1
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Domínguez SE, Kohn B, Ääritalo T, Damlin P, Scheler U, Kvarnström C. Cationic polythiophene-anionic fullerene pair in water and water-dioxane: studies on hydrogen bonding capabilities, kinetic and thermodynamic properties. Phys Chem Chem Phys 2021; 23:21013-21028. [PMID: 34522930 DOI: 10.1039/d0cp05748g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Despite the vast array of solution- and solid-state bio-analytical, bioelectronic and optoelectronic applications of cationic polythiophenes (CPTs), the number of studies focused on the role of hydrogen bonding (H-bonding) between these and other molecules is scarce, regardless of whether H-bonding is expected to play an important role in several such applications. Also, despite the advantages of using cosolvents to systematically examine the molecular interactions, there are no such studies for CPTs to our knowledge. This work presents a steady-state UV-vis/fluorescence spectroscopic, kinetic and thermodynamic study on the H-bonding interactions between a water-soluble, cationic-anionic (isothiouronium-tetraphosphonate), polythiophene-fullerene donor-acceptor pair with two-point, charge-assisted H-bonding (CAHB) capabilities, tuned using water or a 1,4-dioxane-water mixture (W-DI). Both solvents generate photoinduced electron transfer (PET), fluorescence resonance energy transfer (FRET), spontaneous binding, H-bonding, ground-state complexing via multiple site binding, formation of micelle-like aggregates and equivalence points at a similar concentration of the quencher. However, in comparison with water, W-DI promotes less-ordered, less packed micellar aggregates, due to hydrophobic desolvation of the H-bond and larger solvent displacement during the PT1-4Fo complexation. This would decrease the extent of charge-transfer and the size of the sphere-of-quenching, mainly by displacements or rotations of the H-bonds, instead of elongations, together with a possible larger extent of diffusion-controlled static quenching. At [4Fo] larger than the equivalence point the micelles formed in water do not have available binding sites due to a tighter aggregation, causing a decrease in the quenching efficiency, while the micelles formed in W-DI start showing larger quenching efficiencies, possibly due to an increase in entropy that overcomes the desolvation of the H-bonding. These results could be useful when analyzing outputs from systems including CPTs with H-bonding capabilities, operating in (or casted from) solvents with clear differences in polarity and/or H-bonding capacity.
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Affiliation(s)
- Sergio E Domínguez
- Department of Chemistry, Turku University Centre for Materials and Surfaces (MatSurf), Vatselankatu 2, FI-20014 Turku, Finland.
| | - Benjamin Kohn
- Leibniz-Institut für, University of Turku, D-01069 Dresden, Germany
| | - Timo Ääritalo
- Department of Chemistry, Turku University Centre for Materials and Surfaces (MatSurf), Vatselankatu 2, FI-20014 Turku, Finland.
| | - Pia Damlin
- Department of Chemistry, Turku University Centre for Materials and Surfaces (MatSurf), Vatselankatu 2, FI-20014 Turku, Finland.
| | - Ulrich Scheler
- Leibniz-Institut für, University of Turku, D-01069 Dresden, Germany
| | - Carita Kvarnström
- Department of Chemistry, Turku University Centre for Materials and Surfaces (MatSurf), Vatselankatu 2, FI-20014 Turku, Finland.
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2
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Sakakibara K, Wakiuchi A, Murata Y, Tsujii Y. Precise synthesis of double-armed polymers with fullerene C 60 at the junction for controlled architecture. Polym Chem 2020. [DOI: 10.1039/d0py00458h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first successful synthesis of the polymer-attached 1,2-hydrofullerene and the double-armed 1,4-bisadducts in a regioselective manner via controlled radical reactions.
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Affiliation(s)
- Keita Sakakibara
- Institute for Chemical Research
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Araki Wakiuchi
- Institute for Chemical Research
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Yasujiro Murata
- Institute for Chemical Research
- Kyoto University
- Kyoto 611-0011
- Japan
| | - Yoshinobu Tsujii
- Institute for Chemical Research
- Kyoto University
- Kyoto 611-0011
- Japan
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3
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Association behaviors of poly(N-vinylpyrrolidone)-grafted fullerenes in aqueous solution. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1604-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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4
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Control of assembly size of poly (methacrylic acid)-grafted fullerenes in aqueous solution. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1575-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Tang J, Li XY, Wu H, Ren LJ, Zhang YQ, Yao HX, Hu MB, Wang W. Tube-graft-Sheet Nano-Objects Created by A Stepwise Self-Assembly of Polymer-Polyoxometalate Hybrids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:460-467. [PMID: 26710830 DOI: 10.1021/acs.langmuir.5b04504] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, we report the preparation of complex nano-objects by means of a stepwise self-assembly of two polymer-polyoxometalate hybrids (PPHs) in solution. The PPHs are designed and synthesized by tethering two linear poly(ε-caprolactone)s (PCL) of different molecular weights (MW) on a complex of a Wells-Dawson-type polyoxometalate (POM) cluster and its countraions. The higher MW PCL-POM self-assembled into nanosheets, while the lower MW PCL-POM assembled into nanotubes just by altering the ratio of water in the DMF-water mixed solvent system. The two nano-objects have a similar membrane structure in which a PCL layer is sandwiched by the two POM-based complex layers. The PCL layer in the nanosheets is semicrystalline, while the PCL layer in the nanotubes is amorphous. We further exploited this MW-dependence to self-assemble the nanotubes on the nanosheet edges to create complex tube-graft-sheet nano-objects. We found that the nanotubes nucleate on the four {110} faces of the PCL crystal and then further grow along the crystallographic b-axis of the PCL crystal. Our findings offer hope for the further development of nano-objects with increasing complexity.
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Affiliation(s)
- Jing Tang
- Center for Synthetic Soft Materials, Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
| | - Xue-Ying Li
- Center for Synthetic Soft Materials, Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
| | - Han Wu
- Center for Synthetic Soft Materials, Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
| | - Li-Jun Ren
- Center for Synthetic Soft Materials, Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
| | - Yu-Qi Zhang
- Center for Synthetic Soft Materials, Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
| | - Hai-Xia Yao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , Beijing 100029, China
| | - Min-Biao Hu
- Center for Synthetic Soft Materials, Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
| | - Wei Wang
- Center for Synthetic Soft Materials, Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, China
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6
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Motoyanagi J, Kurata A, Minoda M. Self-assembly behavior of amphiphilic C₆₀-end-capped poly(vinyl ether)s in water and dissociation of the aggregates by the complexing of the C₆₀ moieties with externally added γ-cyclodextrins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2256-61. [PMID: 25658224 DOI: 10.1021/la504341s] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
C60-end-capped polymers consisting of an amphiphilic poly(2-methoxyethyl vinyl ether) (PMOVE) main chain were synthesized by living cationic polymerization using a C60-functionalized initiator (C60VE-TFA) in the presence of EtAlCl2 as an activator and dioxane as an added base. The obtained polymers (C60-PMOVE) dissolved in a wide range of solvents including water and exhibited solvatochromism depending on the polarity of the media employed. This phenomenon was attributed to self-assembly in polar media due to hydrophobicity of the C60 moieties at the terminus of the amphiphilic polymer chain. Furthermore, the addition of γ-cyclodextrin (γ-CD), a strong host molecule for fullerenes, to the self-assembled system brought about the dissociation of the aggregates into molecularly dispersed free polymer chains. Titration of the aqueous solution of the self-assembly of C60-PMOVE with γ-CD indicated the possible formation of inclusion complexes of C60-PMOVE and γ-CD, and this binding process occurs in a positive cooperative manner.
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Affiliation(s)
- Jin Motoyanagi
- Department of Chemistry and Materials Technology, Graduate School of Science and Technology, Kyoto Institute of Technology , Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Yin P, Lin Z, Wu J, Hsu CH, Chen X, Zhou J, Lu P, Eghtesadi SA, Yu X, Cheng SZD, Liu T. Charge-Regulated Spontaneous, Reversible Self-Assembly of the Carboxylic Acid-Functionalized Hydrophilic Fullerene Macroanions in Dilute Solution. Macromolecules 2015. [DOI: 10.1021/ma5022314] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Panchao Yin
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Zhiwei Lin
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Jiayingzi Wu
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Chih-Hao Hsu
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Xinyue Chen
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Jing Zhou
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Pengtao Lu
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Seyed Ali Eghtesadi
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Xinfei Yu
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Stephen Z. D. Cheng
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Tianbo Liu
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
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8
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Yu D, Zou G, Cui X, Mao Z, Estrela-Lopis I, Donath E, Gao C. Monitoring the intracellular transformation process of surface-cleavable PLGA particles containing disulfide bonds by fluorescence resonance energy transfer. J Mater Chem B 2015; 3:8865-8873. [DOI: 10.1039/c5tb01687h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The FRET technique was used to quantify the surface cleavage kinetics of PLGA particles containing disulfide bonds in cells.
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Affiliation(s)
- Dahai Yu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Guangyang Zou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xiaojing Cui
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhengwei Mao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Irina Estrela-Lopis
- Institute of Medical Physics & Biophysics
- Leipzig University
- 04107 Leipzig
- Germany
| | - Edwin Donath
- Institute of Medical Physics & Biophysics
- Leipzig University
- 04107 Leipzig
- Germany
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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9
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Yang HT, Tian ZY, Ruan XJ, Zhang M, Miao CB, Sun XQ. CuBr/PMDETA-Mediated Reactions of [60]Fullerene with Active Halides: Preparation of Methano[60]Fullerene Derivatives. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200759] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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Kuznetsov SI, Yumagulova RK, Medvedeva NA, Khamidullin FF, Kolesov SV. Fullerene-containing polymers: UV spectroscopic study. POLYMER SCIENCE SERIES A 2012. [DOI: 10.1134/s0965545x12050069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Yao Z, Tam KC. Stimuli-Responsive Water-Soluble Fullerene (C60) Polymeric Systems. Macromol Rapid Commun 2011; 32:1863-85. [DOI: 10.1002/marc.201100426] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 07/25/2011] [Indexed: 11/10/2022]
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12
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Chu CC, Tsai YJ, Hsiao LC, Wang L. Controlled Self-Aggregation of C60-Anchored Multiarmed Polyacrylic Acids and Their Cytotoxicity Evaluation. Macromolecules 2011. [DOI: 10.1021/ma2013404] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chih-Chien Chu
- School of Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Ya-Ju Tsai
- School of Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Li-Chia Hsiao
- School of Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Leeyih Wang
- Center for Condensed Matter Science, National Taiwan University, Taipei 10617, Taiwan
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13
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Yao ZL, Tam KC. Synthesis and self-assembly of stimuli-responsive poly(2-(dimethylamino) ethyl methacrylate)-block-fullerene (PDMAEMA-b-C60) and the demicellization induced by free PDMAEMA chains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6668-6673. [PMID: 21568352 DOI: 10.1021/la200885h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Well-defined poly(2-(dimethylamino) ethyl methacrylate)-block-fullerene [60] ((PDMAEMA)-b-C(60)) with a galactose targeting moiety was prepared by atom-transfer radical polymerization (ATRP). This copolymer was designed for possible use as a targeted drug carrier. The chemical composition and the self-assembly behavior were characterized using different techniques, including GPC, NMR, UV, and DLS. The self-assembly of the galactose-functionalized PDMAEMA-b-C(60) structure in aqueous solutions was investigated using dynamic light scattering (DLS) under different pH conditions. At pH 3 and 10, the DLS results showed the presence of both polymeric micelles and unimers. However, a smaller R(h) was observed at pH 10 than at pH 3 because of electrostatic repulsion at low pH values. In addition, free PDMAEMA chains induced the demicellization of self-assembled nanostructures caused by the formation of a charge-transfer complex between PDMAEMA and C(60.) This phenomenon offers possible applications for free-polymer-triggered drug release.
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Affiliation(s)
- Z L Yao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
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14
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Loos MR, Abetz V, Schulte K. A Highly Efficient One-Pot Method for the Synthesis of Carbon Black/Poly(4,4′-Diphenylether-1,3,4-Oxadiazoles) Composites. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201100048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Delivery of fullerene-containing complexes via microgel swelling and shear-induced release. Int J Pharm 2010; 384:9-14. [DOI: 10.1016/j.ijpharm.2009.09.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 09/09/2009] [Accepted: 09/11/2009] [Indexed: 11/21/2022]
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16
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Wang Q, Tam KC. Dual polarization interferometric analysis on the interaction between fullerene grafted polymer and nonionic surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:9898-9902. [PMID: 19606829 DOI: 10.1021/la901052b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The interaction between polyelectrolyte grafted fullerenes and surfactants was elucidated using a dual polarization interferometer (DPI). The deposition of poly(2-(dimethylamino)ethyl methacrylate) (PDMA(50)-b-C(60)) at pH 6 on the surface of silicon oxynitride induced by electrostatic interaction between charged PDMA segments and negatively charged surface revealed an adsorption thickness similar to the diameter of a fullerene molecule. A second deposition of poly(acrylic acid)-block-C(60) (PAA(83)-b-C(60)) on adsorbed PDMA(50)-b-C(60) at pH 6 was facilitated by electrostatic interaction between negatively and positively charged PAA and PDMA segments, respectively. A monolayer of PAA(83)-b-C(60) adsorbed on PDMA(50)-b-C(60) layer yielded a thickness twice the diameter of C(60) molecules. As a comparison, a two end-capped C(60)-PAA(83)-C(60) was examined, where the packing thickness and mass were smaller than the monocapped system due to steric hindrance effect of fullerene molecules. The adsorption of two nonionic surfactants (i.e., polyoxyethylene 9 lauryl ether (Brij 76) and octyl phenol ethoxylate (Triton X-100 or TX100)) on the adsorbed PDMA-C(60) layer was examined. Both Brij 76 and TX100 interacted with the PDMA-C(60) layer. For TX100, the interaction was promoted by pi-pi interaction between the C(60) headgroup and phenyl ring of the surfactant. Beyond the critical micellar concentration of TX100, the adsorption was greatly reduced. The concentration effect of first layer PDMA-C(60) was evaluated, where the PDMA-C(60) molecules adsorbed on the chip at higher density, resulting in a larger layer thickness. The densely packed fullerene headgroup hindered the penetration of TX100 aromatic ring into the first layer.
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Affiliation(s)
- Qiqiang Wang
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798
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17
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Tan BH, Gudipati CS, Hussain H, He C, Liu Y, Davis TP. Synthesis and Self-Assembly of pH-Responsive Amphiphilic Poly(dimethylaminoethyl methacrylate)-block-Poly(pentafluorostyrene) Block Copolymer in Aqueous Solution. Macromol Rapid Commun 2009; 30:1002-8. [DOI: 10.1002/marc.200800799] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Revised: 02/23/2009] [Accepted: 03/02/2009] [Indexed: 11/09/2022]
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18
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Li C, Hu J, Yin J, Liu S. Click Coupling Fullerene onto Thermoresponsive Water-Soluble Diblock Copolymer and Homopolymer Chains at Defined Positions. Macromolecules 2009. [DOI: 10.1021/ma900788k] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Changhua Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jun Yin
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
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19
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Hiorns RC, Iratçabal P, Bégué D, Khoukh A, De Bettignies R, Leroy J, Firon M, Sentein C, Martinez H, Preud'homme H, Dagron-Lartigau C. Alternatively linking fullerene and conjugated polymers. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23311] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Kai W, Hua L, Dong T, Pan P, Zhu B, Inoue Y. Polyhedral Oligomeric Silsesquioxane- and Fullerene-End-Capped Poly(ε
-caprolactone). MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200800020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Dai S, Ravi P, Tam KC. pH-Responsive polymers: synthesis, properties and applications. SOFT MATTER 2008; 4:435-449. [PMID: 32907201 DOI: 10.1039/b714741d] [Citation(s) in RCA: 421] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
pH-Responsive polymers are systems whose solubility, volume, and chain conformation can be manipulated by changes in pH, co-solvent, and electrolytes. This review summarizes recent developments covering synthesis, physicochemical properties, and applications in various disciplines. A variety of synthetic methodologies comprising of emulsion polymerization and living radical polymerization techniques are described, and some of their salient features are highlighted. Several polymeric systems, such as homopolymers, block copolymers, microgels, hydrogels and polymer brushes at interfaces are reviewed, where important characteristics that govern their behavior in solutions are described. Potential applications of these systems in controlled drug delivery, personal and home care, industrial coatings, biological and membrane science, viscosity modifiers, colloid stabilization, and water remediation, are discussed.
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Affiliation(s)
- Sheng Dai
- National Institute for Nanotechnology, National Research Council Canada, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
| | - Palaniswamy Ravi
- Innovation Centre, 3M Asia Pacific Pte. Ltd, 100 Woodlands Avenue 7, 738205, Singapore
| | - Kam Chiu Tam
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
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Wang X, Zhang Y, Zhu Z, Liu S. Fabrication of Fullerene-Containing Hybrid Vesicles via Supramolecular Self-Assembly of a Well-Defined Amphiphilic Block Copolymer Incorporated with a Single C60 Moiety at the Diblock Junction Point. Macromol Rapid Commun 2008. [DOI: 10.1002/marc.200700811] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Kai W, Hua L, Dong T, Pan P, Zhu B, Inoue Y. Fullerene End-Capped Biodegradable Poly(ɛ-caprolactone). MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200700375] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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24
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Wang C, Ravi P, Tam KC. Supramolecular complex of [60]fullerene-grafted polyelectrolyte and surfactant: mechanism and nanostructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:8798-805. [PMID: 17658759 DOI: 10.1021/la700600r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Water-soluble, pH-responsive mono- and di-[60]fullerene end-capped poly(acrylic acid)s (PAA-C60 and C60-PAA-C60) were synthesized using the atom transfer radical polymerization technique. Isothermal titration calorimetry, dynamic light scattering, UV-vis spectroscopy, and transmission electron microscopy were employed to study the supramolecular complexation between fullerene end-capped PAAs and nonionic surfactant, polyethylene glycol (9-10) tert-octylphenyl ether, also known as Triton X100 (TX100) at different pH values. At pH < 4, TX100 bound specifically to C60 domains driven by hydrophobic and pi-pi interactions between TX100 and fullerene molecules. The binding was exothermic, and the magnitude of the interaction decreased gradually with increasing pH. The amount of polymer-bound TX100 was proportional to the fullerene content, which was approximately 1.3 and approximately 2.5 mM for 5 mM (concentration of carboxylic groups) PAA-C60 and C60-PAA-C60, respectively. Morphological transformations resulting in the formation of polymer/surfactant complex (PSC) precipitates in the course of binding were observed for both polymers. The PSC of PAA-C60 possessed a dense spherical structure, whereas the PSC of C60-PAA-C60 possessed a lamellar stacking structure. The PSC precipitates resolubilized in excess amounts of TX100 to form stable aggregates.
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Affiliation(s)
- Chang Wang
- Singapore-MIT Alliance, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
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Ravi P, Dai S, Tam KC. Synthesis and self-assembly of [60]fullerene containing sulfobetaine polymer in aqueous solution. J Phys Chem B 2007; 109:22791-8. [PMID: 16853969 DOI: 10.1021/jp053088h] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A well-defined poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA-b-C60) was synthesized using the atom transfer radical polymerization (ATRP) technique and betainized with 1,3-sulfobetaine to yield a Bet-PDMAEMA-b-C60. The solution properties were then studied by light transmittance, viscometric, 1H NMR laser light scattering, and transmission electron macroscopic techniques. It was found that Bet-PDMAEMA-b-C60 exhibits an upper critical solution temperature (USCT) similar to that observed for Bet-PDMAEMA in aqueous solution. However, the modification of Bet-PDMAEMA with a C60 molecule increases the UCST of Bet-PDMAEMA in solution, which is a function of the solution ionic strength. Addition of a small amount of salt increases the UCST, similar to polyelectrolyte systems, while the presence of an excess amount of salt leads to a decrease in the UCST, attributed to the antipolyelectrolyte effect of polyampholytes. In aqueous salt solution, Bet-PDMAEMA-b-C60 chains self-assemble into micelles that coexist with unimeric Bet-PDMAEMA-b-C60 chains. TEM studies revealed that the system agglomerates when the temperature exceeds the UCST.
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Affiliation(s)
- P Ravi
- Singapore-MIT Alliance and School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore
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Synthesis and self-assembly of comb-like amphiphilic copolymer poly(maleic anhydride-alt-stearyl methacrylate)-b-poly(stearyl methacrylate). Colloid Polym Sci 2007. [DOI: 10.1007/s00396-007-1695-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhou J, Wang L, Yang Q, Liu Q, Yu H, Zhao Z. Novel Thermoresponsive and pH-Responsive Aggregates from Self-Assembly of Triblock Copolymer PSMA-b-PNIPAAm-b-PSMA. J Phys Chem B 2007; 111:5573-80. [PMID: 17472366 DOI: 10.1021/jp070480h] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of novel triblock copolymers of poly(stearyl methacrylate)-b-poly(N-isopropylacrylamide)-b-poly(stearyl methacrylate) (PSMA-b-PNIPAAm-b-PSMA) with different molecular weights was synthesized through carboxyl-terminated trithiocarbonates as a highly efficient RAFT agent via reversible addition-fragmentation chain transfer (RAFT) polymerization. The resultant polymers were characterized by 1H NMR, FT-IR spectroscopy, and GPC. By varying the organic solvent used in the self-assembly procedure and adjusting the copolymer composition, multiple morphologies ranging from vesicles and core-shell spherical aggregates with different dimensions to pearl-necklace-like aggregates were obtained. The aggregates showed thermoresponsive and pH-responsive properties through the lower critical solution temperature (LCST) of PNIPAAm and the two carboxyl end groups of the copolymer.
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Affiliation(s)
- Junfeng Zhou
- State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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Zhou J, Wang L, Dong X, Yang Q, Wang J, Yu H, Chen X. Preparation of organic/inorganic hybrid nanomaterials using aggregates of poly(stearyl methacrylate)-b-poly(3-(trimethoxysilyl) propyl methacrylate) as precursor. Eur Polym J 2007. [DOI: 10.1016/j.eurpolymj.2006.09.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Affiliation(s)
- Francesco Giacalone
- Dipartimento di Chimica Organica "E. Paterno", Università degli Studi di Palermo, Parco d'Orleans II, I-90128 Palermo, Italy.
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Yang Q, Wang L, Xiang WD, Zhou JF, Tan QH. Preparation of polymer-grafted carbon black nanoparticles by surface-initiated atom transfer radical polymerization. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pola.22077] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kai W, Hua L, Dong T, Pan P, Zhu B, Inoue Y. Synthesis and characterization of fullerene grafted poly(ɛ-caprolactone). J Appl Polym Sci 2007. [DOI: 10.1002/app.27621] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ravi P, Wang C, Dai S, Tam KC. Self-assembly of well-defined mono and dual end-capped C(60) containing polyacrylic acids in aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:7167-74. [PMID: 16893212 DOI: 10.1021/la0606345] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Well-defined stimuli-responsive mono and dual fullerene (C(60)) end-capped poly(acrylic acid)s (PAA-C(60) and C(60)-PAA-C(60)) were synthesized by reacting C(60) with well-defined mono and dual azide end-functionalized poly(tert-butyl acrylate)s, followed by hydrolysis. The aggregation behaviors of these C(60) end-capped polymers in aqueous solution were examined using potentiometric and conductometric titrations and static and dynamic light scattering as well as transmission electron microscopy (TEM). Both PAA-C(60) and C(60)-PAA-C(60) show pH-responsive and water-soluble properties at high pH. Both polymers self-assemble to form large compound micelles (LCMs) in aqueous solutions. The LCMs of PAA-C(60) exist as "compact aggregates", whereas the LCMs of C(60)-PAA-C(60) possess a "core-shell" structure with a larger size and aggregation number. The micelles for both polymers swell upon neutralization, where the R(h) of PAA-C(60) micelles increases from approximately 44 to approximately 102 nm and the R(h) of C(60)-PAA-C(60) aggregates varies from approximately 89 to approximately 128 nm with increasing degree of neutralization. The lower swelling of the dual end-capped C(60)-PAA-C(60) system is related to its higher C(60) content, which enhances the interpolymer chain hydrophobic association that restrains the swelling of micellar aggregates.
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Affiliation(s)
- P Ravi
- Singapore-MIT Alliance, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore
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Kawauchi T, Kumaki J, Yashima E. Nanosphere and Nanonetwork Formations of [60]Fullerene-End-Capped Stereoregular Poly(methyl methacrylate)s through Stereocomplex Formation Combined with Self-Assembly of the Fullerenes. J Am Chem Soc 2006; 128:10560-7. [PMID: 16895424 DOI: 10.1021/ja063252u] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a novel and versatile method for constructing a supramolecular nanosphere and nanonetwork based on isotactic and syndiotactic C60-end-capped poly(methyl methacrylate)s (it- and st-PMMA-C60's) through their stereocomplex formation combined with self-assembly of the terminal C60. The stereoregular PMMA-C60's with a precisely controlled structure including molecular weight, its distribution, tacticity, and the chain-end structure were synthesized by the stereospecific anionic living polymerizations of methyl methacrylate followed by end-capping with C60, and their structures were proven by size exclusion chromatography, NMR, UV-vis, and MALDI-TOF-MS analyses. The stereoregular PMMA-C60's self-assembled to form a core-shell aggregate with C60 as the core and the PMMA chains as the shell in H2O/CH3CN (1/9, v/v) due to the solvophobic interaction of the C60 units. These it- and st-PMMA-C60 aggregates further supramolecularly assembled through iterative stereocomplex formation into nanonetworks in which the self-assembled C60 clusters were robustly connected with two- and three-dimensional arrangements. In addition, when the it- and st-PMMA-C60's were simultaneously mixed, self-assembly of the C60 units and stereocomplex formation of the it- and st-PMMA chains took place at once, resulting in the formation of uniformly sized spherical nanoparticles with resistance to heat. Similar nanonetwork architectures can be produced using it-PMMA-C60 clusters and st-PMMA prepolymers as the binder.
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Affiliation(s)
- Takehiro Kawauchi
- Yashima Super-structured Helix Project, Exploratory Research for Advanced Technology (ERATO), Japan
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Chu CC, Ho TI, Wang L. Synthesis and Characterization of C60-Anchored Multiarmed Polymers with Well-Defined Structures. Macromolecules 2006. [DOI: 10.1021/ma060718k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chih-Chien Chu
- Center for Condensed Matter Science, National Taiwan University, Taipei, Taiwan 106, Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, and Institute of Polymer Science and Technology, National Taiwan University, Taipei, Taiwan 106
| | - Tong-Ing Ho
- Center for Condensed Matter Science, National Taiwan University, Taipei, Taiwan 106, Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, and Institute of Polymer Science and Technology, National Taiwan University, Taipei, Taiwan 106
| | - Leeyih Wang
- Center for Condensed Matter Science, National Taiwan University, Taipei, Taiwan 106, Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, and Institute of Polymer Science and Technology, National Taiwan University, Taipei, Taiwan 106
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Wang M, Pramoda KP, Goh SH. Reinforcing and Toughening of Poly(vinyl chloride) with Double-C60-End-Capped Poly(n-butyl methacrylate). Macromolecules 2006. [DOI: 10.1021/ma0604901] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mian Wang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, and Institute of Materials Research and Engineering, National University of Singapore, 3 Research Link, Singapore 117602
| | - K. P. Pramoda
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, and Institute of Materials Research and Engineering, National University of Singapore, 3 Research Link, Singapore 117602
| | - S. H. Goh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, and Institute of Materials Research and Engineering, National University of Singapore, 3 Research Link, Singapore 117602
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Wang C, Ravi P, Tam KC. Morphological transformation of [60]fullerene-containing poly(acrylic acid) induced by the binding of surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:2927-30. [PMID: 16548533 DOI: 10.1021/la052191v] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Water-soluble pH-responsive [60]fullerene end-capped poly(acrylic acid) (PAA85-b-C60) was synthesized using atom-transfer radical polymerization (ATRP) technique. The unusual morphological transformation of the polymer induced by the binding of nonionic surfactant Triton X-100 (TX100) at different degrees of neutralization (alpha) was investigated using isothermal titration calorimetry (ITC), UV-vis spectroscopy, dynamic light scattering (DLS), and transmission electron microscopy (TEM). For the 5 mM (monomer concentration) polymer solution at pH < 4, approximately 1.3 mM TX100 binds specifically to C60 domains of the polymeric micelles driven by hydrophobic interaction, which induces a structural transformation of the polymer from a large compound micelle with a radius of 110 nm to a dense precipitated spherical polymer/surfactant complex (PSC) with a radius of 500 nm. The precipitates are resolubilized by a wetting layer of TX100 in excess surfactant (> 1.7 mM in the polymer solution). The binding is significantly weakened and the complexation is disrupted with increasing pH, where the interaction completely ceased at pH > 6.
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Affiliation(s)
- Chang Wang
- Singapore-MIT Alliance, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore
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Zhou J, Wang L, Wang C, Chen T, Yu H, Yang Q. Synthesis and self-assembly of amphiphilic maleic anhydride–stearyl methacrylate copolymer. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.08.070] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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