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Wang R, Wang X, Mu X, Feng W, Lu Y, Yu W, Zhou X. Reducing thermal damage to adjacent normal tissue with dual thermo-responsive polymer via thermo-induced phase transition for precise photothermal theranosis. Acta Biomater 2022; 148:142-151. [PMID: 35690327 DOI: 10.1016/j.actbio.2022.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/18/2022] [Accepted: 06/02/2022] [Indexed: 11/26/2022]
Abstract
Photothermal therapy has been extensively studied to improve the light-to-heat efficiency for tumor ablation, but could cause severe damage to adjacent healthy tissue due to the thermal transfer, the random distribution of photothermal agents (PTAs), or combination hereof. Herein, we solve this dilemma with a material design strategy to develop a P(AAm-co-AN)-b-P(NIPAM-co-DMAa)-b-P(AAm-co-AN) ABA triblock copolymer by RAFT polymerization, which exhibits both UCST and LCST dual thermo-responsive behaviors in aqueous solution. The P(AAm-co-AN) block with appropriate AN content allows to finely tune its UCST to ∼ 43°C, which can effectively co-assemble with camptothecin (CPT) and Cy7-TCF, a near-infrared (NIR) PTA, realizing the photo-activated "on-demand" release of CPT and Cy7-TCF. The LCST of P(NIPAM-co-DMAa) segment is adjusted to ∼ 53°C by varying DMAa content, enabling an irreversible sol-to-gel transition. The heat transfer in hydrogel and heat dissipation at the interface of hydrogel-adjacent tissue are limited, resulting in selectively cell killing in tumor, with little hyperthermia in adjacent tissues. Moreover, the hydrogel continues to release CPT to enhance the synergistic efficacy of PTT with chemotherapy. These results suggest that dual thermo-responsive polymer can contribute PTT with high selectivity and negligible side effects for precise medicine. STATEMENT OF SIGNIFICANCE: Photothermal therapy exploits the susceptibility of tumor cells toward external light-induced hyperthermia, but can cause severe damage to adjacent healthy tissue due to thermal transfer, random distribution of photothermal agents (PTAs), or combination hereof. Here, we solve this dilemma by developing a P(AAm-co-AN)-b-P(NIPAM-co-DMAa)-b-P(AAm-co-AN) triblock copolymer with UCST and LCST dual thermo-responsive behaviors, realizing the sequential micelle-unimer-hydrogel phase transitions. The polymer can effectively encapsulate PTA/drug, achieve long systemic circulation, accumulate in tumor through EPR effect, regulate drug release by controlling tumor temperature above UCST via irradiation, and finally exhibit a sol-gel transition, eradicating the heat transfer to adjacent tissue. This represents a practicable strategy to guide the design of next-generation polymeric vector that can contribute PTT with negligible side effects.
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Affiliation(s)
- Rui Wang
- Key Lab of Biobased Polymer Materials, Shandong Provincial Education Department, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China
| | - Xu Wang
- Key Lab of Biobased Polymer Materials, Shandong Provincial Education Department, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China
| | - Xueluer Mu
- Key Lab of Biobased Polymer Materials, Shandong Provincial Education Department, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China
| | - Wenbi Feng
- Key Lab of Biobased Polymer Materials, Shandong Provincial Education Department, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China
| | - Yingxi Lu
- School of Material Science, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China.
| | - Weisong Yu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, P.R. China
| | - Xianfeng Zhou
- Key Lab of Biobased Polymer Materials, Shandong Provincial Education Department, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P.R. China.
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2
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Morimoto N, Segui F, Qiu XP, Akiyoshi K, Winnik FM. Heat-Induced Flower Nanogels of Both Cholesterol End-Capped Poly( N-isopropylacrylamide)s in Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5218-5225. [PMID: 34730981 DOI: 10.1021/acs.langmuir.1c02394] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Thermoresponsive self-assembled nanogels were conveniently prepared by cholesterol end-capped poly(N-isopropylacrylamide) (PNIPAM) in water. Both cholesterol end-capped PNIPAMs (telelchelic cholesterol PNIPAM, tCH-PNIPAM) formed flower-like nanogels by the self-assembling of four to five polymer chains with multiple domains of cholesterol in water at 20 °C. Meanwhile, one end-group cholesterol-capped PNIPAM (semitelechelic cholesterol PNIPAM, stCH-PNIPAM) was also formed as a nanogel by the self-assembling of 15-20 polymer chains with 3 to 4 cholesterol domains. The hydrophobic cholesterol domains of tCH-PNIPAM nanogels were maintained above the lower critical solution temperature (LCST) of PNIPAM (>32 °C). Differently, the hydrophobic domains of stCH-PNIPAM were disrupted by cholesterol-free PNIPAM chain ends and formed large mesoglobules above the LCST. These transition controls of hydrophilic end-capped smart polymers may open new methodologies to design thermoresponsive nanosystems.
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Affiliation(s)
- Nobuyuki Morimoto
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Florence Segui
- Department of Chemistry and Faculty of Pharmacy, University of Montreal, CP6128 Succursale Centre Ville, Montreal, QC H3C 3J7, Canada
| | - Xing-Ping Qiu
- Department of Chemistry and Faculty of Pharmacy, University of Montreal, CP6128 Succursale Centre Ville, Montreal, QC H3C 3J7, Canada
| | - Kazunari Akiyoshi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Françoise M Winnik
- Department of Chemistry and Faculty of Pharmacy, University of Montreal, CP6128 Succursale Centre Ville, Montreal, QC H3C 3J7, Canada
- Department of Chemistry, University of Helsinki, PB 55, Helsinki FI-00014, Finland
- National Institute for Materials Science, WPI International Center for Materials Nanoarchitectonics (MANA), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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3
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Imidazole-based surface-active gelator: Thermo responsive gel-to-gel transition of 1-hexadecyl-3-methyl imidazolium salicylate for multidimensional applications. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117773] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Sun Y, Deming TJ. Self-Healing Multiblock Copolypeptide Hydrogels via Polyion Complexation. ACS Macro Lett 2019; 8:553-557. [PMID: 35619374 DOI: 10.1021/acsmacrolett.9b00269] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diblock, triblock, and pentablock copolypeptides were designed and prepared for formation of polyion complex hydrogels in aqueous media. Increasing the number of block segments was found to allow formation of hydrogels with substantially enhanced stiffness at equivalent concentrations. Use of similar length ionic segments also allowed mixing of different block architectures to fine-tune hydrogel properties. The pentablock hydrogels possess a promising combination of high stiffness, rapid self-healing properties, and cell compatible surface chemistry that makes them promising candidates for applications requiring injectable or printable hydrogel scaffolds.
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5
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Jana S, Biswas Y, Anas M, Saha A, Mandal TK. Poly[oligo(2-ethyl-2-oxazoline)acrylate]-Based Poly(ionic liquid) Random Copolymers with Coexistent and Tunable Lower Critical Solution Temperature- and Upper Critical Solution Temperature-Type Phase Transitions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12653-12663. [PMID: 30265540 DOI: 10.1021/acs.langmuir.8b03022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The synthesis of a series of dual thermosensitive nonionic-ionic random copolymers with varying compositions by reversible addition-fragmentation chain transfer polymerization is described. These copolymers contain oligo(2-ethyl-2-oxazoline)acrylate (OEtOxA) and either triphenyl-4-vinylbenzylphosphonium chloride ([VBTP][Cl]) or 3- n-butyl-1-vinylimidazolium bromide ([VBuIm][Br]) ionic liquid (IL) units. The copolymers having low content of ionic poly(ionic liquid) (PIL) (P[VBTP][Cl]/P[VBuIm][Br]) segments show only lower critical solution temperature (LCST)-type phase transition with almost linear increase of their cloud points with increasing percentage of ionic PIL segments. Furthermore, LCST-type cloud points ( TcLs) are found very sensitive and tunable with respect to the nature and concentration of halide ions (X- = Cl-, Br-, and I-) and copolymer compositions. However, copolymers with high content of ionic PIL segments show both LCST-type followed by upper critical solution temperature (UCST)-type phase transitions in the presence of halide ions. Dual LCST- and UCST-type phase behaviors are prominent and repeatable for many heating/cooling cycles. Both types of cloud points are found to be sensitive to copolymer compositions, concentration, and nature and concentration of the halide ions. The phase behaviors of both types of copolymers with a very high ionic content (>90%) are exactly similar to that of P[VBTP][Cl] or P[VBuIm][Br] homopolymers showing only UCST-type phase transition in the presence of halide ions. The inherent biocompatibility of the P(OEtOxA) segment along with the interesting dual thermoresponsiveness makes these copolymers highly suitable candidates for biomedical applications including drug delivery.
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Affiliation(s)
- Somdeb Jana
- Polymer Science Unit , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032 , India
| | - Yajnaseni Biswas
- Polymer Science Unit , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032 , India
| | - Md Anas
- Polymer Science Unit , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032 , India
| | - Anupam Saha
- Polymer Science Unit , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032 , India
| | - Tarun K Mandal
- Polymer Science Unit , Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700032 , India
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6
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Scheerder J, Dollekens R, Langermans H. The colloidal properties of alkaline-soluble waterborne polymers. J Appl Polym Sci 2018. [DOI: 10.1002/app.46168] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jurgen Scheerder
- DSM Coating Resins, Sluisweg 12; Waalwijk 5145 PE The Netherlands
| | - Remy Dollekens
- DSM Coating Resins, Sluisweg 12; Waalwijk 5145 PE The Netherlands
| | - Harm Langermans
- DSM Materials Science Centre, Urmonderbaan 22; Geleen 6167 RD The Netherlands
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7
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Chernikova EV, Sivtsov EV. Reversible addition-fragmentation chain-transfer polymerization: Fundamentals and use in practice. POLYMER SCIENCE SERIES B 2017. [DOI: 10.1134/s1560090417020038] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Xiang C, Wan H, Zhu M, Chen Y, Peng J, Zhou G. Dipicolylamine Functionalized Polyfluorene Based Gel with Lower Critical Solution Temperature: Preparation, Characterization, and Application. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8872-8879. [PMID: 28229598 DOI: 10.1021/acsami.7b00600] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A thermoresponsive fluorescent polymer gel with lower critical solution temperature (LCST) phase transition has been prepared by cooperating conjugated fluorene homopolymer poly(2,7-(9,9-di(8-di(2-picolyl)aminooctyl))fluorene) (PPAOF) and small organic dye sulforhodamine B (SRB) or its sodium salt (SRB-Na). The sol-gel phase transition originates from the electrostatic interactions between the protonated pyridyl/amino groups in PPAOF and the sulfonic groups in the organic dye molecules, as revealed by FTIR, variable-temperature 1H NMR spectroscopies, and cyclic voltammetry measurements. Consequently, the LCST value can be finely controlled by simply tuning the component concentrations. Moreover, due to the inefficient energy transfer, the resulting fluorescent polymer gel exhibits two independent emission bands at 440 and 577 nm, assigned to the characteristic emissions from fluorene homopolymer and organic dye, respectively. Furthermore, this fluorescent polymer gel exhibits a reversible electrofluorochromic (EFC) property with high fluorescence contrast when it is assembled in a single-layer supporting electrolyte-free EFC device. Most interestingly, different fluorescence colors can be achieved from the two electrodes of the device. Our findings may present a new way to design conjugated polymer based LCST gels and EFC materials.
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Affiliation(s)
- Chunlan Xiang
- Lab of Advanced Materials & Department of Macromolecular Science, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai 200438, P. R. China
| | - Hao Wan
- Lab of Advanced Materials & Department of Macromolecular Science, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai 200438, P. R. China
| | - Mingjing Zhu
- Lab of Advanced Materials & Department of Macromolecular Science, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai 200438, P. R. China
| | - Yijing Chen
- Lab of Advanced Materials & Department of Macromolecular Science, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai 200438, P. R. China
| | - Juan Peng
- Lab of Advanced Materials & Department of Macromolecular Science, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai 200438, P. R. China
| | - Gang Zhou
- Lab of Advanced Materials & Department of Macromolecular Science, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai 200438, P. R. China
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9
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Yeh MY, Zhao JY, Hsieh YR, Lin JH, Chen FY, Chakravarthy RD, Chung PC, Lin HC, Hung SC. Reverse thermo-responsive hydrogels prepared from Pluronic F127 and gelatin composite materials. RSC Adv 2017. [DOI: 10.1039/c7ra01118k] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of F127–gelatin composite hydrogels with reverse thermo-responsive and tunable mechanical properties were developed.
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Affiliation(s)
- Mei-Yu Yeh
- Graduate Institute of Biomedical Sciences
- China Medical University
- Taichung 40402
- Taiwan
- Integrative Stem Cell Center
| | - Jiong-Yao Zhao
- Graduate Institute of Biomedical Sciences
- China Medical University
- Taichung 40402
- Taiwan
| | - Yi-Ru Hsieh
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
| | - Jhong-Hua Lin
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
| | - Fang-Yi Chen
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
| | | | - Pei-Chun Chung
- Integrative Stem Cell Center
- China Medical University Hospital
- Taichung 40447
- Taiwan
| | - Hsin-Chieh Lin
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
| | - Shih-Chieh Hung
- Integrative Stem Cell Center
- China Medical University Hospital
- Taichung 40447
- Taiwan
- Institute of New Drug Development
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10
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Wang C, Zhang G, Liu G, Hu J, Liu S. Photo- and thermo-responsive multicompartment hydrogels for synergistic delivery of gemcitabine and doxorubicin. J Control Release 2016; 259:149-159. [PMID: 27865562 DOI: 10.1016/j.jconrel.2016.11.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 10/25/2016] [Accepted: 11/09/2016] [Indexed: 12/18/2022]
Abstract
Hydrogels have found promising applications in drug delivery due to their biocompatibility, high drug loading capability, and tunable release profiles. However, hydrogel-based carriers are primarily employed for delivering hydrophilic payloads while hydrophobic drugs cannot be efficiently delivered due to the lack of hydrophobic domains within conventional hydrogel matrices. Herein, we report that thermo- and photo-responsive hydrogels could be constructed from amphiphilic triblock copolymers, poly(N-isopropylacrylamide)-b-poly(4-acryloylmorpholine)-b-poly(2-((((2-nitrobenzyl)oxy)carbonyl) amino)ethyl methacrylate) (PNIPAM-b-PNAM-b-PNBOC), and the resulting hydrogels could be further engineered a new carrier for both hydrophilic gemcitabine (GCT) and hydrophobic doxorubicin (DOX). PNIPAM-b-PNAM-b-PNBOC triblock copolymers were first self-assembled into micelles with hydrophobic photosensitive PNBOC cores, hydrophilic PNAM inner shells, and thermoresponsive PNIPAM coronas below the lower critical solution temperature (LCST), while hydrogels of physically cross-linked micellar nanoparticles were achieved at elevated polymer concentrations and high temperatures above the critical gelation temperature (CGT). Rheological experiments revealed that the CGT was highly dependent on polymer compositions and concentrations, that is, a longer hydrophobic PNBOC block or a higher polymer concentration led to a decreased CGT. However, the CGT prior to UV irradiation (CGT0) could be drastically elevated after UV irradiation (CGTUV) as a result of UV irradiation-induced concurrently cross-linking and hydrophobic-to-hydrophilic transition within PNBOC cores. As such, gel-to-sol transition could be accomplished by either temperature decrease or exposure to UV irradiation at a fixed temperature lower than the CGTUV. Note that both GCT and DOX could be simultaneously encapsulated into the hydrogels due to the coexistence of extramicellar aqueous phase and hydrophobic micellar cores. Intriguingly, the subsequent co-release of GCT and DOX could be regulated by taking advantage of either temperature or UV irradiation-mediated gel-to-sol transitions.
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Affiliation(s)
- Cheng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guoying Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guhuan Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
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11
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Li Y, Ye Z, Shen L, Xu Y, Zhu A, Wu P, An Z. Formation of Multidomain Hydrogels via Thermally Induced Assembly of PISA-Generated Triblock Terpolymer Nanogels. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02538] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Youcheng Li
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
| | - Zhangxin Ye
- Department
of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China
| | - Liangliang Shen
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
| | - Yuanyuan Xu
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
| | - Anqi Zhu
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
| | - Peiyi Wu
- Department
of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, Shanghai 200433, China
| | - Zesheng An
- Institute
of Nanochemistry and Nanobiology, College of Environmental and Chemical
Engineering, Shanghai University, Shanghai 200444, China
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Chassenieux C, Tsitsilianis C. Recent trends in pH/thermo-responsive self-assembling hydrogels: from polyions to peptide-based polymeric gelators. SOFT MATTER 2016; 12:1344-1359. [PMID: 26781351 DOI: 10.1039/c5sm02710a] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this article, we highlight some recent developments in "smart" physical hydrogels achieved by self-assembling of block type macromolecules. More precisely we focus on two interesting types of gelators namely conventional ionic (or ionogenic) block copolymers and peptide-based polymers having as a common feature their responsiveness to pH and/or temperature which are the main triggers used for potential biomedical applications. Taking advantage of the immense skills of conventional block copolymer hydrogelators, namely macromolecular design, self-assembling mechanism, gel rheological properties, responsiveness to various triggers and innovative applications, the development of novel self-assembling gelators, integrating the new knowledge emerging from the peptide-based systems, opens new horizons towards bio-inspired technologies.
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Affiliation(s)
- Christophe Chassenieux
- LUNAM Université, Université du Maine, IMMM-UMR CNRS 6283, Département Polymères, Colloides et Interfaces, av. O. Messiaen, 72085 Le Μans cedex 9, France
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13
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Fu W, Zhao B. Thermoreversible physically crosslinked hydrogels from UCST-type thermosensitive ABA linear triblock copolymers. Polym Chem 2016. [DOI: 10.1039/c6py01517d] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Moderately concentrated aqueous solutions of UCST-type thermosensitive ABA linear triblock copolymers undergo cooling-induced, reversible sol–gel transitions.
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Affiliation(s)
- Wenxin Fu
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
| | - Bin Zhao
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
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14
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Tao Z, Peng K, Fan Y, Liu Y, Yang H. Multi-stimuli responsive supramolecular hydrogels based on Fe3+ and diblock copolymer micelle complexation. Polym Chem 2016. [DOI: 10.1039/c5py01742d] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a multi-stimuli responsive supramolecular hydrogel with great potential for biomedical application, which was composed of the micelle-forming diblock copolymer and physically cross-linked by complexation between ferric ions and carboxylic acid groups, exhibiting gel–sol transition caused by UV irradiation, multidentate ligands (EDTA) and redox agents (Na2S2O4).
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Affiliation(s)
- Zhen Tao
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Kang Peng
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Yujiao Fan
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Yunfei Liu
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Haiyang Yang
- CAS Key Laboratory of Soft Matter Chemistry
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- P. R. China
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15
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Zhang W, Yang S, Wang CF, Chen S. Anisotropic Biphase Frontal Polymerization toward in Situ Generation of Dual-Component Polymers. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00659] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Wanchao Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering,
College of Chemistry and Chemical Engineering, Nanjing Tech University, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Shengyang Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering,
College of Chemistry and Chemical Engineering, Nanjing Tech University, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Cai-Feng Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering,
College of Chemistry and Chemical Engineering, Nanjing Tech University, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Su Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering,
College of Chemistry and Chemical Engineering, Nanjing Tech University, 5 Xin Mofan Road, Nanjing 210009, P. R. China
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16
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17
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Yin J, Shi S, Hu J, Liu S. Construction of polyelectrolyte-responsive microgels, and polyelectrolyte concentration and chain length-dependent adsorption kinetics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9551-9559. [PMID: 25053121 DOI: 10.1021/la501918s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report on the construction of a polyelectrolyte-responsive system evolved from sterically stabilized protonated poly(2-vinylpyridine) (P2VPH(+)) microgels. Negatively charged sodium dodecylbenzenesulfonate (SDBS) surfactants could be readily internalized into the cationic microgels by means of electrostatic interactions, resulting in microgel collapse and concomitant formation of surfactant micellar domains (P2VPH(+)/SDBS)-contained electrostatic complexes. These internal hydrophobic domains conferred the opportunity of fluorescent dyes to be loaded. The obtained fluorescent microgel complexes could be further disintegrated in the presence of anionic polyelectrolyte, poly(sodium 4-styrenesulfonate) (PNaStS). The stronger electrostatic attraction between multivalent P2VPH(+) microgels and PNaStS polyelectrolyte than single-charged surfactant led to triggered release of the encapsulated pyrene dyes from the hydrophobic interiors into microgel dispersion. The process was confirmed by laser light scattering (LLS) and fluorescence measurements. Furthermore, the entire dynamic process of PNaStS adsorption into P2VPH(+) microgel interior was further studied by stopped-flow equipment as a function of polyelectrolyte concentration and degree of polymerization. The whole adsorption process could be well fitted with a double-exponential function, suggesting a fast (τ1) and a slow (τ2) relaxation time, respectively. The fast process (τ1) was correlated well with the approaching of PNaStS with P2VPH(+) microgel to form a nonequilibrium complex within the microgel shell, while the slow process (τ2) was consistent with the formation of equilibrium complexes in the microgel deeper inside. This simple yet feasible design augurs well for the promising applications in controlled release fields.
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Affiliation(s)
- Jun Yin
- Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Department of Polymer Material and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology , Hefei 230009, China
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18
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Yin J, Hu J, Zhang G, Liu S. Schizophrenic core-shell microgels: thermoregulated core and shell swelling/collapse by combining UCST and LCST phase transitions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2551-2558. [PMID: 24555801 DOI: 10.1021/la500133y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A variety of slightly cross-linked poly(2-vinylpyridine)-poly(N-isopropylacrylamide) (P2VP-PNIPAM) core-shell microgels with pH- and temperature-responsive characteristic were prepared via seeded emulsion polymerization. Negatively charged sodium 2,6-naphthalenedisulfonate (2,6-NDS) could be internalized into the inner core, followed by formation of (P2VPH(+)/SO3(2-)) supramolecular complex through the electrostatic attractive interaction in acid condition. The thermoresponsive characteristic feature of the (P2VPH(+)/SO3(2-))-PNIPAM core-shell microgels was investigated by laser light scattering and UV-vis measurement, revealing an integration of upper critical solution temperature (UCST) and lower critical solution temperature (LCST) behaviors in the temperature range of 20-55 °C. The UCST performance arised from the compromised electrostatic attractive interaction between P2VPH(+) and 2,6-NDS at elevated temperatures, while the subsequent LCST transition is correlated to the thermo-induced collapse of PNIPAM shells. The controlled release of 2,6-NDS was monitored by static fluorescence spectra as a function of temperature change. Moreover, stopped-flow equipped with a temperature-jump accessory was then employed to assess the dynamic process, suggesting a millisecond characteristic relaxation time of the 2,6-NDS diffusion process. Interestingly, the characteristic relaxation time is independent of the shell cross-link density, whereas it was significantly affected by shell thickness. We believe that these dual thermoresponsive core-shell microgels with thermotunable volume phase transition may augur promising applications in the fields of polymer science and materials, particularly for temperature-triggered release.
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Affiliation(s)
- Jun Yin
- Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, Department of Polymer Material and Engineering, School of Chemical Engineering, Hefei University of Technology , Hefei 230009, China
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19
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Karjalainen E, Aseyev V, Tenhu H. Influence of Hydrophobic Anion on Solution Properties of PDMAEMA. Macromolecules 2014. [DOI: 10.1021/ma5000706] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erno Karjalainen
- Laboratory of Polymer Chemistry,
Department of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
| | - Vladimir Aseyev
- Laboratory of Polymer Chemistry,
Department of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
| | - Heikki Tenhu
- Laboratory of Polymer Chemistry,
Department of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
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20
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Shao H, Wang CF, Zhang J, Chen S. Fabrication of Reversible Phase Transition Polymer Gels toward Metal Ion Sensing. Macromolecules 2014. [DOI: 10.1021/ma402424f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Huan Shao
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Cai-Feng Wang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Jing Zhang
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, 5 Xin Mofan Road, Nanjing 210009, P. R. China
| | - Su Chen
- State Key Laboratory of Materials-Oriented
Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, 5 Xin Mofan Road, Nanjing 210009, P. R. China
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21
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Scheerder J, Langermans H. The synthesis, interfacial, and colloidal properties of waterborne cationic methacrylic co-polymers. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3176-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Li T, Ci T, Chen L, Yu L, Ding J. Salt-induced reentrant hydrogel of poly(ethylene glycol)–poly(lactide-co-glycolide) block copolymers. Polym Chem 2014. [DOI: 10.1039/c3py01107k] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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23
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Li L, Yan M, Zhang G, Wu C. Self-Assembly Assisted Polypolymerization (SAAP) of Diblock Copolymer Chains with Two Reactive Groups at Its Insoluble End. Macromolecules 2013. [DOI: 10.1021/ma401675q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lianwei Li
- Hefei
National Laboratory for Physical Sciences at Microscale, Department
of Chemical Physics, University of Science and Technology of China, Hefei, China 230026
| | - Manqing Yan
- Hefei
National Laboratory for Physical Sciences at Microscale, Department
of Chemical Physics, University of Science and Technology of China, Hefei, China 230026
| | - Guangzhao Zhang
- Hefei
National Laboratory for Physical Sciences at Microscale, Department
of Chemical Physics, University of Science and Technology of China, Hefei, China 230026
| | - Chi Wu
- Hefei
National Laboratory for Physical Sciences at Microscale, Department
of Chemical Physics, University of Science and Technology of China, Hefei, China 230026
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin N.T., Hong Kong
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24
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Rheology and phase behavior of thermo-reversible pentablock terpolymer hydrogel. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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PHOTOPOLYMERIZATION KINETICS AND PHOTO-RHEOLOGICAL BEHAVIORS OF VINYL-MONOMERS. ACTA POLYM SIN 2012. [DOI: 10.3724/sp.j.1105.2012.12217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Han D, Boissiere O, Kumar S, Tong X, Tremblay L, Zhao Y. Two-Way CO2-Switchable Triblock Copolymer Hydrogels. Macromolecules 2012. [DOI: 10.1021/ma3015189] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Dehui Han
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Olivier Boissiere
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Surjith Kumar
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Xia Tong
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Luc Tremblay
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Yue Zhao
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
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27
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Zhang H, Yan Q, Kang Y, Zhou L, Zhou H, Yuan J, Wu S. Fabrication of thermo-responsive hydrogels from star-shaped copolymer with a biocompatible β-cyclodextrin core. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.059] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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28
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Wu Y, Liu X, Wang Y, Guo Z, Feng Y. Synthesis and Aggregation Behaviors of Well-Defined Thermoresponsive Pentablock Terpolymers With Tunable LCST. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200106] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Kang EY, Moon HJ, Joo MK, Jeong B. Thermogelling Chitosan-g-(PAF-PEG) Aqueous Solution As an Injectable Scaffold. Biomacromolecules 2012; 13:1750-7. [DOI: 10.1021/bm300085c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Eun Young Kang
- Department of Bioinspired Science
(WCU), Department
of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea
| | - Hyo Jung Moon
- Department of Bioinspired Science
(WCU), Department
of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea
| | - Min Kyung Joo
- Department of Bioinspired Science
(WCU), Department
of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea
| | - Byeongmoon Jeong
- Department of Bioinspired Science
(WCU), Department
of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea
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30
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Xiao L, Wang H, Qian Q, Jiang X, Liu X, Huang B, Chen Q. Molecular and structural analysis of epoxide-modified recycled poly(ethylene terephthalate) from rheological data. POLYM ENG SCI 2012. [DOI: 10.1002/pen.23175] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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31
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Popescu MT, Tsitsilianis C, Papadakis CM, Adelsberger J, Balog S, Busch P, Hadjiantoniou NA, Patrickios CS. Stimuli-Responsive Amphiphilic Polyelectrolyte Heptablock Copolymer Physical Hydrogels: An Unusual pH-Response. Macromolecules 2012. [DOI: 10.1021/ma300222d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maria-Teodora Popescu
- Department of Chemical Engineering, University of Patras, 26504, Patras, Greece
- Institute of Chemical Engineering and High Temperature Chemical Processes, ICE/HT-FORTH, P.O. Box 1414, 26504 Patras, Greece
| | - Constantinos Tsitsilianis
- Department of Chemical Engineering, University of Patras, 26504, Patras, Greece
- Institute of Chemical Engineering and High Temperature Chemical Processes, ICE/HT-FORTH, P.O. Box 1414, 26504 Patras, Greece
| | - Christine M. Papadakis
- Fachgebiet Physik weicher Materie,
Physikdepartment, Technische Universität München, James-Franck-Strasse 1, 85747 Garching, Germany
| | - Joseph Adelsberger
- Fachgebiet Physik weicher Materie,
Physikdepartment, Technische Universität München, James-Franck-Strasse 1, 85747 Garching, Germany
| | - Sandor Balog
- Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Peter Busch
- Jülich Centre for Neutron
Science at FRM II, Forschungszentrum Jülich GmbH, Lichtenbergstrasse 1, 85747 Garching, Germany
| | | | - Costas S. Patrickios
- Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia,
Cyprus
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32
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Cheng F, Bonder EM, Jäkle F. Luminescent Boron Quinolate Block Copolymers via RAFT Polymerization. Macromolecules 2012. [DOI: 10.1021/ma300063r] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Fei Cheng
- Department of Chemistry, Rutgers University—Newark, 73 Warren Street,
Newark, New Jersey 07102, United States
| | - Edward M. Bonder
- Department of Biological Sciences, Rutgers University—Newark, 195 University Avenue, Newark,
New Jersey 07102, United States
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University—Newark, 73 Warren Street,
Newark, New Jersey 07102, United States
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33
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Yun EJ, Yon B, Joo MK, Jeong B. Cell Therapy for Skin Wound Using Fibroblast Encapsulated Poly(ethylene glycol)-poly(l-alanine) Thermogel. Biomacromolecules 2012; 13:1106-11. [DOI: 10.1021/bm2018596] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Eun Jung Yun
- Department of Bioinspired
Science and Department of Chemistry and Nano
Science, Ewha Womans University, Seoul, 120-750,
Korea
| | - Bora Yon
- Department of Bioinspired
Science and Department of Chemistry and Nano
Science, Ewha Womans University, Seoul, 120-750,
Korea
| | - Min Kyung Joo
- Department of Bioinspired
Science and Department of Chemistry and Nano
Science, Ewha Womans University, Seoul, 120-750,
Korea
| | - Byeongmoon Jeong
- Department of Bioinspired
Science and Department of Chemistry and Nano
Science, Ewha Womans University, Seoul, 120-750,
Korea
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34
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Kang EY, Yeon B, Moon HJ, Jeong B. PEG-l-PAF and PEG-d-PAF: Comparative Study on Thermogellation and Biodegradation. Macromolecules 2012. [DOI: 10.1021/ma202809c] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Eun Young Kang
- Department of Bioinspired Science
(WCU), Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
| | - Bora Yeon
- Department of Bioinspired Science
(WCU), Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
| | - Hyo Jung Moon
- Department of Bioinspired Science
(WCU), Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
| | - Byeongmoon Jeong
- Department of Bioinspired Science
(WCU), Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu,
Seoul, 120-750, Korea
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35
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Oh YJ, In I, Park SY. Temperature-sensitive hydrogel prepared by graft polymerization of N-isopropylacrylamide onto macroradical Pluronic. J IND ENG CHEM 2012. [DOI: 10.1016/j.jiec.2011.11.050] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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36
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Longenecker R, Mu T, Hanna M, Burke NAD, Stöver HDH. Thermally Responsive 2-Hydroxyethyl Methacrylate Polymers: Soluble–Insoluble and Soluble–Insoluble–Soluble Transitions. Macromolecules 2011. [DOI: 10.1021/ma201528r] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ryan Longenecker
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4M1
| | - Tingting Mu
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4M1
| | - Mark Hanna
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4M1
| | - Nicholas A. D. Burke
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4M1
| | - Harald D. H. Stöver
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4M1
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37
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Svobodová H, Wimmer Z, Kolehmainen E. Design, synthesis and stimuli responsive gelation of novel stigmasterol-amino acid conjugates. J Colloid Interface Sci 2011; 361:587-93. [PMID: 21704320 DOI: 10.1016/j.jcis.2011.05.084] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Revised: 05/31/2011] [Accepted: 05/31/2011] [Indexed: 11/20/2022]
Abstract
An efficient synthesis of three novel stigmasterol-amino acid (glycine, L-leucine and L-phenylalanine) conjugates as stimuli responsive gelators is reported. The gelation properties of the prepared compounds were investigated in a variety of organic as well as aqueous solvents. The most striking finding of our investigation was that the hydrochloride salts of the prepared conjugates acted as gelators, whereas the neutral conjugates were either non-gelators or formed only a weak gel in anisole. The hydrochloride salts of stigmasteryl glycinate and L-leucinate form gels in n-alcohols (n=4-10) and in ethane-1,2-diol, and that of stigmasteryl L-phenylalaninate forms gels in aromatic solvents and in tetrachloromethane. These unique properties of the gelators were explored to prepare stimuli responsive, "acid-base" triggered reversible sol-gel transitions. The gelators and their gels were characterized by liquid and solid-state NMR as well as FT-IR. The morphology of their corresponding xerogels was investigated by SEM.
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Affiliation(s)
- Hana Svobodová
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland.
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38
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39
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Multiblock Copolymers of Styrene and Butyl Acrylate via Polytrithiocarbonate-Mediated RAFT Polymerization. Polymers (Basel) 2011. [DOI: 10.3390/polym3020719] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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40
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Ge Z, Zhou Y, Tong Z, Liu S. Thermogelling of double hydrophilic multiblock and triblock copolymers of N,N-dimethylacrylamide and N-isopropylacrylamide: chain architectural and Hofmeister effects. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1143-1151. [PMID: 21218806 DOI: 10.1021/la1048166] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A series of thermoresponsive double hydrophilic (AB)(n) multiblock and ABA triblock copolymers of N,N-dimethylacrylamide (DMA) and N-isopropylacrylamide (NIPAM) with varying sequence lengths were synthesized via successive reversible addition-fragmentation chain transfer (RAFT) polymerizations by employing polytrithiocarbonate as the chain transfer agent. Previously, we reported that multiblock copolymers in dilute aqueous solutions can form either unimolecular or multimolecular micelles at elevated temperatures depending on the relative chain lengths of PDMA and PNIPAM sequences (Zhou et al. Langmuir 2007, 23, 13076-13084). In this follow-up work, we further explored and compared the chain architectural (multiblock vs triblock) and Hofmeister effects (addition of various sodium salts) on the gelation behavior of multiblock and ABA triblock copolymers at high concentrations and attempted to establish a correlation between the aggregation behavior and gelation properties of multiblock copolymers at low and high polymer concentrations, respectively. It was found that only m-PDMA(p)-PNIPAM(q) multiblock copolymers with PDMA and PNIPAM sequence lengths located within a specific range can form physical gels at elevated temperatures. Rheology measurements revealed that multiblock copolymers possess considerably lower critical gelation temperatures (CGT) and higher gel storage modulus, G'(gel), as compared to those of PNIPAM-b-PDMA-b-PNIPAM triblock copolymers possessing comparable sequence lengths. The addition of inorganic sodium salts can effectively facilitate thermogelling for multiblock and triblock copolymers, resulting in decreasing CGTs and critical gelation concentrations (CGCs) in the order of Hofmeister series with increasing hydration capabilities. The unique thermogelling behavior of aqueous multiblock copolymer solutions in the absence and presence of inorganic salts, as compared to that of ABA triblock copolymers, augurs well for their potential applications in various fields such as biomaterials and biomedicines.
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Affiliation(s)
- Zhishen Ge
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
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41
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Wu G, Chen SC, Zhan Q, Wang YZ. Well-Defined Amphiphilic Biodegradable Comb-Like Graft Copolymers: Their Unique Architecture-Determined LCST and UCST Thermoresponsivity. Macromolecules 2011. [DOI: 10.1021/ma102588k] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Gang Wu
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), Sichuan University, Chengdu 610064, China
| | - Si-Chong Chen
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), Sichuan University, Chengdu 610064, China
| | - Qi Zhan
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), Sichuan University, Chengdu 610064, China
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42
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Wang D, Cheng D, Guan Y, Zhang Y. Thermoreversible Hydrogel for In Situ Generation and Release of HepG2 Spheroids. Biomacromolecules 2011; 12:578-84. [DOI: 10.1021/bm101187b] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Dongdong Wang
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Dan Cheng
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ying Guan
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yongjun Zhang
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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43
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Ebeling B, Eggers M, Vana P. Ideal Molecular Weight Distributions of Multiblock Copolymers Prepared via RAFT Polymerization. Macromolecules 2010. [DOI: 10.1021/ma1020424] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bastian Ebeling
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Martin Eggers
- Fakultät für Informatik, Technische Universität München, Barer Str. 21, D-80333 München, Germany
| | - Philipp Vana
- Institut für Physikalische Chemie, Georg-August-Universität Göttingen, Tammannstr. 6, D-37077 Göttingen, Germany
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