environmental Engineering, Shenzhen University Shenzhen 518073 China
| | - Kuo Fu
- College of Chemistry and Environmental Engineering, Shenzhen University Shenzhen 518073 China
| | - Yue Wu
- College of Chemistry and Environmental Engineering, Shenzhen University Shenzhen 518073 China
| | - Alexander D Q Li
- Department of Chemistry, Washington State University Pullman WA 99164 USA
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9
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Shechter J, Atzin N, Mozaffari A, Zhang R, Zhou Y, Strain B, Oster LM, de Pablo JJ, Ross JL. Direct Observation of Liquid Crystal Droplet Configurational Transitions using Optical Tweezers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:7074-7082. [PMID: 31990557 DOI: 10.1021/acs.langmuir.9b03629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Liquid crystals (LCs) are easily influenced by external interactions, particularly at interfaces. When rod-like LC molecules are confined to spherical droplets, they experience a competition between interfacial tension and elastic deformations. The configuration of LCs inside a droplet can be controlled using surfactants that influence the interfacial orientation of the LC molecules in the oil-phase of an oil in water emulsion. Here, we used the surfactant sodium dodecyl sulfate (SDS) to manipulate the orientation of 5CB molecules in a polydisperse emulsion and examined the configuration of the droplets as a function of SDS concentration. We triggered pronounced morphological transitions by altering the SDS concentration while observing an individual LC droplet held in place using an optical tweezer. We compared the experimental configuration changes to predictions from simulations. We observed a hysteresis in the SDS concentration that induced the morphological transition from radial to bipolar and back as well as a fluctuations in the configuration during the transition.
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Affiliation(s)
- Jake Shechter
- Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Noe Atzin
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Ali Mozaffari
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Rui Zhang
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Ye Zhou
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Benjamin Strain
- Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Linda M Oster
- Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Juan J de Pablo
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
- Center for Molecular Engineering, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jennifer L Ross
- Department of Physics, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
- Department of Physics, Syracuse University, Syracuse, New York 13244, United States
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10
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Ravishankar S, Suzuki S, Sawada T, Lim S, Serizawa T. Preparation and Dynamic Behavior of Protein-Polymer Complexes Formed with Polymer-Binding Peptides. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Samyukta Ravishankar
- School of Chemical & Biomedical Engineering, 70 Nanyang Drive, Block N1.3, Nanyang Technological University, Singapore 637457
| | - Seigo Suzuki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-H121 Ookayama, Meguro-ku, Tokyo 152-8550
| | - Toshiki Sawada
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-H121 Ookayama, Meguro-ku, Tokyo 152-8550
- Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, 4-17 Honcho, Kawaguchi, Saitama 332-0012
| | - Sierin Lim
- School of Chemical & Biomedical Engineering, 70 Nanyang Drive, Block N1.3, Nanyang Technological University, Singapore 637457
| | - Takeshi Serizawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-H121 Ookayama, Meguro-ku, Tokyo 152-8550
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11
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Park CS, Iwabata K, Sridhar U, Tsuei M, Singh K, Kim YK, Thayumanavan S, Abbott NL. A New Strategy for Reporting Specific Protein Binding Events at Aqueous-Liquid Crystal Interfaces in the Presence of Non-Specific Proteins. ACS APPLIED MATERIALS & INTERFACES 2020; 12:7869-7878. [PMID: 31825195 PMCID: PMC7368459 DOI: 10.1021/acsami.9b16867] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Aqueous-liquid crystal (LC) interfaces offer promise as responsive interfaces at which biomolecular recognition events can be amplified into macroscopic signals. However, the design of LC interfaces that distinguish between specific and non-specific protein interactions remains an unresolved challenge. Herein, we report the synthesis of amphiphilic monomers, dimers, and trimers conjugated to sulfonamide ligands via triazole rings, their assembly at aqueous-LC interfaces, and the orientational response of LCs to the interactions of carbonic anhydrase II (CAII) and serum albumin with the oligomer-decorated LC interfaces. Of six oligomers synthesized, only dimers without amide methylation were found to assemble at aqueous interfaces of nematic 4-cyano-4'-pentylbiphenyl (5CB) to induce perpendicular LC orientations. At dimer-decorated LC interfaces, we found that concentrations of CAII less than 4 μM did not measurably perturb the LC but prevented non-specific adsorption and penetration of serum albumin into the dimer-decorated interface that otherwise triggered bright, globular LC optical domains. These experiments and others (including competitive adsorption of CAII, BSA, and lysozyme) support our hypothesis that specific binding of CAII to the dimer prevents LC anchoring transitions triggered by non-specific adsorption of serum albumin. We illustrate the utility of the approach by reporting (i) the relative activity of two small-molecule inhibitors (6-ethoxy-2-benzothiazolesulfonamide and benzenesulfonamide) of CAII to sulfonamide and (ii) proteolytic digestion of a protein (CAII) by thermolysin. Overall, the results in this paper provide new insight into the interactions of proteins at aqueous-LC interfaces and fresh ideas for either blocking non-specific interactions of proteins at surfaces or reporting specific binding events at LC interfaces in the presence of non-specific proteins.
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Affiliation(s)
- Chul Soon Park
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Kazuki Iwabata
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Uma Sridhar
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Michael Tsuei
- Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Khushboo Singh
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Young-ki Kim
- Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Korea
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Nicholas L. Abbott
- Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA
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12
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Jamadar A, Das A. A pH-responsive graftable supramolecular polymer with tailorable surface functionality by orthogonal halogen bonding and hydrogen bonding. Polym Chem 2020. [DOI: 10.1039/c9py00944b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Orthogonal halogen (X)-bonding and hydrogen (H)-bonding have been employed for constructing a surface functionalizable supramolecular polymer in water featuring tunable morphology and dual stimuli (pH and temperature) responsive properties.
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Affiliation(s)
- Akshoy Jamadar
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science (IACS)
- Kolkata-700032
- India
| | - Anindita Das
- School of Applied and Interdisciplinary Sciences
- Indian Association for the Cultivation of Science (IACS)
- Kolkata-700032
- India
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13
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Si P, Shi J, Zhang P, Wang C, Chen H, Mi X, Chu W, Zhai B, Li W. MUC-1 recognition-based activated drug nanoplatform improves doxorubicin chemotherapy in breast cancer. Cancer Lett 2019; 472:165-174. [PMID: 31857156 DOI: 10.1016/j.canlet.2019.12.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 12/02/2019] [Accepted: 12/13/2019] [Indexed: 12/24/2022]
Abstract
Tumor-targeted drug delivery systems with stimuli-response drug release have been increasingly used to improve the therapeutic efficacy of antitumor drugs. Here, we report a specific molecular recognition activation drug nanoplatform based on specially designed DNA sensor-capped doxorubicin (DOX)-loaded mesoporous silica nanoparticles (MSNs), designated as specific molecular recognition-activated nanoparticle (SMRAN). DNA sensors on the targeted nanoparticles can trigger DOX release through a conformational switch induced by MUC-1. This causes a significant difference in cell viability between breast cancer MCF-7 and normal breast Hs578bst cells (24.8% and 86.0%). In vivo experiments showed that the tumor volume was reduced 1.5-times in the SMRAN treatment group. Compared with that in the DOX group, due to significantly improved tumor accumulation and retention of DOX. The strategy of the MUC-1 activated drug delivery system is expected to provide a new perspective for clinical application.
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Affiliation(s)
- Pilei Si
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Zhengzhou University People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Henan University People's Hospital, Zhengzhou, 450003, China
| | - Jinjin Shi
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Pei Zhang
- Henan Provincial Food and Drug Evaluation and Inspection Center, Henan Food and Drug Administration, Zhengzhou, 450008, China
| | - Cao Wang
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Zhengzhou University People's Hospital, Zhengzhou, 450003, China
| | - Haijun Chen
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Zhengzhou University People's Hospital, Zhengzhou, 450003, China
| | - Xuefang Mi
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Zhengzhou University People's Hospital, Zhengzhou, 450003, China
| | - Wenling Chu
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Zhengzhou University People's Hospital, Zhengzhou, 450003, China
| | - Baoping Zhai
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Zhengzhou University People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Henan University People's Hospital, Zhengzhou, 450003, China
| | - Wentao Li
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Zhengzhou University People's Hospital, Zhengzhou, 450003, China; Department of Breast Surgery, Henan University People's Hospital, Zhengzhou, 450003, China.
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14
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Sakakibara S, Yotsuji H, Higashiguchi K, Matsuda K. Photoinduced repetitive separation of a supramolecular assembly composed of an amphiphilic diarylethene mixture. SOFT MATTER 2019; 15:7918-7925. [PMID: 31538159 DOI: 10.1039/c9sm01301f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A supramolecular assembly composed of a two-component mixture of amphiphilic diarylethenes, which have octyloxycarbonyl and N-octylcarbamoyl groups, showed a unique macroscopic transformation upon irradiation with UV light and subsequent standing in the dark. Unlike the pure compounds, the assembly was repetitively separated into a blue sphere and a red-purple sparse structure. Both the blue sphere and the sparse structure turned into colorless spheres upon irradiation with visible light and the divided colorless spheres showed the same response to UV and visible light. Phase diagrams based on the change in absorption spectra upon temperature change suggested that the transformation originates from a LCST transition. In the 0.5 : 0.5 mixture, in contrast to the pure compounds, the transition temperature sharply changed at around 50% of the fraction of the closed-ring isomer. TEM imaging showed that the 0.5 : 0.5 mixture with high photoisomerization yield formed a 10 nm-sized network. Judging from the phase diagram and TEM images, the separation is understood as the local phase transition of the regions with a high fraction of the closed-ring isomer.
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Affiliation(s)
- Seiya Sakakibara
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
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15
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Urner LH, Schade B, Schulze M, Folmert K, Haag R, Pagel K. Switchable Solubility of Azobenzene-Based Bolaamphiphiles. Chemphyschem 2019; 20:1690-1697. [PMID: 31074563 DOI: 10.1002/cphc.201900334] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/08/2019] [Indexed: 11/05/2022]
Abstract
The ability to design amphiphiles with predictable solubility properties is of everlasting interest in supramolecular chemistry. Relevant structural parameters include the hydrophobic-hydrophilic balance and structural flexibility. In this work, we investigate the water solubility of azobenzene-based triglycerol bolaamphiphiles (TGBAs). In particular, we analyzed the structural effects of backbone hydrophobicity, flexibility, and cis/trans isomerization on the water solubility of a subset of five TGBAs. This leads to the first example of a non-ionic bolaamphiphile whose water solubility can be changed by irradiation with light. The underlying kinetics were monitored using liquid chromatography and a closer analysis of the underlying aggregation processes provides a mechanistic understanding of the light-driven dissolution process. We anticipate that the results obtained will help to engineer bolaamphiphiles with predictable solution properties in the future.
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Affiliation(s)
- Leonhard H Urner
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustraße 3, 14195, Berlin, Germany
| | - Boris Schade
- Freie Universität Berlin Institute of Chemistry and Biochemistry, Research Center of Electron Microscopy, 14195, Berlin, Germany
| | - Maiko Schulze
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustraße 3, 14195, Berlin, Germany
| | - Kristin Folmert
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustraße 3, 14195, Berlin, Germany
| | - Rainer Haag
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustraße 3, 14195, Berlin, Germany
| | - Kevin Pagel
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustraße 3, 14195, Berlin, Germany.,Fritz Haber Institute of the Max Planck Society, Department of Molecular Physics, Faradayweg 4-6, Berlin, Germany
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16
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Chang X, Mao H, Shan G, Bao Y, Pan P. Tuning the Thermoresponsivity of Amphiphilic Copolymers via Stereocomplex Crystallization of Hydrophobic Blocks. ACS Macro Lett 2019; 8:357-362. [PMID: 35651137 DOI: 10.1021/acsmacrolett.9b00125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thermoresponsive polymers that exhibit a cloud point temperature (Tcp) are an important class of stimuli-responsive polymers that have great potential for biomedical applications. Precise tuning of the Tcp is of fundamental importance for designing thermoresponsive polymers. However, tuning the Tcp generally requires sophisticated control over the chemical and assembled structures of thermoresponsive polymers. Here, we report a simple yet effective method to tune the Tcp of thermoresponsive polymers only by mixing and varying the mixing ratios of amphiphilic copolymer pair that contains l- and d-configured hydrophobic blocks in a dilute solution. Stereocomplex (SC) crystallization of the l- and d-configured blocks led to form core-shell micelles with a larger size, a bigger core, and a higher aggregation number, which facilitated the intermicellar aggregation upon heating due to improved intermicellar attractions. SC crystallization of the hydrophobic blocks improved the separation efficacy of the thermoresponsive copolymers for removal of hydrophobic pollutants from water.
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Affiliation(s)
- Xiaohua Chang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
| | - Hailiang Mao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
| | - Guorong Shan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
| | - Yongzhong Bao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University 38 Zheda Road, Hangzhou 310027, China
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17
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Lafleur RPM, Schoenmakers SMC, Madhikar P, Bochicchio D, Baumeier B, Palmans ARA, Pavan GM, Meijer EW. Insights into the Kinetics of Supramolecular Comonomer Incorporation in Water. Macromolecules 2019; 52:3049-3055. [PMID: 31043763 PMCID: PMC6484380 DOI: 10.1021/acs.macromol.9b00300] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/21/2019] [Indexed: 01/06/2023]
Abstract
![]()
Multicomponent
supramolecular polymers are a versatile platform
to prepare functional architectures, but a few studies have been devoted
to investigate their noncovalent synthesis. Here, we study supramolecular
copolymerizations by examining the mechanism and time scales associated
with the incorporation of new monomers in benzene-1,3,5-tricarboxamide
(BTA)-based supramolecular polymers. The BTA molecules in this study
all contain three tetra(ethylene glycol) chains at the periphery for
water solubility but differ in their alkyl chains that feature either
10, 12 or 13 methylene units. C10BTA does not form ordered
supramolecular assemblies, whereas C12BTA and C13BTA both form high aspect ratio supramolecular polymers. First, we
illustrate that C10BTA can mix into the supramolecular
polymers based on either C12BTA or C13BTA by
comparing the temperature response of the equilibrated mixtures to
the temperature response of the individual components in water. Subsequently,
we mix C10BTA with the polymers and follow the copolymerization
over time with UV spectroscopy and hydrogen/deuterium exchange mass
spectrometry experiments. Interestingly, the time scales obtained
in both experiments reveal significant differences in the rates of
copolymerization. Coarse-grained simulations are used to study the
incorporation pathway and kinetics of the C10BTA monomers
into the different polymers. The results demonstrate that the kinetic
stability of the host supramolecular polymer controls the rate at
which new monomers can enter the existing supramolecular polymers.
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Affiliation(s)
- René P M Lafleur
- Institute for Complex Molecular Systems and Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Sandra M C Schoenmakers
- Institute for Complex Molecular Systems and Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Pranav Madhikar
- Institute for Complex Molecular Systems and Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.,Institute for Complex Molecular Systems and Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Davide Bochicchio
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Via Cantonale 2c, CH-6928 Manno, Switzerland
| | - Björn Baumeier
- Institute for Complex Molecular Systems and Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.,Institute for Complex Molecular Systems and Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Anja R A Palmans
- Institute for Complex Molecular Systems and Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Giovanni M Pavan
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Via Cantonale 2c, CH-6928 Manno, Switzerland
| | - E W Meijer
- Institute for Complex Molecular Systems and Department of Mathematics and Computer Science, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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18
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Yang J, Zhai S, Qin H, Yan H, Xing D, Hu X. NIR-controlled morphology transformation and pulsatile drug delivery based on multifunctional phototheranostic nanoparticles for photoacoustic imaging-guided photothermal-chemotherapy. Biomaterials 2018; 176:1-12. [DOI: 10.1016/j.biomaterials.2018.05.033] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/19/2018] [Accepted: 05/21/2018] [Indexed: 02/02/2023]
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19
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Kim YK, Raghupathi KR, Pendery JS, Khomein P, Sridhar U, de Pablo JJ, Thayumanavan S, Abbott NL. Oligomers as Triggers for Responsive Liquid Crystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10092-10101. [PMID: 30064213 DOI: 10.1021/acs.langmuir.8b01944] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report an investigation of the influence of aqueous solutions of amphiphilic oligomers on the ordering of micrometer-thick films of thermotropic liquid crystals (LCs), thus addressing the gap in knowledge arising from previous studies of the interactions of monomeric and polymeric amphiphiles with LCs. Specifically, we synthesized amphiphilic oligomers (with decyl hydrophobic and pentaethylene glycol hydrophilic domains) in monomer, dimer, and trimer forms, and incubated aqueous solutions of the oligomers against nematic films of 4'-pentyl-4-biphenylcarbonitrile (5CB). All amphiphilic oligomers caused sequential surface-driven orientational (planar to homeotropic) and then bulk phase transitions (nematic to isotropic) with dynamics depending strongly on the degree of oligomerization. The dynamics of the orientational transitions accelerated from monomer to trimer, consistent with the effects of an increase in adsorption free energy. The mechanism underlying the orientational transition, however, involved a decrease in anchoring energy and not change in the easy axis of the LC. In contrast, the rate of the phase transition induced by absorption of oligomers into the LC decreased from monomer to trimer, suggesting that constraints on configurational degrees of freedom influence the absorption free energies of the oligomers. Interestingly, the oligomer-induced transition from the nematic to isotropic phase of 5CB was observed to nucleate at the aqueous-5CB interface, consistent with surface-induced disorder underlying the above-reported decrease in anchoring energy caused by the oligomers. Finally, we provided proof-of-concept experiments of the triggering of LCs using a trimeric amphiphile that is photocleaved by UV illumination into monomeric fragments. Overall, our results provide insight into the rational design of oligomers that can be used as triggers to create responsive LCs.
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Affiliation(s)
- Young-Ki Kim
- Department of Chemical and Biological Engineering , University of Wisconsin-Madison , 1415 Engineering Drive , Madison , Wisconsin 53706 , United States
| | - Krishna R Raghupathi
- Department of Chemistry , University of Massachusetts Amherst , 710 North Pleasant Street , Amherst , Massachusetts 01003 , United States
| | - Joel S Pendery
- Department of Chemical and Biological Engineering , University of Wisconsin-Madison , 1415 Engineering Drive , Madison , Wisconsin 53706 , United States
| | - Piyachai Khomein
- Department of Chemistry , University of Massachusetts Amherst , 710 North Pleasant Street , Amherst , Massachusetts 01003 , United States
| | - Uma Sridhar
- Department of Chemistry , University of Massachusetts Amherst , 710 North Pleasant Street , Amherst , Massachusetts 01003 , United States
| | - Juan J de Pablo
- Institute for Molecular Engineering , University of Chicago , Chicago , Illinois 60637 , United States
- Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - S Thayumanavan
- Department of Chemistry , University of Massachusetts Amherst , 710 North Pleasant Street , Amherst , Massachusetts 01003 , United States
| | - Nicholas L Abbott
- Department of Chemical and Biological Engineering , University of Wisconsin-Madison , 1415 Engineering Drive , Madison , Wisconsin 53706 , United States
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20
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Li X, Hong EYH, Chan AKW, Poon CT, Li B, Wu L, Yam VWW. Amphiphilic Carbazole-Containing Compounds with Lower Critical Solution Temperature Behavior for Supramolecular Self-Assembly and Solution-Processable Resistive Memories. Chem Asian J 2018; 13:2626-2631. [PMID: 30094922 DOI: 10.1002/asia.201800615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Indexed: 12/12/2022]
Abstract
The self-organization and resistive memory performances of a series of newly synthesized water-soluble amphiphilic carbazole derivatives have been explored. Temperature-dependent UV/Vis absorption spectroscopy has been conducted to study the isodesmic self-assembly mechanism of the carbazole-containing compounds. This class of compounds also exhibits interesting lower critical solution temperature properties, which are sensitive to concentration and ionic additives. One of the compounds has been solution-processed and utilized as an active material in the engineering of resistive memory devices, exhibiting a switching voltage of about 3.9 V, a constant ON/OFF current ratio of 106 , and a long retention time of 104 s. The present work demonstrates the versatile potential applications of water-soluble amphiphilic carbazole-containing compounds in supramolecular chemistry and resistive memory devices.
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Affiliation(s)
- Xiaoying Li
- State Key Laboratory of Supramolecular Structure, and Materials and College of Chemistry, Jilin University, Changchun, 130012, P. R. China.,Institute of Molecular Functional Materials [Areas of Excellence, Scheme University Grant Committee (Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Eugene Yau-Hin Hong
- Institute of Molecular Functional Materials [Areas of Excellence, Scheme University Grant Committee (Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Alan Kwun-Wa Chan
- Institute of Molecular Functional Materials [Areas of Excellence, Scheme University Grant Committee (Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Chun-Ting Poon
- Institute of Molecular Functional Materials [Areas of Excellence, Scheme University Grant Committee (Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Bao Li
- State Key Laboratory of Supramolecular Structure, and Materials and College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure, and Materials and College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Vivian Wing-Wah Yam
- State Key Laboratory of Supramolecular Structure, and Materials and College of Chemistry, Jilin University, Changchun, 130012, P. R. China.,Institute of Molecular Functional Materials [Areas of Excellence, Scheme University Grant Committee (Hong Kong)], and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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21
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22
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Sikder A, Ray D, Aswal VK, Ghosh S. Stimuli-Responsive Directional Vesicular Assembly with Tunable Surface Functionality and Impact on Enzyme Inhibition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:868-875. [PMID: 28742972 DOI: 10.1021/acs.langmuir.7b01652] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The article describes the self-assembly of a series of unsymmetrical bola-shaped π-amphiphiles (NDI-1, NDI-1a, NDI-2, NDI-3, and NDI-4) consisting of a hydrophobic naphthalene-diimide (NDI) chromophore attached to a nonionic hydrophilic wedge and an anionic headgroup in the two opposite arms of the central NDI. By design, only a single hydrazide group is linked either on the ionic or nonionic arm of the NDI. NDI-1 and NDI-1a are regioisomers differing only in the location of the hydrazide group, placed in the nonionic or ionic arm, respectively. NDI-2, NDI-3, and NDI-4 are similar to NDI-1 in the placement of the hydrazide group but differ in the nature of the ionic headgroups. Except for NDI-2, all of them exhibit spontaneous vesicle structures in water (pH 9.0) as established by electron microscopy, small-angle neutron scattering, dynamic light scattering, and spectroscopy studies. Supramolecularly assembled oligo-oxyethylene chains of the hydrophobic wedge exhibited a lower critical solution temperature (LCST) at ∼40 °C, similar to that of covalent polymers. Consequently, above the LCST, the bola-amphiphile was converted to a single headgroup surfactant, resulting in the collapse of the vesicular structure to nanoparticles. In all examples, the dominant H-bonding force among the hydrazide groups resulted in unidirectional orientation, leading to the formation of a nonsymmetric membrane with the H-bonded chain located at the inner wall. Therefore, the functional group displayed in these vesicles could be fully dictated by the location of the hydrazide group. Thus, for NDI-1, NDI-3, or NDI-4, the hydrazide group, located at the nonionic arm, directed the nonionic wedge to converge at the inner wall of the vesicle by displaying the anionic headgroups toward the outer surface. In contrast, NDI-1a formed a nonionic vesicle because in this case anionic headgroups were located at the inner wall of the membrane. Furthermore, among NDI-1, NDI-3, and NDI-4, the charge density of the anionic surface and accordingly the radius of curvature and particle size could be tuned precisely as a function of the extent of charge delocalization in the phenoxide or carboxylate headgroup. These distinct self-assembly modes resulted in very different abilities of these vesicles for electrostatic-interaction-driven biomolecular recognition, which was studied by testing their ability to bind with cationic protein chymotripsin and inhibit its enzymatic activity. The enzyme inhibition ability followed the order NDI-1 > NDI-3 > NDI-4 > NDI-2 ≈ NDI-1a, which could be rationalized by their distinct functional group display and surface charge density factors.
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Affiliation(s)
- Amrita Sikder
- Polymer Science Unit, Indian Association for the Cultivation of Science, Kolkata, India 700032
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre , Mumbai, India 400085
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre , Mumbai, India 400085
| | - Suhrit Ghosh
- Polymer Science Unit, Indian Association for the Cultivation of Science, Kolkata, India 700032
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23
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Yotsuji H, Higashiguchi K, Sato R, Shigeta Y, Matsuda K. Phototransformative Supramolecular Assembly of Amphiphilic Diarylethenes Realized by a Combination of Photochromism and Lower Critical Solution Temperature Behavior. Chemistry 2017; 23:15059-15066. [PMID: 28696577 DOI: 10.1002/chem.201702202] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Indexed: 12/20/2022]
Abstract
Amphiphilic diarylethenes bearing octyloxycarbonyl and N-octylcarbamoyl groups have been designed and synthesized. These ester- and amide-linked compounds form micrometer-sized supramolecular assemblies in water, and these assemblies exhibit photoinduced macroscopic morphological transformations upon alternate irradiation with UV and visible light. The ester-linked diarylethene showed a transformation between colorless spheres and a red-purple hazy fringe, whereas the microspheres of the amide-linked diarylethene showed changes in color, size, and shape, but the spheres did not show division. TEM images revealed that the spheres of the open-ring isomers have coacervate structures, with bicontinuous aqueous and organic phases. The closed-ring isomers of the ester- and amide-linked compounds were found to form nanofibers and thin layers, respectively. These compounds showed absorption spectral shifts at temperatures corresponding to the lower critical solution temperature (LCST) transition. This morphological transformation can be rationalized as the photoinduced phase transition between the high- and low-temperature phases of the LCST transition. These results open up a new avenue for the design of phototransformative supramolecular assemblies based on a combination of photochromism and LCST behavior.
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Affiliation(s)
- Hajime Yotsuji
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, Japan
| | - Kenji Higashiguchi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, Japan.,PRESTO Japan Science and Technology Agency, Honcyo 4-1-8, Kawaguchi, Saitama, Japan
| | - Ryuma Sato
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - Yasuteru Shigeta
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - Kenji Matsuda
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, Japan
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24
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Ji Y, Qiao H, He J, Li W, Chen R, Wang J, Wu L, Hu R, Duan J, Chen Z. Functional oligopeptide as a novel strategy for drug delivery. J Drug Target 2017; 25:597-607. [DOI: 10.1080/1061186x.2017.1309044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yujie Ji
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Hongzhi Qiao
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Jiayu He
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Weidong Li
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Rui Chen
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Jingjing Wang
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Li Wu
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Rongfeng Hu
- Department of Pharmacy, Anhui University of Chinese Medicine, Anhui, PR China
| | - Jinao Duan
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Zhipeng Chen
- Department of Pharmacy, Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, PR China
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25
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Cui J, Kwon JE, Kim HJ, Whang DR, Park SY. Smart Fluorescent Nanoparticles in Water Showing Temperature-Dependent Ratiometric Fluorescence Color Change. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2883-2890. [PMID: 28026932 DOI: 10.1021/acsami.6b13818] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We synthesized two different amphiphilic small molecules 1 and 2 by attaching the same oligo(ethylene glycol) (OEG) unit to the same dicyanodistyrylbenzene (DCS) fluorophore but at different positions. These molecules self-assemble into nanoparticles in water and show lower critical solution temperature (LCST) at 26 and 58 °C, respectively. Upon heating, the transition of hydrophilic coils to hydrophobic globules of the OEG unit leads to the change in the stacking structure of the luminescent DCS cores. As a result, it shows significant ratiometric fluorescence color changes from excimeric yellow emission to monomer-dominated green emission. Interestingly, the coassembly of 1 and 2 exhibits single transition temperature between the transition temperatures of the two components. Moreover, it is demonstrated that the transition temperature of the coassembly is delicately tuned over 26-58 °C by varying the molar mixing ratio of them.
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Affiliation(s)
- Junjie Cui
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Ji Eon Kwon
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Hyeong-Ju Kim
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Dong Ryeol Whang
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Soo Young Park
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
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26
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Wu M, Zhu Y, Jiang W. Release Behavior of Polymeric Vesicles in Solution Controlled by External Electrostatic Field. ACS Macro Lett 2016; 5:1212-1216. [PMID: 35614747 DOI: 10.1021/acsmacrolett.6b00699] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We found that the polymeric vesicles from the self-assembly of amphiphilic block copolymer polystyrene-block-poly(acrylic acid) (PS144-b-PAA22) in the dioxane/water mixture can be deformed, broken and finally divided into smaller ones via the external electrostatic field. The higher the electrostatic field intensity, the smaller the vesicles. More importantly, this fission phenomenon induced by electrostatic field can be used to control the release behavior of the vesicles. Our experimental results show that the Nile Red (NR) molecules encapsulated inside the cavity of vesicles can be accurately released by controlling the electrostatic field intensity and the release time. These findings not only enrich the knowledge for the external field induced transformation of polymer structures, but also provide a new and highly convenient approach for the controllable release of polymersomes in solution.
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Affiliation(s)
- Ming Wu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University
of
Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Yutian Zhu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Wei Jiang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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Görl D, Soberats B, Herbst S, Stepanenko V, Würthner F. Perylene bisimide hydrogels and lyotropic liquid crystals with temperature-responsive color change. Chem Sci 2016; 7:6786-6790. [PMID: 28451124 PMCID: PMC5356028 DOI: 10.1039/c6sc02249a] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/13/2016] [Indexed: 12/14/2022] Open
Abstract
The self-assembly of perylene bisimide (PBI) dyes bearing oligo ethylene glycol (OEG) units in water affords responsive functional nanostructures characterized by their lower critical solution temperature (LCST). Tuning of the LCST is realized by a supramolecular approach that relies on two structurally closely related PBI-OEG molecules. The two PBIs socially co-assemble in water and the resulting nanostructures exhibit a single LCST in between the transition temperatures of the aggregates formed by single components. This permits to precisely tune the transition from a hydrogel to a lyotropic liquid crystal state at temperatures between 26 and 51 °C by adjusting the molar fraction of the two PBIs. Owing to concomitant changes in PBI-PBI interactions this phase transition affords a pronounced color change with "fluorescence-on" response that can be utilized as a smart temperature sensory system.
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Affiliation(s)
- Daniel Görl
- Institut für Organische Chemie & Center for Nanosystems Chemistry , Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Bartolome Soberats
- Institut für Organische Chemie & Center for Nanosystems Chemistry , Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Stefanie Herbst
- Institut für Organische Chemie & Center for Nanosystems Chemistry , Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Vladimir Stepanenko
- Institut für Organische Chemie & Center for Nanosystems Chemistry , Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Frank Würthner
- Institut für Organische Chemie & Center for Nanosystems Chemistry , Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
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Munkhbat O, Garzoni M, Raghupathi KR, Pavan GM, Thayumanavan S. Role of Aromatic Interactions in Temperature-Sensitive Amphiphilic Supramolecular Assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2874-81. [PMID: 26938461 PMCID: PMC4913888 DOI: 10.1021/acs.langmuir.5b04540] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Aromatic interactions were found to greatly influence the temperature-dependent dynamic behavior within supramolecular assemblies. Using an amphiphilic dendron, we systematically changed the hydrophobic groups introducing increasing levels of aromaticity while keeping the hydrophilic part constant. We show that the supramolecular assemblies become less sensitive to temperature changes when aromatic interactions in the aggregate are increased. Conversely, the absence of aromaticity in the hydrophobic moieties produces temperature-sensitive aggregates. These results show that subtle molecular-level interactions can be utilized to control temperature-sensitive behavior in the nanoscale. These findings open up new design strategies to rationally tune the behavior of stimuli-responsive supramolecular assemblies on multiple spatiotemporal scales.
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Affiliation(s)
- Oyuntuya Munkhbat
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003, United States
| | - Matteo Garzoni
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Manno 6928, Switzerland
| | - Krishna R. Raghupathi
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003, United States
| | - Giovanni M. Pavan
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Manno 6928, Switzerland
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003, United States
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