1
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Liu Z, Shi X, Shu W, Qi S, Wang X, He X. The effect of hydration and dehydration on the conformation, assembling behavior and photoluminescence of PBLG. SOFT MATTER 2022; 18:4396-4401. [PMID: 35635105 DOI: 10.1039/d2sm00344a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydration and dehydration play crucial roles in hydrophobic effects (HEs) and are yet to be understood. Poly(γ-benzyl-L-glutamate) (PBLG) homopolymers in THF/water with various water contents were investigated. We discovered that PBLG was hydrated at low water contents and adopted a helical conformation. The chain became dehydrated with increasing water content, which converted the PBLG100 helix to a PPII-helix. The variation in the conformation resulted in an alteration of the self-assembled morphologies from fibers to particles. For PBLG12 with a shorter chain, the chain underwent an α-to-β transition in the conformation due to dehydration as the water content increased, and correspondingly the morphologies varied from tapes to helical ribbons, and eventually to toroids at a higher water content. We also observed that this α-to-β transition is accompanied by an increase in intensity of the fluorescence, which is attributed to the through-space-conjugation of tightly packed phenyl groups within the β-sheet. The discovered effect of hydration and dehydration on the PBLG chain conformation, self-assembling behavior and optical function is essential for the innovation of polypeptide materials and understanding of water-mediated biological systems.
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Affiliation(s)
- Zhen Liu
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
| | - Xinjie Shi
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
| | - Wenchao Shu
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
| | - Shuo Qi
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
| | - Xiaosong Wang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, N21 3G1, Canada.
| | - Xiaohua He
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
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2
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Zhang J, Jin B, Tang G, Luo Y, Li X. Core–Shell Copolymers with Brush-on-Hyperbranched Arm Architecture: Synthesis, Dual Thermoresponsive Behaviors, and Nanocarriers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Bixin Jin
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Gang Tang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yunjun Luo
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Key Laboratory of High Energy Density Materials, Ministry of Education, Beijing Institute of Technology, Beijing 100081, China
| | - Xiaoyu Li
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Key Laboratory of High Energy Density Materials, Ministry of Education, Beijing Institute of Technology, Beijing 100081, China
- Experimental Center of Advanced Materials, Beijing Institute of Technology, Beijing 100081, China
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3
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Synthesis of poly(Asparagine-co-phenylalanine) copolymers, analogy with thermosensitive poly(acrylamide-co-styrene) copolymers and formation of PEGylated nanoparticles. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Cao H, Guo F, Chen Z, Kong XZ. Preparation of Thermoresponsive Polymer Nanogels of Oligo(Ethylene Glycol) Diacrylate-Methacrylic Acid and Their Property Characterization. NANOSCALE RESEARCH LETTERS 2018; 13:209. [PMID: 30006818 PMCID: PMC6045526 DOI: 10.1186/s11671-018-2610-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 06/25/2018] [Indexed: 06/08/2023]
Abstract
Stimuli-responsive polymers have received growing attention in recent years owing to their wide applications in diverse fields. A novel stimuli-responsive polymer, based on oligo(ethylene glycol) diacrylate (OEGDA) and methacrylic acid (MAA), P(OEGDA-MAA), is prepared by precipitation polymerization and is shown to have a LCST-type VPTT (volume phase transition temperature) at 33 °C in water and a UCST-type VPTT at 43 °C in ethanol, all at concentration of 1 mg/mL. Both VPTTs are strongly concentration and pH dependent, providing an easy way to tune the phase transition temperature. The polymer is characterized with regard to its composition and its morphology in water and in ethanol at different concentration. The two transitions are studied and interpreted based on the results. This work provides a novel way for the preparation of a new type of stimuli-responsive polymer with great potential for different applications, particularly those in biomedical areas because PEG-based stimuli-responsive polymers are known to be nontoxic and non-immunogenic.
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Affiliation(s)
- Hongyan Cao
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022 China
| | - Fenghao Guo
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022 China
| | - Zhiyong Chen
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022 China
| | - Xiang Zheng Kong
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022 China
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5
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Taylor MJ, Tomlins P, Sahota TS. Thermoresponsive Gels. Gels 2017; 3:E4. [PMID: 30920501 PMCID: PMC6318636 DOI: 10.3390/gels3010004] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/14/2016] [Accepted: 12/16/2016] [Indexed: 01/08/2023] Open
Abstract
Thermoresponsive gelling materials constructed from natural and synthetic polymers can be used to provide triggered action and therefore customised products such as drug delivery and regenerative medicine types as well as for other industries. Some materials give Arrhenius-type viscosity changes based on coil to globule transitions. Others produce more counterintuitive responses to temperature change because of agglomeration induced by enthalpic or entropic drivers. Extensive covalent crosslinking superimposes complexity of response and the upper and lower critical solution temperatures can translate to critical volume temperatures for these swellable but insoluble gels. Their structure and volume response confer advantages for actuation though they lack robustness. Dynamic covalent bonding has created an intermediate category where shape moulding and self-healing variants are useful for several platforms. Developing synthesis methodology-for example, Reversible Addition Fragmentation chain Transfer (RAFT) and Atomic Transfer Radical Polymerisation (ATRP)-provides an almost infinite range of materials that can be used for many of these gelling systems. For those that self-assemble into micelle systems that can gel, the upper and lower critical solution temperatures (UCST and LCST) are analogous to those for simpler dispersible polymers. However, the tuned hydrophobic-hydrophilic balance plus the introduction of additional pH-sensitivity and, for instance, thermochromic response, open the potential for coupled mechanisms to create complex drug targeting effects at the cellular level.
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Affiliation(s)
- M Joan Taylor
- INsmart group, School of Pharmacy Faculty of Health & Life Sciences, De Montfort University, Leicester, LE1 9BH, UK.
| | - Paul Tomlins
- INsmart group, School of Pharmacy Faculty of Health & Life Sciences, De Montfort University, Leicester, LE1 9BH, UK.
| | - Tarsem S Sahota
- INsmart group, School of Pharmacy Faculty of Health & Life Sciences, De Montfort University, Leicester, LE1 9BH, UK.
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6
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Asadujjaman A, Ahmadi V, Yalcin M, ten Brummelhuis N, Bertin A. Thermoresponsive functional polymers based on 2,6-diaminopyridine motif with tunable UCST behaviour in water/alcohol mixtures. Polym Chem 2017. [DOI: 10.1039/c7py00539c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two thermoresponsive polyacrylamides based on the 2,6-diaminopyridine motif were synthesized and their UCST-type reversible thermoresponsive behaviour was studied in water/alcohol mixtures.
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Affiliation(s)
- Asad Asadujjaman
- Bundesanstalt für Materialforschung und –prüfung (BAM)
- 12205 Berlin
- Germany
| | - Vahid Ahmadi
- Bundesanstalt für Materialforschung und –prüfung (BAM)
- 12205 Berlin
- Germany
| | - Meral Yalcin
- Humboldt-Universität zu Berlin
- Department of Chemistry
- 12489 Berlin
- Germany
| | | | - Annabelle Bertin
- Bundesanstalt für Materialforschung und –prüfung (BAM)
- 12205 Berlin
- Germany
- Freie Universität Berlin
- Institute of Chemistry and Biochemistry–Organic Chemistry
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7
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Ge C, Zhao L, Ling Y, Tang H. Thermo and pH dual responsive polypeptides derived from “clickable” poly(γ-3-methylthiopropyl-l-glutamate). Polym Chem 2017. [DOI: 10.1039/c7py00170c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Thermo and pH dual responsive polypeptides bearing sulfonium linkages and ammonium pendants were prepared from “clickable” thioether-containing polypeptides.
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Affiliation(s)
- Chenglong Ge
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
| | - Liang Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
| | - Ying Ling
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
| | - Haoyu Tang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
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8
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Zhu M, Liu W, Xiao J, Ling Y, Tang H. Synthesis and UCST-type phase behaviors of OEGylated random copolypeptides in alcoholic solvents. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Mengxiang Zhu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Wenjun Liu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Jiang Xiao
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Ying Ling
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
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Liu W, Zhu M, Xiao J, Ling Y, Tang H. Synthesis and UCST-type phase behavior of polypeptide with alkyl side-chains in alcohol or ethanol/water solvent mixtures. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28230] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wenjun Liu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan, Hunan 411105 China
| | - Mengxiang Zhu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan, Hunan 411105 China
| | - Jiang Xiao
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan, Hunan 411105 China
| | - Ying Ling
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan, Hunan 411105 China
| | - Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan, Hunan 411105 China
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10
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Ge C, Liu S, Liang C, Ling Y, Tang H. Synthesis and UCST-type phase behavior of α-helical polypeptides with Y-shaped and imidazolium pendants. Polym Chem 2016. [DOI: 10.1039/c6py01287f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
UCST-type thermoresponsive polypeptides with Y-shaped and ionic liquid pendants were synthesized by a multi-step post-polymerization method.
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Affiliation(s)
- Chenglong Ge
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan
| | - Sheng Liu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan
| | - Ce Liang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan
| | - Ying Ling
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan
| | - Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province
- Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province
- College of Chemistry
- Xiangtan University
- Xiangtan
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