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Han J, Duan Z, Liu C, Liu Y, Zhao X, Wang B, Cao S, Wu D. Hyperbranched Polymeric 19F MRI Contrast Agents with Long T2 Relaxation Time Based on β-Cyclodextrin and Phosphorycholine. Biomacromolecules 2024; 25:5860-5872. [PMID: 39113312 DOI: 10.1021/acs.biomac.4c00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/10/2024]
Abstract
19F magnetic resonance imaging (19F MRI) is gaining attention as an emerging diagnostic technology. Effective 19F MRI contrast agents (CAs) for in vivo applications require a long transverse (or spin-spin) relaxation time (T2), short longitudinal (or spin-lattice) relaxation time (T1), high fluorine content, and excellent biocompatibility. Here, we present a novel hyperbranched polymeric 19F MRI CA based on β-cyclodextrin and phosphorylcholine. The influence of the branching degree and fluorine content on T2 was thoroughly investigated. Results demonstrated a maximum fluorine content of 11.85% and a T2 of 612 ms. This hyperbranched polymeric 19F MRI CA exhibited both great biocompatibility against cells and organs of mice and high-performance imaging capabilities both in vitro and in vivo. The research provides positive insights into the synthesis strategies, topological design, and selection of fluorine tags for 19F MRI CAs.
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Affiliation(s)
- Jialei Han
- School of Biomedical Engineering, Sun Yat-Sen University of Shenzhen Campus, Shenzhen 518107, China
| | - Ziwei Duan
- School of Biomedical Engineering, Sun Yat-Sen University of Shenzhen Campus, Shenzhen 518107, China
| | - Changjiang Liu
- School of Biomedical Engineering, Sun Yat-Sen University of Shenzhen Campus, Shenzhen 518107, China
| | - Yadong Liu
- School of Biomedical Engineering, Sun Yat-Sen University of Shenzhen Campus, Shenzhen 518107, China
| | - Xinyu Zhao
- School of Biomedical Engineering, Sun Yat-Sen University of Shenzhen Campus, Shenzhen 518107, China
| | - Bo Wang
- School of Biomedical Engineering, Sun Yat-Sen University of Shenzhen Campus, Shenzhen 518107, China
| | - Shuaishuai Cao
- Shenzhen University General Hospital, Shenzhen 518055, China
| | - Dalin Wu
- School of Biomedical Engineering, Sun Yat-Sen University of Shenzhen Campus, Shenzhen 518107, China
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2
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Sollka L, Lienkamp K. Progress in the Free and Controlled Radical Homo- and Co-Polymerization of Itaconic Acid Derivatives: Toward Functional Polymers with Controlled Molar Mass Distribution and Architecture. Macromol Rapid Commun 2020; 42:e2000546. [PMID: 33270308 DOI: 10.1002/marc.202000546] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/17/2020] [Indexed: 01/23/2023]
Abstract
Polymeric derivatives of itaconic acid are becoming increasingly more interesting for research and industry because itaconic acid is accessible from renewable resources. In spite of the structural similarity of poly(itaconic acid derivatives) to poly(methacrylates), they are much less reactive, homopolymerize only sluggishly by free radical polymerization (FRP), and are often obtained with low molar masses and conversions. This has so far limited their use. The reasons for the low reactivity of itaconic acid derivatives (including itaconimides, diitaconates, and diitaconamides) are combined steric and electronic effects, as demonstrated by the body of literature on the FRP homopolymerization kinetics of these monomers which is summarized herein. These problems can be solved to a large extent by using controlled radical polymerization (CRP) techniques, notably atom transfer radical polymerization (ATRP) and reversible addition and fragmentation chain transfer radical polymerization (RAFT). By optimizing the reaction conditions for the ATRP and RAFT of itaconic acid derivatives, in particular the reaction temperature, linear relations between molar mass and conversion are obtained in many cases, and homopolymers with high molar masses and reasonably narrow polydispersity indices become accessible. This review presents the state-of-the-art FRP and CRP of itaconic acid derivatives, and highlights functional polymers obtained by these methods.
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Affiliation(s)
- Lea Sollka
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 105, Freiburg, 79110, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, Freiburg, 79110, Germany
| | - Karen Lienkamp
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 105, Freiburg, 79110, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), University of Freiburg, Georges-Köhler-Allee 105, Freiburg, 79110, Germany
- Department of Materials Science and Engineering, Universität des Saarlandes, Campus, Saarbrücken, 66123, Germany
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3
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Tuan HNA, Nhu VTT. Synthesis and Properties of pH-Thermo Dual Responsive Semi-IPN Hydrogels Based on N, N'-Diethylacrylamide and Itaconamic Acid. Polymers (Basel) 2020; 12:E1139. [PMID: 32429371 PMCID: PMC7285170 DOI: 10.3390/polym12051139] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 11/16/2022] Open
Abstract
A series of semi-interpenetrating polymer network (semi-IPN) hydrogels based on N,N'-diethylacrylamide (DEA) and itaconamic acid (IAM) were synthesized by changing the molar ratio of linear copolymer P(DEA-co-IAM) and DEA monomer. Linear copolymer P(DEA-co-IAM) was introduced into a solution of DEA monomer to prepare pH-thermo dual responsive P(DEA-co-IAM)/PDEA semi-IPN hydrogels. The thermal gravimetric analysis (TGA) revealed that the semi-IPN hydrogel has a higher thermal stability than the conventional hydrogel, while the interior morphology by scanning electron microscopy (SEM) showed a porous structure with the pore sizes could be controlled by changing the ratio of linear copolymer in the obtained hydrogels. The oscillatory parallel-plate rheological measurements and compression tests demonstrated a viscoelastic behavior and superior mechanical properties of the semi-IPN hydrogels. Besides, the lower critical solution temperature (LCST) of the linear copolymers increased with the increase of IAM content in the feed, while the semi-IPN hydrogels increased LCSTs with the increase of linear copolymer content introduced. The pH-thermo dual responsive of the hydrogels was investigated using the swelling behavior in various pH and temperature conditions. Finally, the swelling and deswelling rate of the hydrogels were also studied. The results indicated that the pH-thermo dual responsive semi-IPN hydrogels were synthesized successfully and may be a potential material for biomedical, drug delivery or absorption applications. The further applications of semi-IPN hydrogels are being conducted.
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Affiliation(s)
- Huynh Nguyen Anh Tuan
- Faculty of Chemical and Food Technology, HCMC University of Technology and Education, #1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc District, Ho Chi Minh City 70000, Vietnam;
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4
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Przybyla MA, Yilmaz G, Becer CR. Natural cyclodextrins and their derivatives for polymer synthesis. Polym Chem 2020. [DOI: 10.1039/d0py01464h] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A toolbox of cyclodextrin derivatives, synthetic strategies for the preparation of cyclodextrin-polymer conjugates using various polymerisation techniques and representative applications of such conjugates are discussed.
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Affiliation(s)
| | - Gokhan Yilmaz
- Department of Chemistry
- University of Warwick
- Coventry
- UK
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5
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Zarghami S, Xiao Y, Wagner P, Florea L, Diamond D, Officer DL, Wagner K. Dual Droplet Functionality: Phototaxis and Photopolymerization. ACS APPLIED MATERIALS & INTERFACES 2019; 11:31484-31489. [PMID: 31365224 DOI: 10.1021/acsami.9b08697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The use of phototaxis to move droplets in liquids offers the opportunity to emulate natural processes such as the controlled transport of materials in fluidic environments and to undertake chemistry at specific locations. We have developed a photoactive organic droplet, whose movement in aqueous solution is driven by a photoinitiator, as a result of a light-induced reaction within the droplet generating a Marangoni flow. The photoinitiator not only drives the droplet motion but can also be used to initiate polymerization following transfer of the droplet to a specific location and its merging with a monomer-containing droplet. The same light is used to control the transport of the droplet and the polymerization. The efficacy of this droplet transport and reactor system has been demonstrated by the site-specific underwater polymerization of N-isopropylacrylamide to repair a leaking vessel and the adhesion of two materials together.
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Affiliation(s)
| | | | | | - Larisa Florea
- Advanced Materials and BioEngineering Research (AMBER), Centre for Research on Adaptive Nanostructures and Nanodevices and School of Chemistry , Trinity College Dublin , Dublin 2 , Ireland
| | - Dermot Diamond
- Insight Centre for Data Analytics, National Centre for Sensor Research , Dublin City University , Dublin 9 , Ireland
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Zhang S, Ju X, Zhou X, Pu X, Peng H, Wang W, Xie R, Liu Z, Chu L. Preparation and Characterization of Novel Low‐Temperature/pH Dual‐Responsive Poly(
N
‐isopropylacrylamide‐
co
‐1
H
‐benzimidazolyl‐ethyl acrylate) Copolymers. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Shu‐Gui Zhang
- School of Chemical EngineeringSichuan University Chengdu 610065 China
| | - Xiao‐Jie Ju
- School of Chemical EngineeringSichuan University Chengdu 610065 China
- State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu 610065 China
| | - Xing‐Long Zhou
- School of Chemical EngineeringSichuan University Chengdu 610065 China
| | - Xing‐Qun Pu
- School of Chemical EngineeringSichuan University Chengdu 610065 China
| | - Han‐Yu Peng
- School of Chemical EngineeringSichuan University Chengdu 610065 China
| | - Wei Wang
- School of Chemical EngineeringSichuan University Chengdu 610065 China
- State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu 610065 China
| | - Rui Xie
- School of Chemical EngineeringSichuan University Chengdu 610065 China
- State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu 610065 China
| | - Zhuang Liu
- School of Chemical EngineeringSichuan University Chengdu 610065 China
- State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu 610065 China
| | - Liang‐Yin Chu
- School of Chemical EngineeringSichuan University Chengdu 610065 China
- State Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu 610065 China
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7
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Seidi F, Shamsabadi AA, Amini M, Shabanian M, Crespy D. Functional materials generated by allying cyclodextrin-based supramolecular chemistry with living polymerization. Polym Chem 2019. [DOI: 10.1039/c9py00495e] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclodextrin molecules are cyclic oligosaccharides that display a unique structure including an inner side and two faces on their outer sides.
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Affiliation(s)
- Farzad Seidi
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong 21210
- Thailand
| | | | - Mojtaba Amini
- Department of Chemistry
- Faculty of Science
- University of Maragheh
- Maragheh
- Iran
| | - Meisam Shabanian
- Faculty of Chemistry and Petrochemical Engineering
- Standard Research Institute (SRI)
- Karaj
- Iran
| | - Daniel Crespy
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong 21210
- Thailand
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8
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Sahiner N. Super macroporous poly(N-isopropyl acrylamide) cryogel for separation purpose. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4326] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Nurettin Sahiner
- Department of Chemistry and Nanoscience and Technology Research and Application Center (NANORAC), Faculty of Science and Arts; Canakkale Onsekiz Mart University; Terzioglu Campus 17100 Canakkale Turkey
- Chemical and Biomolecular Engineering and Physics and Engineering Physics Departments; Tulane University; 2001 Percival Stern Hall New Orleans LA 70118 USA
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9
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Rwei SP, Chiang WY, Way TF, Tuan HNA, Chang YC. Study of theThermo-/pH-Sensitivity of Stereo-Controlled Poly( N-isopropylacrylamide-co-IAM) Copolymers via RAFT Polymerization. Polymers (Basel) 2018; 10:polym10050512. [PMID: 30966546 PMCID: PMC6415441 DOI: 10.3390/polym10050512] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/05/2018] [Accepted: 05/06/2018] [Indexed: 12/03/2022] Open
Abstract
In this work, a smart copolymer, Poly(nipam-co-IAM) was synthesized by copolymerization of N-isopropylacrylamide (nipam) and itaconamic acid (IAM) through reversible addition-fragmentation chain-transfer (RAFT) polymerization. Poly(nipam-co-IAM) has been studied previously synthesized via radical polymerization without stereo-control, and this work used cumyl dithiobenzoate and Ytterbium(III) trifluoromethanesulfonate as RAFT and stereo-control agents, respectively. The stereo-control result in this work shows that tacticity affects the lower critical solution temperature (LCST) and/or the profile of phase separation of Poly(nipam-co-IAM). In the pH 7 and pH 10 buffer solutions, the P(nipam-co-IAM) copolymer solutions showed soluble–insoluble–soluble transitions, i.e., both LCST and upper critical solution temperature (UCST) transitions, which had not been found previously, and the insoluble to soluble transition (redissolved behavior) occurred at a relatively low temperature. The insoluble to soluble transition of P(nipam-co-IAM) in alkaline solution occurred at a temperature of less than 45 °C. However, the redissolved behavior of P(nipam-co-IAM) was found only in the pH 7 and pH 10 buffer solutions and this redissolved behavior was more prominent for the atactic copolymers than in the isotactic-rich ones. In addition, the LCST results under our experimental range of meso content did not show a significant difference between the isotactic-rich and the atactic P(nipam-co-IAM). Further study on the soluble-insoluble-soluble (S-I-S) transition and the application thereof for P(nipam-co-IAM) copolymers will be conducted.
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Affiliation(s)
- Syang-Peng Rwei
- Institute of Organic and Polymeric Materials and Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan.
| | - Whe-Yi Chiang
- Institute of Organic and Polymeric Materials and Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan.
| | - Tun-Fun Way
- Institute of Organic and Polymeric Materials and Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan.
| | - Huynh Nguyen Anh Tuan
- Institute of Organic and Polymeric Materials and Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan.
| | - Ya-Chin Chang
- Institute of Organic and Polymeric Materials and Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan.
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10
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Rwei SP, Tuan HNA, Chiang WY, Way TF. Synthesis and Characterization of pH and Thermo Dual-Responsive Hydrogels with a Semi-IPN Structure Based on N-Isopropylacrylamide and Itaconamic Acid. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E696. [PMID: 29710793 PMCID: PMC5978073 DOI: 10.3390/ma11050696] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 04/22/2018] [Accepted: 04/24/2018] [Indexed: 11/28/2022]
Abstract
A series of semi-interpenetrating polymer network (semi-IPN) hydrogels were synthesized and investigated in this study. Linear copolymer poly(N-isopropylacrylamide-co-itaconamic acid) p(NIPAM-co-IAM), which is formed by copolymerization of N-isopropylacrylamide (NIPAM) and itaconamic acid (IAM, 4-amino-2-ethylene-4-oxobutanoic acid), was introduced into a solution of NIPAM to form a series of pH and thermo dual-responsive p(NIPAM-co-IAM)/pNIPAM semi-IPN hydrogels by free radical polymerization. The structural, morphological, chemical, and physical properties of the linear copolymer and semi-IPN hydrogels were investigated. The semi-IPN hydrogel showed high thermal stability according to thermal gravimetric analyzer (TGA). Scanning electronic microscopy (SEM) images showed that the pore size was in the range of 119~297 µm and could be controlled by the addition ratio of the linear copolymer in the semi-IPN structure. The addition of linear copolymer increased the fracture strain from 57.5 ± 2.9% to 91.1 ± 4.9% depending on the added amount, while the compressive modulus decreased as the addition increased. Moreover, the pH and thermo dual-responsive properties were investigated using differential scanning calorimetry (DSC) and monitoring the swelling behavior of the hydrogels. In deionized (DI) water, the equilibrium swelling ratio of the hydrogels decreased as the temperature increased from 20 °C to 50 °C, while it varied in various pH buffer solutions. In addition, the swelling and deswelling rates of the hydrogels also significantly increased. The results indicate that the novel pH-thermo dual-responsive semi-IPN hydrogels were synthesized successfully and may be a potential material for biomedical, drug delivery, or absorption application.
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Affiliation(s)
- Syang-Peng Rwei
- Institute of Organic and Polymeric Materials, Research and Development Center for Smart Textile Technology, National Taipei University of Technology, #1, Sec 3, Chung-Hsiao E. Rd, Taipei, Taiwan.
| | - Huynh Nguyen Anh Tuan
- Institute of Organic and Polymeric Materials, Research and Development Center for Smart Textile Technology, National Taipei University of Technology, #1, Sec 3, Chung-Hsiao E. Rd, Taipei, Taiwan.
| | - Whe-Yi Chiang
- Institute of Organic and Polymeric Materials, Research and Development Center for Smart Textile Technology, National Taipei University of Technology, #1, Sec 3, Chung-Hsiao E. Rd, Taipei, Taiwan.
| | - Tun-Fun Way
- Institute of Organic and Polymeric Materials, Research and Development Center for Smart Textile Technology, National Taipei University of Technology, #1, Sec 3, Chung-Hsiao E. Rd, Taipei, Taiwan.
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11
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Chen Y, Gao Y, da Silva LP, Pirraco RP, Ma M, Yang L, Reis RL, Chen J. A thermo-/pH-responsive hydrogel (PNIPAM-PDMA-PAA) with diverse nanostructures and gel behaviors as a general drug carrier for drug release. Polym Chem 2018. [DOI: 10.1039/c8py00838h] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The aim of this research was to develop thermo- and pH-responsive hydrogels based on H-bonds for the sustained release of the small-molecule model drug Methylene Blue (MB).
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Affiliation(s)
- Yan Chen
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Yuting Gao
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Lucília P. da Silva
- 3B's Research Group - Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco, Guimarães
| | - Rogério P. Pirraco
- 3B's Research Group - Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco, Guimarães
| | - Mengdi Ma
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Liming Yang
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Rui L. Reis
- 3B's Research Group - Biomaterials
- Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco, Guimarães
| | - Jie Chen
- Department of Chemical Engineering and technology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
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12
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A dual stimuli-responsive amphiphilic polymer: reversible self-assembly and rate-controlled drug release. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4156-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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13
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Patil SS, Wadgaonkar PP. Temperature and pH dual stimuli responsive PCL-b-PNIPAAm block copolymer assemblies and the cargo release studies. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28508] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sachin S. Patil
- Polymer Science and Engineering Division; CSIR-National Chemical Laboratory; Pune Maharashtra 411008 India
| | - Prakash P. Wadgaonkar
- Polymer Science and Engineering Division; CSIR-National Chemical Laboratory; Pune Maharashtra 411008 India
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14
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Li J, Yang L, Fan X, Zhang J, Wang F, Wang Z. Temperature and glucose dual-responsive carriers bearing poly(N-isopropylacrylamide) and phenylboronic acid for insulin-controlled release: A review. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1263954] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jiaxing Li
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun, China
| | - Lei Yang
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun, China
| | - Xiaoguang Fan
- College of Engineering, Shenyang Agricultural University, Shenyang, China,
| | - Jing Zhang
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun, China
| | - Fei Wang
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun, China
| | - Zhanyong Wang
- School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun, China
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15
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Rwei SP, Anh THN, Chiang WY, Way TF, Hsu YJ. Synthesis and Drug Delivery Application of Thermo- and pH-Sensitive Hydrogels: Poly(β-CD-co-N-Isopropylacrylamide-co-IAM). MATERIALS 2016; 9:ma9121003. [PMID: 28774121 PMCID: PMC5456989 DOI: 10.3390/ma9121003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 12/07/2016] [Accepted: 12/08/2016] [Indexed: 11/29/2022]
Abstract
Copolymerization of N-isopropylacrylamide (NIPAM), itaconamic acid (IAM; 4-amino-2-methylene-4-oxobutanoic acid) and β-cyclodextrin was investigated in this study. β-cyclodextrin was at first modified by reacting with allyl glycidyl ether to substitute its OH end groups with moieties containing double bonds to facilitate the subsequent radical copolymerization with NIPAM and IAM. It was reported that poly(NIPAM-IAM) can respond to the change of temperature as well as pH value. In this study, the structure of β-cyclodextrin was introduced to poly(NIPAM-IAM) copolymers because of its cavity structure capable of encapsulating a variety of drug molecules. The tri-component copolymers, poly(CD-NIPAM-IAM), were synthesized with different monomeric ratios of NIPAM/IAM/β-CD and the hydrogels of the tri-component copolymers were also synthesized by additionally adding N,N′-methylenebisacrylamide as a cross-linking agent. The results show that the lower critical solution temperature (LCST) of the copolymer (or hydrogel) increases as the molar fraction of IAM increases. The transmission electron microscopic (TEM) images of linear copolymers (no cross-linking) show that molecules undergo self-assembly to have a distinct core–shell structure, compared to poly(CD-NIPAM) which contains no IAM. On the other hand, the scanning electron microscopic (SEM) images of hydrogels show that the pores gradually become sheet-like structures as the molar fraction of IAM increases to enhance the water absorption capacity. In order to exhibit the thermal and pH sensitivities of poly(CD-NIPAM-IAM) as the drug carrier, the drug release of the newly synthesized hydrogels at 37 °C and different pH values, pH = 2 and pH = 7.4, was investigated using atorvastatin which was used primarily as a lipid-lowering drug. The drug release experimental result shows that poly(CD-NIPAM-IAM) as a drug carrier was pH-sensitive and has the largest release rate at pH = 7.4 at 37 °C, indicating it is useful to release drugs in a neutral or alkaline (intestinal) environment.
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Affiliation(s)
- Syang-Peng Rwei
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan.
| | - Tuan Huynh Nguyen Anh
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan.
| | - Whe-Yi Chiang
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan.
| | - Tun-Fun Way
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan.
| | - Yung-Jia Hsu
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan.
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16
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Ren JM, McKenzie TG, Fu Q, Wong EHH, Xu J, An Z, Shanmugam S, Davis TP, Boyer C, Qiao GG. Star Polymers. Chem Rev 2016; 116:6743-836. [PMID: 27299693 DOI: 10.1021/acs.chemrev.6b00008] [Citation(s) in RCA: 526] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent advances in controlled/living polymerization techniques and highly efficient coupling chemistries have enabled the facile synthesis of complex polymer architectures with controlled dimensions and functionality. As an example, star polymers consist of many linear polymers fused at a central point with a large number of chain end functionalities. Owing to this exclusive structure, star polymers exhibit some remarkable characteristics and properties unattainable by simple linear polymers. Hence, they constitute a unique class of technologically important nanomaterials that have been utilized or are currently under audition for many applications in life sciences and nanotechnologies. This article first provides a comprehensive summary of synthetic strategies towards star polymers, then reviews the latest developments in the synthesis and characterization methods of star macromolecules, and lastly outlines emerging applications and current commercial use of star-shaped polymers. The aim of this work is to promote star polymer research, generate new avenues of scientific investigation, and provide contemporary perspectives on chemical innovation that may expedite the commercialization of new star nanomaterials. We envision in the not-too-distant future star polymers will play an increasingly important role in materials science and nanotechnology in both academic and industrial settings.
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Affiliation(s)
- Jing M Ren
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Thomas G McKenzie
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Qiang Fu
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Edgar H H Wong
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Zesheng An
- Institute of Nanochemistry and Nanobiology, College of Environmental and Chemical Engineering, Shanghai University , Shanghai 2000444, People's Republic of China
| | - Sivaprakash Shanmugam
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Thomas P Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash Institute of Pharmaceutical Sciences, Monash University , Parkville, Victoria 3052, Australia.,Department of Chemistry, University of Warwick , Coventry CV4 7AL, United Kingdom
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine, School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Greg G Qiao
- Polymer Science Group, Department of Chemical and Biomolecular Engineering, The University of Melbourne , Parkville, Victoria 3010, Australia
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17
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Core Cross-linked Star Polymers for Temperature/pH Controlled Delivery of 5-Fluorouracil. J CHEM-NY 2016. [DOI: 10.1155/2016/4543191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
RAFT polymerization with cross-linking was used to prepare core cross-linked star polymers bearing temperature sensitive arms. The arms consisted of a diblock copolymer containingN-isopropylacrylamide (NIPAAm) and 4-methacryloyloxy benzoic acid (4MBA) in the temperature sensitive block and poly(hexyl acrylate) forming the second hydrophobic block, while ethyleneglycol dimethacrylate was used to form the core. The acid comonomer provides pH sensitivity to the arms and also increases the transition temperature of polyNIPAAm to values in the range of 40 to 46°C. Light scattering and atomic force microscopy studies suggest that loose core star polymers were obtained. The star polymers were loaded with 5-fluorouracil (5-FU), an anticancer agent, in values of up to 30 w/w%.In vitrorelease experiments were performed at different temperatures and pH values, as well as with heating and cooling temperature cycles. Faster drug release was obtained at 42°C or pH 6, compared to normal physiological conditions (37°C, pH 7.4). The drug carriers prepared acted as nanopumps changing the release kinetics of 5-FU when temperatures cycles were applied, in contrast with release rates at a constant temperature. The prepared core cross-linked star polymers represent advanced drug delivery vehicles optimized for 5-FU with potential application in cancer treatment.
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18
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Rwei SP, Chuang YY, Way TF, Chiang WY. Thermosensitive copolymer synthesized by controlled living radical polymerization: Phase behavior of diblock copolymers of poly(N-isopropyl acrylamide) families. J Appl Polym Sci 2015. [DOI: 10.1002/app.43224] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Syang-Peng Rwei
- Institute of Organic and Polymeric Materials; National Taipei University of Technology; Taipei Taiwan, Republic of China
| | - Yo-Ying Chuang
- Institute of Organic and Polymeric Materials; National Taipei University of Technology; Taipei Taiwan, Republic of China
| | - Tun-Fun Way
- Material and Chemical Research Laboratories; Industrial Technology Research Institute; Taiwan, Republic of China
| | - Whe-Yi Chiang
- Institute of Organic and Polymeric Materials; National Taipei University of Technology; Taipei Taiwan, Republic of China
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19
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Synthesis and characterization of hyperbranched copolymers hyper-g-(NIPAAm-co-IAM) via ATRP. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3775-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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