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Zhou J, Shi D, Kaneko T, Dong W, Chen M. Regulating Electrostatic Interactions toward Thermoresponsive Hydrogels with Low Critical Solution Temperature. Macromol Rapid Commun 2024; 45:e2300488. [PMID: 37793367 DOI: 10.1002/marc.202300488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/18/2023] [Indexed: 10/06/2023]
Abstract
Low critical solution temperature (LCST) of commonly used thermoresponsive polymers in water is basically dominated by hydrophobic interactions. Herein, a novel thermoresponsive system based on electrostatic interactions is reported. By simply loading aluminum chloride (AlCl3 ) into non-responsive poly(2-hydroxyethyl acrylate) (PHEA) hydrogels, PHEA-Al gels turn to have reversible thermoresponsive behavior between transparent and opaque without any volume change. Further investigations by changing metal ion-polymer compositions unravel the necessity of specific electrostatic interactions, namely, cation-dipole bonding interactions between hydroxy groups and trivalent metal ions. The thermoresponsive hydrogel demonstrates high transparency (≈95%), excellent luminous modulation capability (>98%), and cyclic reliability, suggesting great potential as an energy-saving material. Although LCST control by salt addition is widely known, salt-induced expression of thermoresponsiveness has barely been discussed before. This design provides a new approach of easy fabrication, low cost, and scalability to develop stimuli-responsive materials.
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Affiliation(s)
- Jiahua Zhou
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Dongjian Shi
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Tatsuo Kaneko
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Weifu Dong
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Mingqing Chen
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
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Polyethylenimine polyampholytes: Synthesis, characterization and dye adsorption study. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03074-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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3
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Amirova A, Kirila T, Kurlykin M, Tenkovtsev A, Filippov A. Influence of Cross-Linking Degree on Hydrodynamic Behavior and Stimulus-Sensitivity of Derivatives of Branched Polyethyleneimine. Polymers (Basel) 2020; 12:polym12051085. [PMID: 32397458 PMCID: PMC7284568 DOI: 10.3390/polym12051085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022] Open
Abstract
Cross-linked derivatives of acylated branched polyethyleneimine containing 2-isopropyl-2-oxazoline units were investigated in chloroform and aqueous solutions using methods of molecular hydrodynamics, static and dynamic light scattering, and turbidity. The studied samples differed by the cross-linker content. The solubility of the polyethyleneimines studied worsened with the increasing mole fraction of the cross-linker. Cross-linked polyethyleneimines were characterized by small dimensions in comparison with linear analogs; the increase in the cross-linker content leads to a growth of intramolecular density. At low temperatures, the aqueous solutions of investigated samples were molecularly dispersed, and the large aggregates were formed due to the dehydration of oxazoline units and the formation of intermolecular hydrogen bonds. For the cross-linked polyethyleneimines, the phase separation temperatures were lower than that for linear and star-shaped poly-2-isopropyl-2-oxazolines. The low critical solution temperature of the solutions of studied polymers decreased with the increasing cross-linker mole fraction. The time of establishment of the constant characteristics of the studied solutions after the jump-like change in temperature reaches 3000 s, which is at least two times longer than for linear polymers.
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4
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The direct synthesis of sulfobetaine-containing amphiphilic block copolymers and their self-assembly behavior. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.09.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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5
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Lin S, Shang J, Theato P. CO2-Triggered UCST transition of amphiphilic triblock copolymers and their self-assemblies. Polym Chem 2017. [DOI: 10.1039/c7py00186j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Self-assembled vesicles presenting morphological transformations (vesicles–micelles–unimers) upon external stimuli due to their CO2 adjustable UCST behavior in aqueous solution.
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Affiliation(s)
- Shaojian Lin
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
| | - Jiaojiao Shang
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
| | - Patrick Theato
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
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6
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Abstract
This review summarizes pH-responsive monomers, polymers and their derivative nano- and micro-structures including micelles, cross-linked micelles, microgels and hydrogels.
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Affiliation(s)
- G. Kocak
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
| | - C. Tuncer
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
| | - V. Bütün
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
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Mok Y, Noh M, Chan Kim G, Song Y, Kim H, Kim S, Yi S, Seo JH, Lee Y. Light-tunable thermoresponsive behavior of branched polyethylenimine derivatives in water. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Yuan H, Chi H, Yuan W. Ethyl cellulose amphiphilic graft copolymers with LCST-UCST transition: Opposite self-assembly behavior, hydrophilic-hydrophobic surface and tunable crystalline morphologies. Carbohydr Polym 2016; 147:261-271. [DOI: 10.1016/j.carbpol.2016.04.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 03/20/2016] [Accepted: 04/04/2016] [Indexed: 01/10/2023]
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9
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Zhang H, Guo S, Fan W, Zhao Y. Ultrasensitive pH-Induced Water Solubility Switch Using UCST Polymers. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02522] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hu Zhang
- Département
de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
| | - Shengwei Guo
- Département
de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
- School of Material Science & Engineering, Beifang University of Nationalities, Yinchuan, China 750021
| | - Weizheng Fan
- Département
de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
| | - Yue Zhao
- Département
de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
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Noh M, Kang S, Mok Y, Choi SJ, Park J, Kingma J, Seo JH, Lee Y. Upper critical solution temperature (UCST) phase transition of halide salts of branched polyethylenimine and methylated branched polyethylenimine in aqueous solutions. Chem Commun (Camb) 2015; 52:509-12. [PMID: 26530336 DOI: 10.1039/c5cc08005c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The upper critical solution temperature (UCST) phase transition of halide salts of branched polyethylenimine (PEI) and methylated branched polyethylenimine (MPEI) is first reported in aqueous solutions. In particular, iodide counter-ions can introduce UCST properties in MPEI. The importance of the counter-ion composition of MPEI for UCST transition is discussed in detail.
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Affiliation(s)
- Minwoo Noh
- Department of Chemistry, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 151-747, Republic of Korea.
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Doncom KEB, Pitto-Barry A, Willcock H, Lu A, McKenzie BE, Kirby N, O'Reilly RK. Complementary light scattering and synchrotron small-angle X-ray scattering studies of the micelle-to-unimer transition of polysulfobetaines. SOFT MATTER 2015; 11:3666-3676. [PMID: 25811110 DOI: 10.1039/c5sm00602c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AB and ABA di- and triblock copolymers where A is the hydrophilic poly(oligoethylene glycol methacrylate) (POEGMA) block and B is a thermo-responsive sulfobetaine block [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide (PDMAPS) were synthesised by aqueous RAFT polymerisation with narrow dispersity (ĐM ≤ 1.22), as judged by aqueous SEC analysis. The di- and triblock copolymers self-assembled in salt-free water to form micelles with a PDMAPS core and the self-assembly of these polymers was explored by SLS and TEM analysis. The micelles were shown, by DLS analysis, to undergo a micelle-to-unimer transition at a critical temperature, which was dependent upon the length of the POEGMA block. Increasing the length of the third, POEGMA, block decreased the temperature at which the micelle-to-unimer transition occurred as a result of the increased hydrophilicity of the polymer. The dissociation of the micelles was further studied by SLS and synchrotron SAXS. SAXS analysis revealed that the micelle dissociation began at temperatures below that indicated by DLS analysis and that both micelles and unimers coexist. This highlights the importance of using multiple complementary techniques in the analysis of self-assembled structures. In addition the micelle-to-unimer morphology transition was employed to encapsulate and release a hydrophobic dye, Nile Red, as shown by fluorescence spectroscopy.
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Affiliation(s)
- Kay E B Doncom
- University of Warwick, Department of Chemistry, Gibbet Hill Road, Coventry, CV4 7AL, UK.
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12
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Dou Q, Fang X, Jiang S, Chee PL, Lee TC, Loh XJ. Multi-functional fluorescent carbon dots with antibacterial and gene delivery properties. RSC Adv 2015. [DOI: 10.1039/c5ra07968c] [Citation(s) in RCA: 221] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Dual-functionality carbon dots with both anti-microbial and gene transfection abilities were developed and their properties elaborated in this paper.
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Affiliation(s)
- Qingqing Dou
- Institute of Materials Research and Engineering
- A*STAR, (Agency for Science, Technology and Research)
- Singapore 117602
- Singapore
| | - Xiaotian Fang
- Institute of Materials Research and Engineering
- A*STAR, (Agency for Science, Technology and Research)
- Singapore 117602
- Singapore
| | - Shan Jiang
- Institute of Materials Research and Engineering
- A*STAR, (Agency for Science, Technology and Research)
- Singapore 117602
- Singapore
| | - Pei Lin Chee
- Institute of Materials Research and Engineering
- A*STAR, (Agency for Science, Technology and Research)
- Singapore 117602
- Singapore
| | - Tung-Chun Lee
- Institute for Materials Discovery
- University College London
- WC1E 6BT London
- UK
| | - Xian Jun Loh
- Institute of Materials Research and Engineering
- A*STAR, (Agency for Science, Technology and Research)
- Singapore 117602
- Singapore
- Department of Materials Science and Engineering
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13
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Affiliation(s)
- Erno Karjalainen
- Laboratory
of Polymer Chemistry,
Department of Chemistry, University of Helsinki, PB 55, 00014 Helsinki, Finland
| | - Vladimir Aseyev
- Laboratory
of Polymer Chemistry,
Department of Chemistry, University of Helsinki, PB 55, 00014 Helsinki, Finland
| | - Heikki Tenhu
- Laboratory
of Polymer Chemistry,
Department of Chemistry, University of Helsinki, PB 55, 00014 Helsinki, Finland
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