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Xu G, Liu K, Xu B, Yao Y, Li W, Yan J, Zhang A. Confined Microenvironments from Thermoresponsive Dendronized Polymers. Macromol Rapid Commun 2020; 41:e2000325. [PMID: 32639094 DOI: 10.1002/marc.202000325] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 06/23/2020] [Indexed: 11/07/2022]
Abstract
Confined microenvironments in biomacromolecules arising from molecular crowding account for their well-defined biofunctions and bioactivities. To mimick this, synthetic polymers to form confined structures or microenvironments are of key scientific value, which have received significant attention recently. To create synthetic confined microenvironments, molecular crowding effects and topological cooperative effects have been applied successfully, and the key is balance between self-association of structural units and self-repulsion from crowding-induced steric hindrance. In this article, formation of confined microenvironments from stimuli-responsive dendronized polymers carrying densely dendritic oligoethylene glycols (OEGs) moieties in their pendants is presented. These wormlike thick macromolecules exhibit characteristic thermoresponsive properties, which can provide constrained microenvironments to encapsulate effectively guest molecules including dyes, proteins, or nucleic acids to prevent their protonation or biodegradation. This efficient shielding effect can also mediate chemical reactions in aqueous phase, and even enhance chirality transferring efficiency. All of these can be switched off simply through the thermally-induced dehydration and collapse of OEG dendrons due to the amphiphilicity of OEG chains. Furthermore, the switchable encapsulation and release of guests can be greatly enhanced when these dendronized polymers are used as major constituents for fabricating bulk hydrogels or nanogels, which provide a higher-level confinement.
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Affiliation(s)
- Gang Xu
- International Joint Laboratory of Smart and Biomimetic Polymers, School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Kun Liu
- International Joint Laboratory of Smart and Biomimetic Polymers, School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Biyi Xu
- International Joint Laboratory of Smart and Biomimetic Polymers, School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Yi Yao
- International Joint Laboratory of Smart and Biomimetic Polymers, School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Wen Li
- International Joint Laboratory of Smart and Biomimetic Polymers, School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Jiatao Yan
- International Joint Laboratory of Smart and Biomimetic Polymers, School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Afang Zhang
- International Joint Laboratory of Smart and Biomimetic Polymers, School of Materials Science and Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
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Luo Z, Zhang A, Chen Y, Shen Z, Cui S. How Big Is Big Enough? Effect of Length and Shape of Side Chains on the Single-Chain Enthalpic Elasticity of a Macromolecule. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00247] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Zhonglong Luo
- Key
Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China
| | - Afang Zhang
- Department
of Polymer Materials, College of Materials Science and Engineering, Shanghai University, Nanchen Road 333, Shanghai 200444, China
| | - Yongming Chen
- School
of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhihao Shen
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, Center for Soft Matter
Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Shuxun Cui
- Key
Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China
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Kumari M, Gupta S, Achazi K, Böttcher C, Khandare J, Sharma SK, Haag R. Dendronized Multifunctional Amphiphilic Polymers as Efficient Nanocarriers for Biomedical Applications. Macromol Rapid Commun 2014; 36:254-61. [DOI: 10.1002/marc.201400467] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 10/01/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Meena Kumari
- Department of Chemistry; University of Delhi; Delhi 110007 India
| | - Shilpi Gupta
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustrasse 3 14195 Berlin Germany
- Department of Chemistry; Hindu College; Sonipat 131001 Haryana India
| | - Katharina Achazi
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustrasse 3 14195 Berlin Germany
| | - Christoph Böttcher
- Forschungszentrum für Elektronenmikroskopie; Institut für Chemie und Biochemie; Freie Universität Berlin; Fabeckstraße 36a 14195 Berlin Germany
| | | | - Sunil K. Sharma
- Department of Chemistry; University of Delhi; Delhi 110007 India
| | - Rainer Haag
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustrasse 3 14195 Berlin Germany
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Sun X, Lindner JP, Bruchmann B, Schlüter AD. Synthesis of Neutral, Water-Soluble Oligo–Ethylene Glycol-Containing Dendronized Homo- and Copolymers of Generations 1, 1.5, 2, and 3. Macromolecules 2014. [DOI: 10.1021/ma5017192] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xiaoyu Sun
- Institute
of Polymers, Department of Materials, ETH Zurich, HCI J 541 Vladimir-Prelog-Weg 5, Hönggerberg
Campus, CH 8093 Zurich, Switzerland
- JONAS—Joint Research Network on Advanced Materials and Systems—The European Post Doc Initiative of BASF and Academia, Carl-Bosch-Strasse 38, 67056 Ludwigshafen, Germany
| | - Jean-Pierre Lindner
- Advanced
Materials and Systems Research, BASF SE, Carl-Bosch-Strasse 38, 67056 Ludwigshafen, Germany
| | - Bernd Bruchmann
- JONAS—Joint Research Network on Advanced Materials and Systems—The European Post Doc Initiative of BASF and Academia, Carl-Bosch-Strasse 38, 67056 Ludwigshafen, Germany
- Advanced
Materials and Systems Research, BASF SE, Carl-Bosch-Strasse 38, 67056 Ludwigshafen, Germany
| | - A. Dieter Schlüter
- Institute
of Polymers, Department of Materials, ETH Zurich, HCI J 541 Vladimir-Prelog-Weg 5, Hönggerberg
Campus, CH 8093 Zurich, Switzerland
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Kumari M, Singh AK, Kumar S, Achazi K, Gupta S, Haag R, Sharma SK. Synthesis of amphiphilic dendronized polymers to study their self-assembly and transport behavior. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3293] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Meena Kumari
- Department of Chemistry; University of Delhi; Delhi 110 007 India
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustraße 3 14195 Berlin Germany
| | | | - Shiv Kumar
- Department of Chemistry; University of Delhi; Delhi 110 007 India
| | - Katharina Achazi
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustraße 3 14195 Berlin Germany
| | - Shilpi Gupta
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustraße 3 14195 Berlin Germany
- Department of Chemistry; Hindu College; Sonipat-131001 Haryana India
| | - Rainer Haag
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustraße 3 14195 Berlin Germany
| | - Sunil K. Sharma
- Department of Chemistry; University of Delhi; Delhi 110 007 India
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Fan WW, Fan XD, Tian W, Zhang X, Wang G, Zhang WB, Bai Y, Zhu XZ. Phase transition dynamics and mechanism for backbone-thermoresponsive hyperbranched polyethers. Polym Chem 2014. [DOI: 10.1039/c4py00155a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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