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Han F, Wang T, Liu G, Liu H, Xie X, Wei Z, Li J, Jiang C, He Y, Xu F. Materials with Tunable Optical Properties for Wearable Epidermal Sensing in Health Monitoring. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2109055. [PMID: 35258117 DOI: 10.1002/adma.202109055] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/26/2022] [Indexed: 06/14/2023]
Abstract
Advances in wearable epidermal sensors have revolutionized the way that physiological signals are captured and measured for health monitoring. One major challenge is to convert physiological signals to easily readable signals in a convenient way. One possibility for wearable epidermal sensors is based on visible readouts. There are a range of materials whose optical properties can be tuned by parameters such as temperature, pH, light, and electric fields. Herein, this review covers and highlights a set of materials with tunable optical properties and their integration into wearable epidermal sensors for health monitoring. Specifically, the recent progress, fabrication, and applications of these materials for wearable epidermal sensors are summarized and discussed. Finally, the challenges and perspectives for the next generation wearable devices are proposed.
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Affiliation(s)
- Fei Han
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Tiansong Wang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Guozhen Liu
- School of Life and Health Sciences, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
| | - Hao Liu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Xueyong Xie
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Zhao Wei
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Jing Li
- Department of Burns and Plastic Surgery, Second Affiliated Hospital of Air Force Military Medical University, Xi'an, 710038, P. R. China
| | - Cheng Jiang
- School of Life and Health Sciences, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
- Department of Chemistry, University of Oxford, Oxford, OX1 3QZ, UK
| | - Yuan He
- The Second Affiliated Hospital, Xi'an Medical University, Xi'an, 710038, P. R. China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
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Roka N, Kokkorogianni O, Kontoes-Georgoudakis P, Choinopoulos I, Pitsikalis M. Recent Advances in the Synthesis of Complex Macromolecular Architectures Based on Poly(N-vinyl pyrrolidone) and the RAFT Polymerization Technique. Polymers (Basel) 2022; 14:701. [PMID: 35215614 PMCID: PMC8880212 DOI: 10.3390/polym14040701] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/31/2022] [Accepted: 02/09/2022] [Indexed: 11/16/2022] Open
Abstract
Recent advances in the controlled RAFT polymerization of complex macromolecular architectures based on poly(N-vinyl pyrrolidone), PNVP, are summarized in this review article. Special interest is given to the synthesis of statistical copolymers, block copolymers, and star polymers and copolymers, along with graft copolymers and more complex architectures. In all cases, PNVP is produced via RAFT techniques, whereas other polymerization methods can be employed in combination with RAFT to provide the desired final products. The advantages and limitations of the synthetic methodologies are discussed in detail.
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Affiliation(s)
| | | | | | | | - Marinos Pitsikalis
- Industrial Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.R.); (O.K.); (P.K.-G.); (I.C.)
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Yadav R, Kumar S, Kumar K, Venkatesu P. Gold nanospheres/nanorods as highly promising candidates for the hydrophilic/hydrophobic balance of poly(N-vinylcaprolactam): A thoughtful design of nanocomposites. NEW J CHEM 2022. [DOI: 10.1039/d2nj00709f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A thermally induced solubility alterations of widely accepted thermoresponsive polymer poly (N-vinylcaprolactam) (PVCL) tethered to gold nanoparticles (AuNPs) surface is characterized by different biophysical techniques such as steady state fluorescence,...
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Yin F, Nguyen HH, Coutelier O, Destarac M, Lauth-de Viguerie N, Marty JD. Effect of copolymer composition of controlled (N-vinylcaprolactam/N-vinylpyrrolidone) statistical copolymers on formation, stabilization, thermoresponsiveness and catalytic properties of gold nanoparticles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127611] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gopalakrishnan D, Saravanan S, Merckx R, Madan Kumar A, Khamrang T, Velusamy M, Vasanth K, Sunitha S, Hoogenboom R, Maji S, Ganeshpandian M. N, N-Ru(II)- p-cymene-poly( N-vinylpyrrolidone) surface functionalized gold nanoparticles: from organoruthenium complex to nanomaterial for antiproliferative activity. Dalton Trans 2021; 50:8232-8242. [PMID: 34037018 DOI: 10.1039/d1dt00694k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Organometallic Ru-arene complexes are promising as anticancer agents, but the lack of tumor uptake and poor solubility in the physiological medium impede their development. In order to deal with these challenges, we developed gold nanoparticles coated with Ru(arene)-functionalized PNVP-Py, where PNVP-Py is pyridine end-functionalized poly(N-vinylpyrrolidone). It is demonstrated that these particles exhibit higher anti-proliferative activity than the individual organometallic ruthenium(ii) complex of the type [Ru(η6-p-cymene)(NN)Cl]PF6, where NN is bis(4-methoxyphenylimino)acenaphthene, against colorectal adenocarcinoma cell lines. More specifically, a RuII(η6-p-cymene) complex containing a NN bidentate ligand has been prepared and characterized by spectral studies and X-ray crystallography. To tether the isolated complex onto the surface of the AuNPs, PNVP-Py, which contains a pyridine group at one end to coordinate to the Ru-complex and a suitable functional group at the other end to bind on the surface of the AuNPs, has been prepared and utilized to obtain the macromolecular complex [Ru(η6-p-cymene)(NN)(PNVP-Py)]Cl2. Next, stable Ru(p-cym)(NN)(PNVP-Py)@AuNPs were obtained via a ligand exchange reaction of citrate-stabilized AuNPs with a macromolecular complex by a direct 'grafting to' approach and characterized well. Despite the lower DNA cleavage activity, the nanoconjugate exhibits better cytotoxicity than the individual complex against HT-29 colorectal adenocarcinoma cells on account of its enhanced permeability across the cell membrane. The AO/EB staining assay revealed that the nanoconjugate is able to induce an apoptotic mode of cell death, which was further quantitatively evaluated by Annexin V-FITC/PI double assay. An immunofluorescence assay indicated the higher potency of the nanoconjugate to inhibit cyclin D1 gene expression that is required for cancer cell growth. To the best of our knowledge, this is the first report of the modification of an organometallic Ru(arene) complex into a Ru(arene)metallopolymer-gold nanoconjugate for the development of ruthenium-based nanomedicine for cancer treatment.
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Affiliation(s)
- Durairaj Gopalakrishnan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu, Chennai, TN, India.
| | - S Saravanan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu, Chennai, TN, India.
| | - Ronald Merckx
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, Belgium
| | - Arumugam Madan Kumar
- Department of Chemistry, Sathyabama Institute of Science and Technology, Chennai - 600119, India
| | - Themmila Khamrang
- Department of Chemistry, C. I. College, Bishnupur 795126, Manipur, India
| | - Marappan Velusamy
- Department of Chemistry, North Eastern Hill University, Shillong 793022, India
| | - K Vasanth
- Division of Molecular Biology, Interdisciplinary Institute of Indian System of Medicine (IIISM), SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu, Chennai, TN, India
| | - S Sunitha
- Department of Chemistry, Sathyabama Institute of Science and Technology, Chennai - 600119, India
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, Belgium
| | - Samarendra Maji
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu, Chennai, TN, India.
| | - Mani Ganeshpandian
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, Chengalpattu, Chennai, TN, India.
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Dittrich J, Kather M, Holzberger A, Pich A, Gohlke H. Cumulative Submillisecond All-Atom Simulations of the Temperature-Induced Coil-to-Globule Transition of Poly(N-vinylcaprolactam) in Aqueous Solution. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jonas Dittrich
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
- Bioeconomy Science Center (BioSC), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Michael Kather
- DWI-Leibniz-Institute for Interactive Materials, RWTH Aachen University, 52056 Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - Anna Holzberger
- DWI-Leibniz-Institute for Interactive Materials, RWTH Aachen University, 52056 Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - Andrij Pich
- Bioeconomy Science Center (BioSC), Forschungszentrum Jülich, 52425 Jülich, Germany
- DWI-Leibniz-Institute for Interactive Materials, RWTH Aachen University, 52056 Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
- Bioeconomy Science Center (BioSC), Forschungszentrum Jülich, 52425 Jülich, Germany
- John von Neumann Institute for Computing (NIC), Jülich Supercomputing Centre (JSC), Institute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
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7
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Poly (N-Vinyl caprolactam), a thermal responsive support with tunable phase transition temperature for catalyst. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Lu H, Su J, Mamdooh R, Li Y, Stenzel MH. Cellular Uptake of Gold Nanoparticles and Their Movement in 3D Multicellular Tumor Spheroids: Effect of Molecular Weight and Grafting Density of Poly(2‐hydroxyl ethyl acrylate). Macromol Biosci 2019; 20:e1900221. [DOI: 10.1002/mabi.201900221] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 11/11/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Hongxu Lu
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
- Institute for Biomedical Materials and Devices University of Technology Sydney Sydney NSW 2007 Australia
| | - Jiaying Su
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
| | - Russul Mamdooh
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
| | - Yimeng Li
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
| | - Martina H. Stenzel
- Centre for Advanced Macromolecular Design School of Chemistry The University of New South Wales Sydney NSW 2052 Australia
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Heyns IM, Pfukwa R, Bertossi L, Ball LE, Kelland MA, Klumperman B. Thermoresponsive behavior of poly(3-methylene-2-pyrrolidone) derivatives. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.10.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Tao H, Galati E, Kumacheva E. Temperature-Responsive Self-Assembly of Nanoparticles Grafted with UCST Polymer Ligands. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01058] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Huachen Tao
- Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Elizabeth Galati
- Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Eugenia Kumacheva
- Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
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11
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Pereira SO, Barros-Timmons A, Trindade T. Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection. Polymers (Basel) 2018; 10:E189. [PMID: 30966225 PMCID: PMC6415202 DOI: 10.3390/polym10020189] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 02/09/2018] [Accepted: 02/11/2018] [Indexed: 11/17/2022] Open
Abstract
Colloidal gold nanoparticles (Au NPs) have been used in several biological applications, which include the exploitation of size- and shape-dependent Localized Surface Plasmon Resonance (LSPR) in biosensing devices. In order to obtain functional and stable Au NPs in a physiological medium, surface modification and functionalization are crucial steps in these endeavors. Reversible addition-fragmentation chain transfer (RAFT) polymerization meets this need offering the possibility of control over the composition and architecture of polymeric shells coating Au NPs. Furthermore, playing with a careful choice of monomers, RAFT polymerization allows the possibility to design a polymer shell with the desired functional groups aiming at Au based nanocomposites suitable for biorecognition and biotargeting. This review provides important aspects concerning the synthesis and optical properties of Au NPs as well as concepts of RAFT polymerization. Understanding these concepts is crucial to appreciate the chemical strategies available towards RAFT-polymer coated Au core-shell nanostructures, which are here reviewed. Finally, examples of applications in opto-biodetection devices are provided and the potential of responsive "smart" nanomaterials based on such structures can be applied to other biological applications.
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Affiliation(s)
- Sónia O Pereira
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Ana Barros-Timmons
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Tito Trindade
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
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12
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Influence of polymer coating on release of l-dopa from core-shell Fe@Au nanoparticle systems. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4015-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Van Nieuwenhove I, Maji S, Dash M, Van Vlierberghe S, Hoogenboom R, Dubruel P. RAFT/MADIX polymerization of N-vinylcaprolactam in water–ethanol solvent mixtures. Polym Chem 2017. [DOI: 10.1039/c6py02224c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The present paper demonstrates the successful RAFT/MADIX polymerization of N-vinylcaprolactam at ambient temperature in water–ethanol mixtures. An optimum was found for a 1 : 1 ratio of water and ethanol as solvent regarding both polymerization rate and insignificant hydrolysis.
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Affiliation(s)
- Ine Van Nieuwenhove
- Polymer Chemistry and Biomaterials – Group Ghent University
- BE-9000 Ghent
- Belgium
| | - Samarendra Maji
- Supramolecular Chemistry Group – Ghent University
- BE-9000 Ghent
- Belgium
| | - Mamoni Dash
- Polymer Chemistry and Biomaterials – Group Ghent University
- BE-9000 Ghent
- Belgium
| | | | | | - Peter Dubruel
- Polymer Chemistry and Biomaterials – Group Ghent University
- BE-9000 Ghent
- Belgium
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14
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Etchenausia L, Rodrigues AM, Harrisson S, Deniau Lejeune E, Save M. RAFT Copolymerization of Vinyl Acetate and N-Vinylcaprolactam: Kinetics, Control, Copolymer Composition, and Thermoresponsive Self-Assembly. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01451] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Laura Etchenausia
- IPREM, Equipe de Physique et Chimie des Polymères, CNRS, University of Pau & Pays Adour, UMR 5254, 2 avenue du Président Angot, Pau, F-64053, France
| | - Aurélie Malho Rodrigues
- IPREM, Equipe de Physique et Chimie des Polymères, CNRS, University of Pau & Pays Adour, UMR 5254, 2 avenue du Président Angot, Pau, F-64053, France
| | - Simon Harrisson
- Laboratoire
des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118 route de Narbonne 31062 Toulouse Cedex 9, France
| | - Elise Deniau Lejeune
- IPREM, Equipe de Physique et Chimie des Polymères, CNRS, University of Pau & Pays Adour, UMR 5254, 2 avenue du Président Angot, Pau, F-64053, France
| | - Maud Save
- IPREM, Equipe de Physique et Chimie des Polymères, CNRS, University of Pau & Pays Adour, UMR 5254, 2 avenue du Président Angot, Pau, F-64053, France
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15
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Voorhaar L, De Meyer B, Du Prez F, Hoogenboom R. One-Pot Automated Synthesis of Quasi Triblock Copolymers for Self-Healing Physically Crosslinked Hydrogels. Macromol Rapid Commun 2016; 37:1682-1688. [DOI: 10.1002/marc.201600380] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 07/18/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Lenny Voorhaar
- Supramolecular and Polymer Chemistry Research Groups; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
- SIM vzw; Technologiepark 935 9052 Zwijnaarde Belgium
| | - Bernhard De Meyer
- Supramolecular and Polymer Chemistry Research Groups; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - Filip Du Prez
- Supramolecular and Polymer Chemistry Research Groups; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - Richard Hoogenboom
- Supramolecular and Polymer Chemistry Research Groups; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
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16
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Ng WS, Forbes E, Franks GV, Connal LA. Xanthate-Functional Temperature-Responsive Polymers: Effect on Lower Critical Solution Temperature Behavior and Affinity toward Sulfide Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:7443-7451. [PMID: 27434760 DOI: 10.1021/acs.langmuir.6b00211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Xanthate-functional polymers represent an exciting opportunity to provide temperature-responsive materials with the ability to selectively attach to specific metals, while also modifying the lower critical solution temperature (LCST) behavior. To investigate this, random copolymers of poly(N-isopropylacrylamide) (PNIPAM) with xanthate incorporations ranging from 2 to 32% were prepared via free radical polymerization. Functionalization with 2% xanthate increased the LCST by 5 °C relative to the same polymer without xanthate. With increasing xanthate composition, the transition temperature increased and the transition range broadened until a critical composition of the hydrophilic xanthate groups (≥18%) where the transition disappeared completely. The adsorption of the polymers at room temperature onto chalcopyrite (CuFeS2) surfaces increased with xanthate composition, while adsorption onto quartz (SiO2) was negligible. These findings demonstrate the affinity of these functional smart polymers toward copper iron sulfide relative to quartz surfaces, presumably due to the interactions between xanthate and specific metal centers.
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Affiliation(s)
- Wei Sung Ng
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
- CSIRO Mineral Resources Flagship, Clayton, VIC 3168, Australia
| | | | - George V Franks
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
| | - Luke A Connal
- Chemical and Biomolecular Engineering, University of Melbourne , Parkville, VIC 3010, Australia
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17
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Góis JR, Costa JRC, Popov AV, Serra AC, Coelho JFJ. Synthesis of well-defined alkyne terminated poly( N-vinyl caprolactam) with stringent control over the LCST by RAFT. RSC Adv 2016; 6:16996-17007. [PMID: 27019706 PMCID: PMC4803047 DOI: 10.1039/c6ra01014h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The reversible addition-fragmentation chain transfer (RAFT) of N-vinyl caprolactam (NVCL) using two new xanthates with alkyne functionalities is reported. The kinetic data obtained for polymerization of this non-activated monomer using a protected alkyne-terminated RAFT agent (PAT-X1) revealed a linear increase of the polymer molecular weight with the monomer conversion as well as low dispersity (Đ) during the entire course of the polymerization. The system reported here allowed us to enhance the final conversion, diminish Đ and reduce the polymerization temperature compared to the typical values reported in the scarce literature available for the RAFT polymerization of NVCL. The resulting PNVCL was fully characterized using 1H nuclear magnetic resonance (1H NMR), matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS), Fourier-transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC) techniques. The temperature-responsive features of PNVCL in aqueous solutions were fully investigated under different conditions using turbidimetry. The presented strategy allows the synthesis of well-defined PNVCL with sharp and reversible phase transition temperatures around 37 °C. By manipulating the polymer molecular weight, or the solution properties, it is possible to tune the PNVCL phase transition. As a proof-of concept, the alkyne functionalized PNVCL was used to afford new linear block copolymers, by reacting with an azide-terminated poly(ethylene glycol) (N3-PEG) through the copper catalyzed azide-alkyne [3+2] dipolar cycloaddition (CuAAC) reaction. The results presented establish a robust system to afford the synthesis of PNCVL with fine tuned characteristics that will enable more efficient exploration of the remarkable potential of this polymer in biomedical applications.
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Affiliation(s)
- Joana R Góis
- CEMUC, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. ; Tel:+351 239 798 744;
| | - João R C Costa
- CEMUC, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. ; Tel:+351 239 798 744;
| | - Anatoliy V Popov
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Arménio C Serra
- CEMUC, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. ; Tel:+351 239 798 744;
| | - Jorge F J Coelho
- CEMUC, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. ; Tel:+351 239 798 744;
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18
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Giliomee J, Pfukwa R, Gule NP, Klumperman B. Smart block copolymers of PVP and an alkylated PVP derivative: synthesis, characterization, thermoresponsive behaviour and self-assembly. Polym Chem 2016. [DOI: 10.1039/c5py01609f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stimuli responsive block copolymers of biocompatible poly(3-ethyl-N-vinylpyrrolidone) and poly(N-vinylpyrrolidone), i.e. EPVP–PVP, were readily synthesized via RAFT-mediated polymerization.
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Affiliation(s)
- Johnel Giliomee
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
| | - Rueben Pfukwa
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
| | - Nonjabulo P. Gule
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
| | - Bert Klumperman
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
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19
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Yuan H, Chi H, Yuan W. A star-shaped amphiphilic block copolymer with dual responses: synthesis, crystallization, self-assembly, redox and LCST–UCST thermoresponsive transition. Polym Chem 2016. [DOI: 10.1039/c6py00702c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The micelles/aggregates that were self-assembled from a star-shaped copolymer presented redox-responsive behaviour and LCST–UCST thermoresponsive transition.
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Affiliation(s)
- Hua Yuan
- School of Materials Science and Engineering
- Key Laboratory of Advanced Civil Materials of Ministry of Education
- Tongji University
- People's Republic of China
| | - Hai Chi
- School of Materials Science and Engineering
- Key Laboratory of Advanced Civil Materials of Ministry of Education
- Tongji University
- People's Republic of China
| | - Weizhong Yuan
- School of Materials Science and Engineering
- Key Laboratory of Advanced Civil Materials of Ministry of Education
- Tongji University
- People's Republic of China
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20
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Maji S, Cesur B, Zhang Z, De Geest BG, Hoogenboom R. Poly(N-isopropylacrylamide) coated gold nanoparticles as colourimetric temperature and salt sensors. Polym Chem 2016. [DOI: 10.1039/c5py01959a] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermoresponsive PNIPAM coated AuNPs having dual stabilisation by the polymer chains and the charges, has been utilised for the development of temperature and salt sensors.
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Affiliation(s)
- Samarendra Maji
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Belgin Cesur
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Zhiyue Zhang
- Department of Pharmaceutics
- Ghent University
- 9000 Ghent
- Belgium
| | | | - Richard Hoogenboom
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
- Belgium
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