1
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Murdoch TJ, Quienne B, Pinaud J, Caillol S, Martín-Fabiani I. Understanding associative polymer self-assembly with shrinking gate fluorescence correlation spectroscopy. NANOSCALE 2024; 16:12660-12669. [PMID: 38888295 DOI: 10.1039/d4nr00737a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
The self-assembly of polymers is integral to their role in liquid formulations. In this study, we combine a dye whose lifetime is sensitive to the nanoviscosity of its local environment with shrinking gate fluorescence correlation spectroscopy (sgFCS) to study the self-assembly of a model telechelic polymer, hydrophobically modified ethoxylated urethane (HEUR). Fluorescence lifetime measurements show a monotonic increase in average lifetime with increasing HEUR concentration driven by a small fraction of dye (<1%) with long lifetimes strongly bound to HEUR. Despite this small fraction, sgFCS isolates the diffusional dynamics of the bound fraction with no a priori assumptions as to the distribution of lifetimes. Sensitivity is greatly enhanced compared to standard FCS, revealing micellar aggregates forming between 0.2 and 1 wt% followed by formation of a percolated network. This sgFCS approach, which we apply for the first time to polymers in this work, is readily extendable to any dye that changes lifetime on binding.
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Affiliation(s)
- Timothy J Murdoch
- Department of Materials, Loughborough University, LE11 1RJ Loughborough, UK.
| | | | - Julien Pinaud
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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2
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Gu C, Du Z, Ouyang X, Xiang H, Zhu M, Luo J, LIU G. Pinching Dynamics of Telechelic Associating and Coupling Polymers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Changpeng Gu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhukang Du
- Dongguan Computer Center, Dongguan 523000, China
| | - Xikai Ouyang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Hengxue Xiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Meifang Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Jintian Luo
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - GengXin LIU
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
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3
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Zhang Z, Xie Z, Nie C, Wu S. Photo-controlled properties and functions of azobenzene-terminated polymers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Larson RG, Van Dyk AK, Chatterjee T, Ginzburg VV. Associative Thickeners for Waterborne Paints: Structure, Characterization, Rheology, and Modeling. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Du Z, Guan T, Luo J, Sun N, Ren B. Light-Induced In Situ Chain Extension and Critical Gelation of Benzophenone End-Functionalized Telechelic Associative Polymers in Aqueous Solution. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhukang Du
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Tao Guan
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jintian Luo
- Center for Advanced Low Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Ning Sun
- Department of Material Technology, Jiangmen Polytechnic, Jiangmen 529090, China
| | - Biye Ren
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, China
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6
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7
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Ludwanowski S, Skarsetz O, Creusen G, Hoenders D, Straub P, Walther A. Wavelength-Gated Adaptation of Hydrogel Properties via Photo-Dynamic Multivalency in Associative Star Polymers. Angew Chem Int Ed Engl 2021; 60:4358-4367. [PMID: 33180989 PMCID: PMC7898538 DOI: 10.1002/anie.202011592] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/23/2020] [Indexed: 01/07/2023]
Abstract
Responsive materials, such as switchable hydrogels, have been largely engineered for maximum changes between two states. In contrast, adaptive systems target distinct functional plateaus between these maxima. Here, we demonstrate how the photostationary state (PSS) of an E/Z-arylazopyrazole photoswitch can be tuned by the incident wavelength across a wide color spectrum, and how this behavior can be exploited to engineer the photo-dynamic mechanical properties of hydrogels based on multivalent photoswitchable interactions. We show that these hydrogels adapt to the wavelength-dependent PSS and the number of arylazopyrazole units by programmable relationships. Hence, our material design enables the facile adjustment of the mechanical properties without laborious synthetic efforts. The concept goes beyond the classical switching from state A to B, and demonstrates pathways for a truly wavelength-gated adaptation of hydrogel properties potentially useful to engineer cell fate or in soft robotics.
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Affiliation(s)
- Simon Ludwanowski
- ABMS Lab—Active, Adaptive and Autonomous Bioinspired MaterialsInstitute for Macromolecular ChemistryUniversity of FreiburgStefan-Meier-Straße 3179104FreiburgGermany
- Freiburg Materials Research Center (FMF)University of FreiburgStefan-Meier-Straße 2179104FreiburgGermany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT)University of FreiburgGeorges-Köhler-Allee 10579110FreiburgGermany
| | - Oliver Skarsetz
- ABMS Lab—Active, Adaptive and Autonomous Bioinspired MaterialsInstitute for Macromolecular ChemistryUniversity of FreiburgStefan-Meier-Straße 3179104FreiburgGermany
- Freiburg Materials Research Center (FMF)University of FreiburgStefan-Meier-Straße 2179104FreiburgGermany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT)University of FreiburgGeorges-Köhler-Allee 10579110FreiburgGermany
| | - Guido Creusen
- ABMS Lab—Active, Adaptive and Autonomous Bioinspired MaterialsInstitute for Macromolecular ChemistryUniversity of FreiburgStefan-Meier-Straße 3179104FreiburgGermany
- Freiburg Materials Research Center (FMF)University of FreiburgStefan-Meier-Straße 2179104FreiburgGermany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT)University of FreiburgGeorges-Köhler-Allee 10579110FreiburgGermany
| | - Daniel Hoenders
- ABMS Lab—Active, Adaptive and Autonomous Bioinspired MaterialsInstitute for Macromolecular ChemistryUniversity of FreiburgStefan-Meier-Straße 3179104FreiburgGermany
- Freiburg Materials Research Center (FMF)University of FreiburgStefan-Meier-Straße 2179104FreiburgGermany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT)University of FreiburgGeorges-Köhler-Allee 10579110FreiburgGermany
- ABMS Lab—Active, Adaptive and Autonomous Bioinspired MaterialsDepartment of ChemistryUniversity of MainzDuesbergweg 10–1455128MainzGermany
| | - Paula Straub
- ABMS Lab—Active, Adaptive and Autonomous Bioinspired MaterialsInstitute for Macromolecular ChemistryUniversity of FreiburgStefan-Meier-Straße 3179104FreiburgGermany
- Freiburg Materials Research Center (FMF)University of FreiburgStefan-Meier-Straße 2179104FreiburgGermany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT)University of FreiburgGeorges-Köhler-Allee 10579110FreiburgGermany
- Cluster of Excellence livMatS @ FIT—Freiburg Center for Interactive Materials and Bioinspired TechnologiesUniversity of FreiburgGeorges-Köhler-Allee 10579110FreiburgGermany
| | - Andreas Walther
- ABMS Lab—Active, Adaptive and Autonomous Bioinspired MaterialsInstitute for Macromolecular ChemistryUniversity of FreiburgStefan-Meier-Straße 3179104FreiburgGermany
- Freiburg Materials Research Center (FMF)University of FreiburgStefan-Meier-Straße 2179104FreiburgGermany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT)University of FreiburgGeorges-Köhler-Allee 10579110FreiburgGermany
- Cluster of Excellence livMatS @ FIT—Freiburg Center for Interactive Materials and Bioinspired TechnologiesUniversity of FreiburgGeorges-Köhler-Allee 10579110FreiburgGermany
- ABMS Lab—Active, Adaptive and Autonomous Bioinspired MaterialsDepartment of ChemistryUniversity of MainzDuesbergweg 10–1455128MainzGermany
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8
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Ludwanowski S, Skarsetz O, Creusen G, Hoenders D, Straub P, Walther A. Wellenlängengesteuerte Adaption der Hydrogeleigenschaften durch Photodynamische Multivalenz in Assoziierenden Sternpolymeren. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Simon Ludwanowski
- A3BMS Lab – Aktive, Adaptive and Autonome Bioinspirierte Materialen Institut für Makromolekulare Chemie Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 31 79104 Freiburg Deutschland
- Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 21 79104 Freiburg Deutschland
- Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien (FIT) Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 105 79110 Freiburg Deutschland
| | - Oliver Skarsetz
- A3BMS Lab – Aktive, Adaptive and Autonome Bioinspirierte Materialen Institut für Makromolekulare Chemie Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 31 79104 Freiburg Deutschland
- Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 21 79104 Freiburg Deutschland
- Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien (FIT) Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 105 79110 Freiburg Deutschland
| | - Guido Creusen
- A3BMS Lab – Aktive, Adaptive and Autonome Bioinspirierte Materialen Institut für Makromolekulare Chemie Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 31 79104 Freiburg Deutschland
- Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 21 79104 Freiburg Deutschland
- Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien (FIT) Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 105 79110 Freiburg Deutschland
| | - Daniel Hoenders
- A3BMS Lab – Aktive, Adaptive and Autonome Bioinspirierte Materialen Institut für Makromolekulare Chemie Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 31 79104 Freiburg Deutschland
- Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 21 79104 Freiburg Deutschland
- Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien (FIT) Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 105 79110 Freiburg Deutschland
- A3BMS Lab – Aktive, Adaptive und Autonome Bioinspirierte Materialen Fachbereich Chemie Universität Mainz Duesbergweg 10–14 55128 Mainz Deutschland
| | - Paula Straub
- A3BMS Lab – Aktive, Adaptive and Autonome Bioinspirierte Materialen Institut für Makromolekulare Chemie Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 31 79104 Freiburg Deutschland
- Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 21 79104 Freiburg Deutschland
- Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien (FIT) Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 105 79110 Freiburg Deutschland
- Exzellenz-Cluster livMatS @ FIT – Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 105 79110 Freiburg Deutschland
| | - Andreas Walther
- A3BMS Lab – Aktive, Adaptive and Autonome Bioinspirierte Materialen Institut für Makromolekulare Chemie Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 31 79104 Freiburg Deutschland
- Freiburger Materialforschungszentrum (FMF) Albert-Ludwigs-Universität Freiburg Stefan-Meier-Straße 21 79104 Freiburg Deutschland
- Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien (FIT) Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 105 79110 Freiburg Deutschland
- Exzellenz-Cluster livMatS @ FIT – Freiburger Zentrum für interaktive Werkstoffe und bioinspirierte Technologien Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 105 79110 Freiburg Deutschland
- A3BMS Lab – Aktive, Adaptive und Autonome Bioinspirierte Materialen Fachbereich Chemie Universität Mainz Duesbergweg 10–14 55128 Mainz Deutschland
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9
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Guan T, Du Z, Peng J, Zhao D, Sun N, Ren B. Polymerizable Hydrophobically Modified Ethoxylated Urethane Acrylate Polymer: Synthesis and Viscoelastic Behavior in Aqueous Systems. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00982] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao Guan
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhukang Du
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510641, China
| | - Jun Peng
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Dongli Zhao
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ning Sun
- Department of Material Technology, Jiangmen Polytechnic, Jiangmen 529090, China
| | - Biye Ren
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
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10
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Quienne B, Pinaud J, Robin JJ, Caillol S. From Architectures to Cutting-Edge Properties, the Blooming World of Hydrophobically Modified Ethoxylated Urethanes (HEURs). Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01353] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Julien Pinaud
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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11
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Z-E isomerization of azobenzene based amphiphilic poly(urethane-urea)s: Influence on the dynamic mechanical properties and the effect of the self-assembly in solution on the isomerization kinetics. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109583] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Kwon Y, Matsumiya Y, Watanabe H. Dielectric Relaxation of Type-A Chains Undergoing Head-to-Tail Association/Dissociation: Difference from Head-to-Head Case and Correlation with Viscoelastic Relaxation. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Youngdon Kwon
- School of Chemical Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do 440-746, Korea
| | - Yumi Matsumiya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hiroshi Watanabe
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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13
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A reactive hydrophobically modified ethoxylated urethane (HEUR) associative polymer bearing benzophenone terminal groups: Synthesis, thickening and photo-initiating reactivity. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121552] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Du Z, Shan Y, Luo J, Sun N, Ren B. Linear Alternating Associative Polymer with Ultrahigh Molecular Weight: Facile Preparation by Self-Assembly Assisted Dimerization of Anthracene and Rheology in Aqueous Solution. ACS Macro Lett 2019; 8:279-284. [PMID: 35650829 DOI: 10.1021/acsmacrolett.9b00028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alternating associative polymers (AAPs) containing more than two species of alternating hydrophobic and hydrophilic units can form unique physical network and perform interesting rheological behavior in aqueous solution. In this work, an AAP was prepared through self-assembly assisted dimerization of an anthracene-functionalized telechelic associative polymer (AnTAP) in aqueous solution by light irradiation. It is demonstrated that AnTAP can in situ chain extend to AAP with well-defined linear structure and ultrahigh molecular weight through dimerization reaction of anthracene moieties in the core of micelle under light irradiation. Meanwhile, the solution changes from viscoelastic liquid to a free-standing gel, because a physical network that cannot relax in a finite time window has developed along with the dimerization process. The results are therefore of interest not only for understanding the network structure and rheological properties of AAP solution, but also for preparing AAPs with ultrahigh molecular weight by self-assembly assisted photodimerization reactions.
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Affiliation(s)
- Zhukang Du
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
- School of Material Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
| | - Yuke Shan
- School of Material Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
| | - Jintian Luo
- School of Material Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
| | - Ning Sun
- Department of Material Technology, Jiangmen Polytechnic, Jiangmen 529090, China
| | - Biye Ren
- School of Material Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
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15
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Watanabe H, Matsumiya Y, Kwon Y. Viscoelastic and Dielectric Relaxation of Reptating Type-A Chains Affected by Reversible Head-to-Head Association and Dissociation. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00691] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Hiroshi Watanabe
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yumi Matsumiya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Youngdon Kwon
- School of Chemical Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do 440-746, Korea
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16
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Du Z, Ke K, Chang X, Dong R, Ren B. Controlled Self-Assembly of Multiple-Responsive Superamphiphilc Polymers Based on Host-Guest Inclusions of a Modified PEG with β-Cyclodextrin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:5606-5614. [PMID: 29681154 DOI: 10.1021/acs.langmuir.8b00470] [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
Superamphiphilic polymers (SAPs) constructed by host-guest inclusion can self-assemble into various nanostructures in solution, which can find applications in many fields such as nanodevices, drug delivery, and template synthesis. Herein, we report the controlled self-assembly of multiple-responsive SAP based on a selective host-guest inclusion of β-cyclodextrin (β-CD) with a modified poly(ethylene glycol) (PEG) (FcC11AzoPEG) consisting of a ferrocene (Fc) end group, a C11 alkyl chain, an azobenzene (Azo) block, and a poly(ethylene glycol)methyl ether (PEG) chain. These SAPs can self-assemble into interesting nanostructures in water upon exposure to different stimuli because β-CD can be selectively included with different guests, such as Fc, Azo, and C11 alkyl chain, under different stimuli. The inclusion complex of Fc with β-CD (Fc@β-CD SAP) can form nanowire micelles in aqueous solution. The nanowire micelles can be transformed into spindle micelles with the addition of oxidant because the majority of β-CDs dissociated from the complex Fc@β-CD SAP due to a conversion of Fc to Fc+ and will preferentially include with Azo group to form another dominant inclusion complex (Azo@β-CD SAP). After UV irradiation, the spindle micelles can be further transformed into spherical micelles because most of β-CDs are excluded from the complex Azo@β-CD SAP due to a trans- to cis-Azo conversion and then form a dominant inclusion complex with C11 alkyl chains (C11@β-CD SAP). This work not only demonstrates the selective host-guest inclusion of stimuli-responsive groups modified PEG with β-CD but also provides a useful approach for construction of diverse morphologies.
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Affiliation(s)
- Zhukang Du
- School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Kang Ke
- School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Xueyi Chang
- School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Renfeng Dong
- School of Chemistry and Environment , South China Normal University , Guangzhou 510006 , China
| | - Biye Ren
- School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
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17
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Jesson C, Cunningham VJ, Smallridge MJ, Armes SP. Synthesis of High Molecular Weight Poly(glycerol monomethacrylate) via RAFT Emulsion Polymerization of Isopropylideneglycerol Methacrylate. Macromolecules 2018; 51:3221-3232. [PMID: 29805184 PMCID: PMC5959244 DOI: 10.1021/acs.macromol.8b00294] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/27/2018] [Indexed: 12/17/2022]
Abstract
High molecular weight water-soluble polymers are widely used as flocculants or thickeners. However, synthesis of such polymers via solution polymerization invariably results in highly viscous fluids, which makes subsequent processing somewhat problematic. Alternatively, such polymers can be prepared as colloidal dispersions; in principle, this is advantageous because the particulate nature of the polymer chains ensures a much lower fluid viscosity. Herein we exemplify the latter approach by reporting the convenient one-pot synthesis of high molecular weight poly(glycerol monomethacrylate) (PGMA) via the reversible addition-fragmentation chain transfer (RAFT) aqueous emulsion polymerization of a water-immiscible protected monomer precursor, isopropylideneglycerol methacrylate (IPGMA) at 70 °C, using a water-soluble poly(glycerol monomethacrylate) (PGMA) chain transfer agent as a steric stabilizer. This formulation produces a low-viscosity aqueous dispersion of PGMA-PIPGMA diblock copolymer nanoparticles at 20% solids. Subsequent acid deprotection of the hydrophobic core-forming PIPGMA block leads to particle dissolution and affords a viscous aqueous solution comprising high molecular weight PGMA homopolymer chains with a relatively narrow molecular weight distribution. Moreover, it is shown that this latex precursor route offers an important advantage compared to the RAFT aqueous solution polymerization of glycerol monomethacrylate since it provides a significantly faster rate of polymerization (and hence higher monomer conversion) under comparable conditions.
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Affiliation(s)
- Craig
P. Jesson
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
| | | | | | - Steven P. Armes
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, U.K.
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18
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Du Z, Yan X, Dong R, Ke K, Ren B, Tong Z. Unusual Transient Network and Rheology of a Photoresponsive Telechelic Associative Model Polymer in Aqueous Solution Induced by Dimerization of Coumarin End Groups. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b01514] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhukang Du
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaolong Yan
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Renfeng Dong
- School
of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Kang Ke
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Biye Ren
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhen Tong
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
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19
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Influence of substituted structure of Percec-type mini-dendritic end groups on aggregation and rheology of hydrophobically modified ethoxylated urethanes (HEURs) in aqueous solution. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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A dual stimuli-responsive amphiphilic polymer: reversible self-assembly and rate-controlled drug release. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4156-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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21
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Qu F, Ma X, Zhu L, Chen F. Switchable electrode functionalized with an azobenzene-containing copolymer thin film using the Langmuir–Schaefer technique for a “smart” uric acid/air fuel cell. Electrochem commun 2017. [DOI: 10.1016/j.elecom.2017.01.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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Du Z, Ren B, Chang X, Dong R, Tong Z. An End-Bifunctionalized Hydrophobically Modified Ethoxylated Urethane Model Polymer: Multiple Stimuli-Responsive Aggregation and Rheology in Aqueous Solution. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02301] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Zhukang Du
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Biye Ren
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xueyi Chang
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Renfeng Dong
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhen Tong
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
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23
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Chang X, Du Z, Hu F, Cheng Z, Ren B, Fu S, Tong Z. Ferrocene-Functionalized Hydrophobically Modified Ethoxylated Urethane: Redox-Responsive Controlled Self-Assembly and Rheological Behavior in Aqueous Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12137-12145. [PMID: 27800681 DOI: 10.1021/acs.langmuir.6b03508] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this work, we present a novel redox-responsive ferrocene-functionalized hydrophobically modified ethoxylated urethane (Fc-HEUR) model polymer. The effects of a redox-induced hydrophobicity change of ferrocenyl hydrophobes on the self-assembly and rheological properties of Fc-HEUR in aqueous solution were investigated. In view of the redox-induced change in the hydrophilic-lipophilic balance of polymers, the Fc-HEUR polymer in aqueous solution can reversibly self-assemble into spherical micelles and larger micellar aggregates of different nanoscales and also disassemble by redox reactions immediately. Moreover, we have demonstrated that a rearrangement of micellar junctions takes place through a bridge-loop or loop-bridge transition in the concentrated polymer solution followed by redox reactions, which induces a great change in the rheological properties of the polymer solution: a viscoelastic liquid for the reduction state Fc-HEUR and a viscous liquid for the oxidation state Fc+-HEUR, owing to their different relaxation behaviors. Particularly, the associative structures and rheological properties of the Fc-HEUR aqueous solution can be reversibly controlled by redox reactions. This work will be useful not only for understanding of the thickening mechanism of stimuli-responsive HEURs but also for the development of reversible self-assembly and controlled rheological fluids, which may have some special application in drug delivery systems, catalyst supports, sensors, and microfluidic devices.
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Affiliation(s)
| | | | | | - Zhiyu Cheng
- College of Chemistry and Environmental Engineering, Dongguan University of Technology , Dongguan 523808, China
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