251
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Guerre M, Ameduri B, Ladmiral V. One-pot synthesis of poly(vinylidene fluoride) methacrylate macromonomers via thia-Michael addition. Polym Chem 2016. [DOI: 10.1039/c5py01651g] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comparison of two one-pot methods to prepare methacrylate PVDF-macromonomers and the synthesis of PVDF-containing block copolymers.
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Affiliation(s)
- Marc Guerre
- Institut Charles Gerhardt
- Ingénierie et Architectures Macromoléculaires
- UMR 5253 CNRS
- UM
- ENSCM
| | - Bruno Ameduri
- Institut Charles Gerhardt
- Ingénierie et Architectures Macromoléculaires
- UMR 5253 CNRS
- UM
- ENSCM
| | - Vincent Ladmiral
- Institut Charles Gerhardt
- Ingénierie et Architectures Macromoléculaires
- UMR 5253 CNRS
- UM
- ENSCM
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252
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Yang X, Chen D, Zhao H. Silica particles with immobilized protein molecules and polymer brushes. Acta Biomater 2016; 29:446-454. [PMID: 26597547 DOI: 10.1016/j.actbio.2015.10.038] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 10/15/2015] [Accepted: 10/23/2015] [Indexed: 12/21/2022]
Abstract
In this research thermo-responsive polymer brushes and protein molecules are immobilized on the surfaces of silica particles by covalent bonds. Pyridyl disulfide functionalized silica particles are prepared by surface chemical reactions, and thiol-terminated poly(oligo(ethylene glycol) monomethyl ether methacrylate) (POEGMA) and bovine serum albumin (BSA) molecules are grafted to the silica particles by thiol-disulfide exchange reactions. X-ray photoelectron spectroscopy, thermogravimetric analysis, dynamic light scattering, confocal laser scanning microscopy, far-UV circular dichroism and transmission electron microscopy are employed to characterize the polymer/protein mixed layers on silica particles. The POEGMA brushes not only protect the protein molecules but also improve the dispersibility of the hybrid particles in aqueous solution. The activity of the immobilized BSA protein can be controlled by the thermo-responsive POEGMA brushes. At a temperature below the lower critical solution temperature (LCST) of POEGMA, BSA activity is not affected by polymer brushes; however, BSA activity decreases significantly at a temperature above the LCST of POEGMA. STATEMENT OF SIGNIFICANCE In this research, both protein molecules and polymer brushes were anchored to the silica particles by highly efficient thiol-disulfide exchange reaction, and their grafting density can easily be determined by UV-vis. Owing to the temperature-sensitive nature of the grafted polymer brushes, the protein molecules can be protected by the collapsed polymer brushes above the LCST, and their catalytic activity can be controlled. Moreover, the protein molecules on silica particles can be easily separated from the solution and can be reused.
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Affiliation(s)
- Xiaona Yang
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Department of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Dawei Chen
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Department of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Hanying Zhao
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Department of Chemistry, Nankai University, Tianjin 300071, PR China.
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253
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Zhang Z, Vanparijs N, Vandewalle S, Du Prez FE, Nuhn L, De Geest BG. Squaric ester amides as hydrolysis-resistant functional groups for protein-conjugation of RAFT-derived polymers. Polym Chem 2016. [DOI: 10.1039/c6py01438k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report on the synthesis of amine-reactive polymers, for the purpose of protein conjugation.
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Affiliation(s)
- Zhiyue Zhang
- Department of Pharmaceutics
- Ghent University
- Belgium
| | | | - Stef Vandewalle
- Department of Organic and Macromolecular Chemistry
- Ghent University
- Belgium
| | - Filip E. Du Prez
- Department of Organic and Macromolecular Chemistry
- Ghent University
- Belgium
| | - Lutz Nuhn
- Department of Pharmaceutics
- Ghent University
- Belgium
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254
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Li X, Mastan E, Wang WJ, Li BG, Zhu S. Progress in reactor engineering of controlled radical polymerization: a comprehensive review. REACT CHEM ENG 2016. [DOI: 10.1039/c5re00044k] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Controlled radical polymerization (CRP) represents an important advancement in polymer chemistry. It allows synthesis of polymers with well-controlled chain microstructures.
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Affiliation(s)
- Xiaohui Li
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- PR China
- Department of Chemical Engineering
| | - Erlita Mastan
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
| | - Wen-Jun Wang
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- PR China
| | - Bo-Geng Li
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- PR China
| | - Shiping Zhu
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
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255
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Gupta J, Keddie DJ, Wan C, Haddleton DM, McNally T. Functionalisation of MWCNTs with poly(lauryl acrylate) polymerised by Cu(0)-mediated and RAFT methods. Polym Chem 2016. [DOI: 10.1039/c6py00522e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We report the thermal and thermo-mechanical stability of poly(lauryl acrylate) P[LA] synthesised using RAFT and Cu(0)-mediated polymerisation methods and their interactions with multi-walled carbon nanotubes.
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Affiliation(s)
- Jaipal Gupta
- International Institute for Nanocomposites Manufacturing (IINM)
- WMG
- University of Warwick
- UK
| | - Daniel J. Keddie
- School of Biology
- Chemistry and Forensic Science
- University of Wolverhampton
- UK
| | - Chaoying Wan
- International Institute for Nanocomposites Manufacturing (IINM)
- WMG
- University of Warwick
- UK
| | | | - Tony McNally
- International Institute for Nanocomposites Manufacturing (IINM)
- WMG
- University of Warwick
- UK
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256
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Adnan NNM, Cheng YY, Ong NMN, Kamaruddin TT, Rozlan E, Schmidt TW, Duong HTT, Boyer C. Effect of gold nanoparticle shapes for phototherapy and drug delivery. Polym Chem 2016. [DOI: 10.1039/c6py00465b] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this study, we compared three different hybrid gold nanoparticle shapes (spherical, rod and star) for photothermal therapy and the delivery of doxorubicin.
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Affiliation(s)
- Nik N. M. Adnan
- Australian Centre for Nanomedicine
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
| | - Y. Y. Cheng
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - Nur M. N. Ong
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
| | - Tuan T. Kamaruddin
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
| | - Eliza Rozlan
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
| | | | - Hien T. T. Duong
- Australian Centre for Nanomedicine
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
| | - Cyrille Boyer
- Australian Centre for Nanomedicine
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia
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257
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Varadharajan D, Delaittre G. Accessing libraries of bifunctional block copolymers using two distinct pentafluorophenyl moieties. Polym Chem 2016. [DOI: 10.1039/c6py01711h] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The suitability of pentafluorophenyl (PFP) esters and PFP alkyl moieties for orthogonal dual functionalization of block copolymer segments is evaluated. While amidation followed by para-fluoro–thiol substitution is a viable reaction sequence, thiol-based substitution can occur on PFP esters at a high rate, thereby hampering the viability of the reverse sequence.
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Affiliation(s)
- Divya Varadharajan
- Institute of Toxicology and Genetics
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
- Preparative Macromolecular Chemistry
| | - Guillaume Delaittre
- Institute of Toxicology and Genetics
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
- Preparative Macromolecular Chemistry
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258
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Alfurhood JA, Bachler PR, Sumerlin BS. Hyperbranched polymers via RAFT self-condensing vinyl polymerization. Polym Chem 2016. [DOI: 10.1039/c6py00571c] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
RAFT-mediated self-condensing vinyl polymerization is a promising synthetic tool to create well-defined hyperbranched polymers.
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Affiliation(s)
- Jawaher A. Alfurhood
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
| | - Patricia R. Bachler
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
| | - Brent S. Sumerlin
- George & Josephine Butler Polymer Research Laboratory
- Center for Macromolecular Science & Engineering
- Department of Chemistry
- University of Florida
- Gainesville
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259
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Mann SK, Dufour A, Glass JJ, De Rose R, Kent SJ, Such GK, Johnston APR. Tuning the properties of pH responsive nanoparticles to control cellular interactions in vitro and ex vivo. Polym Chem 2016. [DOI: 10.1039/c6py01332e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Engineering the properties of nanoparticles to limit non-specific cellular interactions is critical for developing effective drug delivery systems. Differences between interactions with cultured cells and human blood highlights the need for appropriate assays.
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Affiliation(s)
- S. K. Mann
- Drug Delivery
- Disposition and Dynamics
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Parkville
| | - A. Dufour
- Drug Delivery
- Disposition and Dynamics
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Parkville
| | - J. J. Glass
- Department of Microbiology and Immunology
- The Peter Doherty Institute for Infection and Immunity
- The University of Melbourne
- Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
| | - R. De Rose
- Department of Microbiology and Immunology
- The Peter Doherty Institute for Infection and Immunity
- The University of Melbourne
- Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
| | - S. J. Kent
- Department of Microbiology and Immunology
- The Peter Doherty Institute for Infection and Immunity
- The University of Melbourne
- Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
| | - G. K. Such
- Department of Chemistry
- The University of Melbourne
- Parkville
- Australia
| | - A. P. R. Johnston
- Drug Delivery
- Disposition and Dynamics
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Parkville
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260
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Wang W, Bai L, Chen H, Xu H, Niu Y, Tao Q, Cheng Z. PMDETA as an efficient catalyst for bulk reversible complexation mediated polymerization (RCMP) in the absence of additional metal salts and deoxygenation. RSC Adv 2016. [DOI: 10.1039/c6ra20164d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PMDETA was used as a commercial and efficient catalyst for reversible complexation mediated polymerization (RCMP) without deoxygenation in bulk, which could potentially allow the more facile preparation, post-treatment and storage.
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Affiliation(s)
- Wenxiang Wang
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Liangjiu Bai
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Hou Chen
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Hui Xu
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Yuzhong Niu
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Qian Tao
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Zhenping Cheng
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
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261
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Reader PW, Pfukwa R, Jokonya S, Arnott GE, Klumperman B. Synthesis of α,ω-heterotelechelic PVP for bioconjugation, via a one-pot orthogonal end-group modification procedure. Polym Chem 2016. [DOI: 10.1039/c6py01296e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A simple one pot orthogonal procedure for synthesizing α-aldehyde, ω-thiol heterotelechelic poly(N-vinylpyrrolidone) (PVP) is introduced.
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Affiliation(s)
- Paul. W. Reader
- 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
| | - Simbarashe Jokonya
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland 7602
- South Africa
| | - Gareth E. Arnott
- 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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262
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John JV, Chung CW, Johnson RP, Jeong YI, Chung KD, Kang DH, Suh H, Chen H, Kim I. Dual Stimuli-Responsive Vesicular Nanospheres Fabricated by Lipopolymer Hybrids for Tumor-Targeted Photodynamic Therapy. Biomacromolecules 2015; 17:20-31. [PMID: 26636723 DOI: 10.1021/acs.biomac.5b01474] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Smart delivery system of photosensitizer chlorin e6 (Ce6) has been developed for targeted photodynamic therapy (PDT). Simple self-assemblies of the mixtures comprising soybean lecithin derived phosphatidylcholine (PC), phosphatidylethanolamine-poly(L-histidine)40 (PE-p(His)40), and folic acid (FA) conjugated phosphatidylethanolamine-poly(N-isopropylacrylamide)40 (PE-p(NIPAM)40-FA) in different ratios yield smart nanospheres characterized by (i) stable and uniform particle size (∼100 nm), (ii) positive surface charge, (iii) high hydrophobic drug (Ce6) loading efficiency up to 45%, (iv) covalently linked targeting moiety, (v) low cytotoxicity, and (vi) smartness showing p(His) block oriented pH and p(NIPAM) oriented temperature responsiveness. The Ce6-encapsulated vesicular nanospheres (Ce6@VNS) were used to confirm the efficiency of cellular uptake, intracellular distribution, and phototoxicity against KB tumor cells compared to free Ce6 at different temperature and pH conditions. The Ce6@VNS system showed significant photodynamic therapeutic efficiency on KB cells than free Ce6. A receptor-mediated inhibition study proved the site-specific delivery of Ce6 in targeted tumor cells.
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Affiliation(s)
- Johnson V John
- BK21 PLUS Center for Advanced Chemical Technology, Department Polymer Science and Engineering, Pusan National University , Busan 609-735, Republic of Korea
| | - Chung-Wook Chung
- Department of Gastroenterology, Pusan National University Hospital , Busan 602-739, Republic of Korea
| | - Renjith P Johnson
- BK21 PLUS Center for Advanced Chemical Technology, Department Polymer Science and Engineering, Pusan National University , Busan 609-735, Republic of Korea
| | - Young-Il Jeong
- Biomedical Research Institute, Pusan National University Hospital , Busan 602-739, Republic of Korea
| | - Kyu-Don Chung
- Department of Anesthesiology and Pain Medicine, College of Medicine, The Catholic University , Seoul 137-701, Republic of Korea
| | - Dae Hwan Kang
- Department of Gastroenterology, Pusan National University Hospital , Busan 602-739, Republic of Korea
| | - Hongsuk Suh
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University , Busan 609-735, Republic of Korea
| | - Hongyu Chen
- Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link 637371 Singapore
| | - Il Kim
- BK21 PLUS Center for Advanced Chemical Technology, Department Polymer Science and Engineering, Pusan National University , Busan 609-735, Republic of Korea
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263
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Thomas HR, Phillips DJ, Wilson NR, Gibson MI, Rourke JP. One-step grafting of polymers to graphene oxide. Polym Chem 2015; 6:8270-8274. [PMID: 28003854 PMCID: PMC5166972 DOI: 10.1039/c5py01358e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct grafting of poly(N-isopropylacrylamide) to the basal plane of graphene oxide has been achieved in a single step: cleavage of the terminal thiocarbonylthio group on RAFT grown poly(N-isopropylacrylamide) reveals a reactive thiol that attacks the epoxides present across the surface of graphene oxide. The new composite material was characterised by a combination of SSNMR, FTIR, Raman, EDX, XPS, TGA and contact angle measurement; it shows enhanced thermal stability and solubility in water.
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Affiliation(s)
- Helen R. Thomas
- Department of Chemistry, University of Warwick, Coventry CV4 7AL,
UK
| | | | - Neil R. Wilson
- Department of Physics, University of Warwick, Coventry CV4 7AL,
UK
| | - Matthew I. Gibson
- Department of Chemistry, University of Warwick, Coventry CV4 7AL,
UK
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264
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Vasani RB, Janardanan N, Prieto-Simón B, Cifuentes-Rius A, Bradley SJ, Moore E, Kraus T, Voelcker NH. Microwave Heating of Poly(N-isopropylacrylamide)-Conjugated Gold Nanoparticles for Temperature-Controlled Display of Concanavalin A. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27755-27764. [PMID: 26629977 DOI: 10.1021/acsami.5b08765] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrate microwave-induced heating of gold nanoparticles and nanorods. An appreciably higher and concentration-dependent microwave-induced heating rate was observed with aqueous dispersions of the nanomaterials as opposed to pure water and other controls. Grafted with the thermoresponsive polymer poly(N-isopropylacrylamide), these gold nanomaterials react to microwave-induced heating with a conformational change in the polymer shell, leading to particle aggregation. We subsequently covalently immobilize concanavalin A (Con A) on the thermoresponsive gold nanoparticles. Con A is a bioreceptor commonly used in bacterial sensors because of its affinity for carbohydrates on bacterial cell surfaces. The microwave-induced thermal transitions of the polymer reversibly switch on and off the display of Con A on the particle surface and hence the interactions of the nanomaterials with carbohydrate-functionalized surfaces. This effect was determined using linear sweep voltammetry on a methyl-α-d-mannopyranoside-functionalized electrode.
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Affiliation(s)
- Roshan B Vasani
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Nayana Janardanan
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Beatriz Prieto-Simón
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Anna Cifuentes-Rius
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Siobhan J Bradley
- Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Eli Moore
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Tobias Kraus
- INM-Leibniz Institute for New Materials , Campus D2 2, Saarbruecken, Saarland 66123, Germany
| | - Nicolas H Voelcker
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
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265
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Qiao Y, Yin X, Wang L, Islam MS, Benicewicz BC, Ploehn HJ, Tang C. Bimodal Polymer Brush Core–Shell Barium Titanate Nanoparticles: A Strategy for High-Permittivity Polymer Nanocomposites. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02018] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Yali Qiao
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Xiaodong Yin
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Lei Wang
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Md. Sayful Islam
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Brian C. Benicewicz
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Harry J. Ploehn
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
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266
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Colombo C, Gatti S, Ferrari R, Casalini T, Cuccato D, Morosi L, Zucchetti M, Moscatelli D. Self-assembling amphiphilic PEGylated block copolymers obtained through RAFT polymerization for drug-delivery applications. J Appl Polym Sci 2015. [DOI: 10.1002/app.43084] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Claudio Colombo
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences; ETH Zürich, Vladimir-Prelog-Weg 1; 8093 Zürich Switzerland
| | - Simone Gatti
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico Di Milano; 20131 Milano
| | - Raffaele Ferrari
- IRCCS - Istituto di Ricerche Farmacologiche Mario Negri; Via La Masa 19 20156 Milano Italy
| | - Tommaso Casalini
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences; ETH Zürich, Vladimir-Prelog-Weg 1; 8093 Zürich Switzerland
| | - Danilo Cuccato
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences; ETH Zürich, Vladimir-Prelog-Weg 1; 8093 Zürich Switzerland
| | - Lavinia Morosi
- IRCCS - Istituto di Ricerche Farmacologiche Mario Negri; Via La Masa 19 20156 Milano Italy
| | - Massimo Zucchetti
- IRCCS - Istituto di Ricerche Farmacologiche Mario Negri; Via La Masa 19 20156 Milano Italy
| | - Davide Moscatelli
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico Di Milano; 20131 Milano
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267
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Yu SH, Hu J, Ercole F, Truong NP, Davis TP, Whittaker MR, Quinn JF. Transformation of RAFT Polymer End Groups into Nitric Oxide Donor Moieties: En Route to Biochemically Active Nanostructures. ACS Macro Lett 2015; 4:1278-1282. [PMID: 35614828 DOI: 10.1021/acsmacrolett.5b00733] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Polymers with a terminal S-nitrosothiol moiety were synthesized by modifying the thiocarbonylthio end group formed by reversible addition-fragmentation chain transfer polymerization. Specifically, benzodithioate-terminated poly[oligo(ethylene glycol) methyl ether methacrylate] (POEGMA) was first synthesized by polymerizing OEGMA in the presence of 4-cyano-4-(phenylcarbonothioylthio)pentanoic acid. Sequential treatment with hydrazine hydrate and a stoichiometric amount of nitrous acid resulted in the formation of S-nitrosothiol-terminated polymers. A similar approach was applied to block copolymers of POEGMA incorporating a domain of poly[(N,N-diisopropylamino)ethyl methacrylate], thus, enabling the preparation of pH responsive nitric oxide (NO)-releasing micelles. The micelles possessed substantially modified S-nitrosothiol loss kinetics compared to the hydrophilic homopolymer analogue. Moreover, thiol-triggered degradation of the S-nitrosothiol was significantly slower when the S-nitrosothiol was embedded in a micellar structure. These results demonstrate that it is possible to incorporate nitric oxide donor moieties directly onto a polymer chain end, enabling simple synthesis of biochemically active nanostructures.
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Affiliation(s)
- Sul Hwa Yu
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Jinming Hu
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Francesca Ercole
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Nghia P. Truong
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Thomas P. Davis
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
- Department
of Chemistry, University of Warwick, Coventry, ULCV4 7AL, United Kingdom
| | - Michael R. Whittaker
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - John F. Quinn
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
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268
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Perumal S, Park KT, Lee HM, Cheong IW. PVP-b-PEO block copolymers for stable aqueous and ethanolic graphene dispersions. J Colloid Interface Sci 2015; 464:25-35. [PMID: 26606378 DOI: 10.1016/j.jcis.2015.11.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 11/03/2015] [Accepted: 11/08/2015] [Indexed: 11/30/2022]
Abstract
The ability to disperse pristine (unfunctionalized) graphene is important for various applications, coating, nanocomposites, and energy related systems. Herein we report that amphiphilic copolymers of poly(4-vinyl pyridine)-block-poly(ethylene oxide) (PVP-b-PEO) are able to disperse graphene with high concentrations about 2.6mg/mL via sonication and centrifugation. Ethanolic and aqueous highly-ordered pyrolytic graphite (HOPG) dispersions with block copolymers were prepared and they were compared with the dispersions stabilized by P-123 Pluronic® (P123) and poly(styrene)-block-poly(ethylene oxide) (PS-b-PEO) synthesized. Transmission electron microscopy, scanning electron microscopy, atomic force microscopy, X-ray diffraction, Raman and UV-visible spectroscopic studies confirmed that PVP-b-PEO block copolymers are better stabilizers for HOPG graphene than P123 and PS-b-PEO. X-ray photoelectron spectroscopy and force-distance (F-d) curve analyses revealed that the nitrogen of vinyl pyridine plays a vital role in better attractive interaction with surface of graphene sheet. Thermogravimetric analysis showed that larger amount of PVP-b-PEO was adsorbed onto graphene with longer poly(4-vinyl pyridine) (PVP) block length and in aqueous medium, respectively, and which was consistent with electrical conductivity decreases. This study presents the dispersion efficiency of graphene using PVP-b-PEO varies substantially depending on the lengths of their hydrophobic (PVP) domains.
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Affiliation(s)
- Suguna Perumal
- Department of Applied Chemistry, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu 702-701, South Korea
| | - Kyung Tae Park
- Department of Applied Chemistry, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu 702-701, South Korea
| | - Hyang Moo Lee
- Department of Applied Chemistry, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu 702-701, South Korea
| | - In Woo Cheong
- Department of Applied Chemistry, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu 702-701, South Korea.
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269
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Grandl M, Pammer F. Preparation of Head-to-Tail Regioregular 6-(1-Alkenyl)-Functionalized Poly(pyridine-2,5-diyl) and its Post-Functionalization via Hydroboration. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500337] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Markus Grandl
- Institute of Organic Chemistry II and Advanced Materials; University of Ulm; 89081 Ulm Germany
| | - Frank Pammer
- Institute of Organic Chemistry II and Advanced Materials; University of Ulm; 89081 Ulm Germany
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270
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Abdollahi E, Abdouss M, Salami-Kalajahi M, Mohammadi A, Khalafi-Nezhad A. Synthesis and characterization of diethyl-dithiocarbamic acid 2-[4-(2-diethylthiocarbamoylsulfanyl-2-phenyl-acetyl)-2,5-dioxo-piperazin-1-yl]-2-oxo-1-phenyl-ethyl ester as new reversible addition-fragmentation chain transfer agent for polymerization of ethyl methacrylate. Des Monomers Polym 2015. [DOI: 10.1080/15685551.2015.1092013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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271
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Khor SY, Hu J, McLeod VM, Quinn JF, Williamson M, Porter CJ, Whittaker MR, Kaminskas LM, Davis TP. Molecular weight (hydrodynamic volume) dictates the systemic pharmacokinetics and tumour disposition of PolyPEG star polymers. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 11:2099-108. [DOI: 10.1016/j.nano.2015.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 07/28/2015] [Accepted: 08/17/2015] [Indexed: 10/23/2022]
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272
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Loczenski Rose V, Shubber S, Sajeesh S, Spain SG, Puri S, Allen S, Lee DK, Winkler GS, Mantovani G. Phosphonium Polymethacrylates for Short Interfering RNA Delivery: Effect of Polymer and RNA Structural Parameters on Polyplex Assembly and Gene Knockdown. Biomacromolecules 2015; 16:3480-90. [DOI: 10.1021/acs.biomac.5b00898] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Vanessa Loczenski Rose
- School
of Pharmacy, University of Nottingham, Boots Science Building, University
Park, Nottingham NG7 2RD, U.K
| | - Saif Shubber
- School
of Pharmacy, University of Nottingham, Boots Science Building, University
Park, Nottingham NG7 2RD, U.K
| | - S. Sajeesh
- Global
Research Laboratory for RNAi Medicine, Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Sebastian G. Spain
- Department
of Chemistry, University of Sheffield, Dainton Building, Sheffield S3 7HF, U.K
| | - Sanyogitta Puri
- Pharmaceutical
Development, Astrazeneca UK Ltd., Alderley Park, Macclesfield SK10 2NA, U.K
| | - Stephanie Allen
- School
of Pharmacy, University of Nottingham, Boots Science Building, University
Park, Nottingham NG7 2RD, U.K
| | - Dong-Ki Lee
- Global
Research Laboratory for RNAi Medicine, Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - G. Sebastiaan Winkler
- School
of Pharmacy, University of Nottingham, Boots Science Building, University
Park, Nottingham NG7 2RD, U.K
| | - Giuseppe Mantovani
- School
of Pharmacy, University of Nottingham, Boots Science Building, University
Park, Nottingham NG7 2RD, U.K
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273
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Piunova VA, Horn HW, Jones GO, Rice JE, Miller RD. Synthesis of diblock copolymers by combination of organocatalyzed ring-opening polymerization and atom transfer radical polymerization using trichloroethanol as a bifunctional initiator. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27807] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Hans W. Horn
- IBM Almaden Research Center; 650 Harry Road San Jose California 95120
| | - Gavin O. Jones
- IBM Almaden Research Center; 650 Harry Road San Jose California 95120
| | - Julia E. Rice
- IBM Almaden Research Center; 650 Harry Road San Jose California 95120
| | - Robert D. Miller
- IBM Almaden Research Center; 650 Harry Road San Jose California 95120
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274
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Baratha KV, Nourry A, Pilard JF. Synthesis of NR based Polyurethanes containing phosphorylated polymers as chain extenders. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.07.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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275
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Fairbanks BD, Gunatillake PA, Meagher L. Biomedical applications of polymers derived by reversible addition - fragmentation chain-transfer (RAFT). Adv Drug Deliv Rev 2015; 91:141-52. [PMID: 26050529 DOI: 10.1016/j.addr.2015.05.016] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 05/25/2015] [Accepted: 05/27/2015] [Indexed: 11/19/2022]
Abstract
RAFT- mediated polymerization, providing control over polymer length and architecture as well as facilitating post polymerization modification of end groups, has been applied to virtually every facet of biomedical materials research. RAFT polymers have seen particularly extensive use in drug delivery research. Facile generation of functional and telechelic polymers permits straightforward conjugation to many therapeutic compounds while synthesis of amphiphilic block copolymers via RAFT allows for the generation of self-assembled structures capable of carrying therapeutic payloads. With the large and growing body of literature employing RAFT polymers as drug delivery aids and vehicles, concern over the potential toxicity of RAFT derived polymers has been raised. While literature exploring this complication is relatively limited, the emerging consensus may be summed up in three parts: toxicity of polymers generated with dithiobenzoate RAFT agents is observed at high concentrations but not with polymers generated with trithiocarbonate RAFT agents; even for polymers generated with dithiobenzoate RAFT agents, most reported applications call for concentrations well below the toxicity threshold; and RAFT end-groups may be easily removed via any of a variety of techniques that leave the polymer with no intrinsic toxicity attributable to the mechanism of polymerization. The low toxicity of RAFT-derived polymers and the ability to remove end groups via straightforward and scalable processes make RAFT technology a valuable tool for practically any application in which a polymer of defined molecular weight and architecture is desired.
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Affiliation(s)
- Benjamin D Fairbanks
- CSIRO Manufacturing Flagship, Ian Wark Laboratories, Clayton, VIC 3168, Australia; Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA 80309-0596.
| | | | - Laurence Meagher
- CSIRO Manufacturing Flagship, Ian Wark Laboratories, Clayton, VIC 3168, Australia; Monash Institute for Medical Engineering and Department of Materials Science and Engineering, Monash University, PO Box 69M, VIC, 3800, Australia.
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276
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Warren NJ, Rosselgong J, Madsen J, Armes SP. Disulfide-Functionalized Diblock Copolymer Worm Gels. Biomacromolecules 2015; 16:2514-21. [DOI: 10.1021/acs.biomac.5b00767] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicholas J. Warren
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, United Kingdom
| | - Julien Rosselgong
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, United Kingdom
| | - Jeppe Madsen
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, United Kingdom
| | - Steven P. Armes
- Department
of Chemistry, University of Sheffield, Brook Hill, Sheffield, S3 7HF, United Kingdom
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277
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Wright TG, Weber W, Pfukwa H, Pasch H. Synthesis and Characterization of Four-Arm Star Polystyrene Based on a Novel Tetrafunctional RAFT Agent. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500164] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Trevor Gavin Wright
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 7602 Matieland South Africa
| | - Wolfgang Weber
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 7602 Matieland South Africa
| | - Helen Pfukwa
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 7602 Matieland South Africa
| | - Harald Pasch
- Department of Chemistry and Polymer Science; University of Stellenbosch; Private Bag X1 7602 Matieland South Africa
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278
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Wong ASM, Mann SK, Czuba E, Sahut A, Liu H, Suekama TC, Bickerton T, Johnston APR, Such GK. Self-assembling dual component nanoparticles with endosomal escape capability. SOFT MATTER 2015; 11:2993-3002. [PMID: 25731820 DOI: 10.1039/c5sm00082c] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study reports a novel nanoparticle system with simple and modular one-step assembly, which can respond intelligently to biologically relevant variations in pH. Importantly, these particles also show the ability to induce escape from the endosomal/lysosomal compartments of the cell, which is integral to the design of efficient polymeric delivery systems. The nanoparticles were formed by the nanoprecipitation of pH-responsive poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) and poly(2-(diethylamino)ethyl methacrylate)-b-poly(ethylene glycol) (PDEAEMA-b-PEG). Rhodamine B octadecyl ester perchlorate was successfully encapsulated within the hydrophobic core of the nanoparticle upon nanoprecipitation into PBS at pH 8. These particles disassembled when the pH was reduced below 6.8 at 37 °C. Cellular experiments showed the successful uptake of the nanoparticles into the endosomal/lysosomal compartments of 3T3 fibroblast cells. The ability to induce escape from the endosomes was demonstrated by the use of calcein, a membrane-impermeable fluorophore. The modular nature of these particles combined with promising endosomal escape capabilities make these dual component PDEAEMA nanoparticles useful for drug and gene delivery applications.
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Affiliation(s)
- Adelene S M Wong
- Department of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia.
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279
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Zhu S, Li ZW, Zhao H. Patchy micelles based on coassembly of block copolymer chains and block copolymer brushes on silica particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:4129-4136. [PMID: 25811763 DOI: 10.1021/acs.langmuir.5b00526] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Patchy particles are a type of colloidal particles with one or more well-defined patches on the surfaces. The patchy particles with multiple compositions and functionalities have found wide applications from the fundamental studies to practical uses. In this research patchy micelles with thiol groups in the patches were prepared based on coassembly of free block copolymer chains and block copolymer brushes on silica particles. Thiol-terminated and cyanoisopropyl-capped polystyrene-block-poly(N-isopropylacrylamide) block copolymers (PS-b-PNIPAM-SH and PS-b-PNIPAM-CIP) were synthesized by reversible addition-fragmentation chain transfer polymerization and chemical modifications. Pyridyl disulfide-functionalized silica particles (SiO2-SS-Py) were prepared by four-step surface chemical reactions. PS-b-PNIPAM brushes on silica particles were prepared by thiol-disulfide exchange reaction between PS-b-PNIPAM-SH and SiO2-SS-Py. Surface micelles on silica particles were prepared by coassembly of PS-b-PNIPAM-CIP and block copolymer brushes. Upon cleavage of the surface micelles from silica particles, patchy micelles with thiol groups in the patches were obtained. Dynamic light scattering, transmission electron microscopy, and zeta-potential measurements demonstrate the preparation of patchy micelles. Gold nanoparticles can be anchored onto the patchy micelles through S-Au bonds, and asymmetric hybrid structures are formed. The thiol groups can be oxidized to disulfides, which results in directional assembly of the patchy micelles. The self-assembly behavior of the patchy micelles was studied experimentally and by computer simulation.
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Affiliation(s)
- Shuzhe Zhu
- †Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
| | - Zhan-Wei Li
- ‡State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Hanying Zhao
- †Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
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280
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Zhang Q, Voorhaar L, De Geest BG, Hoogenboom R. One-Pot Preparation of Inert Well-Defined Polymers by RAFT Polymerization and In Situ End Group Transformation. Macromol Rapid Commun 2015; 36:1177-83. [DOI: 10.1002/marc.201500075] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/05/2015] [Indexed: 12/19/2022]
Affiliation(s)
- Qilu Zhang
- Supramolecular Chemistry Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281-S4 9000 Ghent Belgium
| | - Lenny Voorhaar
- Supramolecular Chemistry Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281-S4 9000 Ghent Belgium
| | - Bruno G. De Geest
- Department of Pharmaceutics; Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281-S4 9000 Ghent Belgium
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281
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RAFT preparation and the aqueous self-assembly of amphiphilic poly(octadecyl acrylate)- block -poly(polyethylene glycol methyl ether acrylate) copolymers. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.01.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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282
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Bukhryakov KV, Desyatkin VG, O’Shea JP, Almahdali SR, Solovyeva V, Rodionov VO. Cooperative catalysis with block copolymer micelles: a combinatorial approach. ACS COMBINATORIAL SCIENCE 2015; 17:76-80. [PMID: 25544983 DOI: 10.1021/co5001713] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A rapid approach to identifying complementary catalytic groups using combinations of functional polymers is presented. Amphiphilic polymers with "clickable" hydrophobic blocks were used to create a library of functional polymers, each bearing a single functionality. The polymers were combined in water, yielding mixed micelles. As the functional groups were colocalized in the hydrophobic microphase, they could act cooperatively, giving rise to new modes of catalysis. The multipolymer "clumps" were screened for catalytic activity, both in the presence and absence of metal ions. A number of catalyst candidates were identified across a wide range of model reaction types. One of the catalytic systems discovered was used to perform a number of preparative-scale syntheses. Our approach provides easy access to a range of enzyme-inspired cooperative catalysts.
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Affiliation(s)
- Konstantin V. Bukhryakov
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Victor G. Desyatkin
- Chemistry
Department, M.V. Lomonosov Moscow State University, Leninskye
Gory, 119992 Moscow, Russia
| | - John-Paul O’Shea
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Sarah R. Almahdali
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Vera Solovyeva
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Valentin O. Rodionov
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
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283
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Wang Y, Kotsuchibashi Y, Liu Y, Narain R. Study of bacterial adhesion on biomimetic temperature responsive glycopolymer surfaces. ACS APPLIED MATERIALS & INTERFACES 2015; 7:1652-1661. [PMID: 25548940 DOI: 10.1021/am508792k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen responsible for diseases such as bacteremia, chronic lung infection, and acute ulcerative keratitis. P. aeruginosa induced diseases can be fatal as the exotoxins and endotoxins released by the bacterium continue to damage host tissues even after the administration of antibiotics. As bacterial adhesion on cell surfaces is the first step in bacterial based pathogen infections, the control of bacteria-cell interactions is a worthwhile research target. In this work, thermally responsive poly(N-isopropylacrylamide) [P(NIPAAm)] based biomimetic surfaces were developed to study the two major bacterial infection mechanisms, which is believed to be mediated by hydrophobic or lectin-carbohydrate interactions, using quartz crystal microbalance with dissipation. Although, a greater number of P. aeruginosa adhered to the NIPAAm homopolymer modified surfaces at temperatures higher than the lower critical solution temperature (LCST), the bacterium-substratum bond stiffness was stronger between P. aeruginosa and a galactose based P(NIPAAm) surface. The high bacterial adhesion bond stiffness observed on the galactose based thermally responsive surface at 37 °C might suggest that both hydrophobic and lectin-carbohydrate interactions contribute to bacterial adhesion on cell surfaces. Our investigation also suggests that the lectin-carbohydrate interaction play a significant role in bacterial infections.
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Affiliation(s)
- Yinan Wang
- Department of Chemical and Materials Engineering, University of Alberta , 116 St and 85 Ave, Edmonton, Alberta T6G 2G6, Canada
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284
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Kotsuchibashi Y, Ebara M, Hoffman AS, Narain R, Aoyagi T. Temperature-responsive mixed core nanoparticle properties determined by the composition of statistical and block copolymers in the core. Polym Chem 2015. [DOI: 10.1039/c4py01794c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mixed core nanoparticles were prepared from self-assembled statistical and block copolymers by controlling the solution temperature. Interestingly, an equal mass of specific statistical copolymers was successfully loaded into block copolymer micelle cores.
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Affiliation(s)
- Y. Kotsuchibashi
- International Center for Young Scientists (ICYS) and International Center for Materials Nanoarchitectonics (WPI-MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - M. Ebara
- Biomaterials Unit
- WPI-MANA
- NIMS
- Tsukuba
- Japan
| | - A. S. Hoffman
- Department of Bioengineering
- University of Washington
- Seattle
- USA
| | - R. Narain
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - T. Aoyagi
- Biomaterials Unit
- WPI-MANA
- NIMS
- Tsukuba
- Japan
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285
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Poly J, Cabannes-Boué B, Hebinger L, Mangin R, Sauvage A, Xiao P, Morlet-Savary F, Lalevée J. Polymers synthesized by RAFT as versatile macrophotoinitiators. Polym Chem 2015. [DOI: 10.1039/c5py00608b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhancing the photodissociation efficiency of terminal functionalities in RAFT polymers makes them versatile macrophotoinitiators.
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Affiliation(s)
- Julien Poly
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR 7361 CNRS/UHA
- 68057 Mulhouse
- France
| | - Benjamin Cabannes-Boué
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR 7361 CNRS/UHA
- 68057 Mulhouse
- France
| | - Laura Hebinger
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR 7361 CNRS/UHA
- 68057 Mulhouse
- France
| | - Rémy Mangin
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR 7361 CNRS/UHA
- 68057 Mulhouse
- France
| | - Aurore Sauvage
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR 7361 CNRS/UHA
- 68057 Mulhouse
- France
| | - Pu Xiao
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR 7361 CNRS/UHA
- 68057 Mulhouse
- France
| | - Fabrice Morlet-Savary
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR 7361 CNRS/UHA
- 68057 Mulhouse
- France
| | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR 7361 CNRS/UHA
- 68057 Mulhouse
- France
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286
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Espeel P, Du Prez FE. One-pot multi-step reactions based on thiolactone chemistry: A powerful synthetic tool in polymer science. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2014.07.008] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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287
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Quek JY, Liu X, Davis TP, Roth PJ, Lowe AB. RAFT-prepared α-difunctional poly(2-vinyl-4,4-dimethylazlactone)s and their derivatives: synthesis and effect of end-groups on aqueous inverse temperature solubility. Polym Chem 2015. [DOI: 10.1039/c4py01108b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five R-group di-functional dithiobenzoates have been prepared and used in the reversible addition–fragmentation chain transfer polymerization of 2-vinyl-4,4-dimethylazlactone.
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Affiliation(s)
- Jing Yang Quek
- School of Chemical Engineering
- Centre for Advanced Macromolecular Design
- UNSW Australia
- University of New South Wales
- Sydney
| | - Xuechao Liu
- School of Chemical Engineering
- Centre for Advanced Macromolecular Design
- UNSW Australia
- University of New South Wales
- Sydney
| | - Thomas P. Davis
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Parkville
- Australia
- Department of Chemistry
| | - Peter J. Roth
- School of Chemical Engineering
- Centre for Advanced Macromolecular Design
- UNSW Australia
- University of New South Wales
- Sydney
| | - Andrew B. Lowe
- School of Chemical Engineering
- Centre for Advanced Macromolecular Design
- UNSW Australia
- University of New South Wales
- Sydney
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288
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Tooley CA, Pazicni S, Berda EB. Toward a tunable synthetic [FeFe] hydrogenase mimic: single-chain nanoparticles functionalized with a single diiron cluster. Polym Chem 2015. [DOI: 10.1039/c5py01196e] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report two novel “clickable” [(μ-S2C2H4NR)Fe2(CO)6] complexes and their incorporation into single-chain nanoparticles.
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Affiliation(s)
- C. A. Tooley
- University of New Hampshire
- Department of Chemistry
- Durham
- USA
| | - S. Pazicni
- University of New Hampshire
- Department of Chemistry
- Durham
- USA
| | - E. B. Berda
- University of New Hampshire
- Department of Chemistry
- Durham
- USA
- University of New Hampshire
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289
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Zhang J, Liu K, Müllen K, Yin M. Self-assemblies of amphiphilic homopolymers: synthesis, morphology studies and biomedical applications. Chem Commun (Camb) 2015; 51:11541-55. [DOI: 10.1039/c5cc03016a] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The need for a simplified access to supramolecular assemblies with enhanced tenability has led to the development of amphiphilic homopolymers (APHPs). This review highlights recent advances and future trends in APHP design, self-assembly, and biomedical applications.
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Affiliation(s)
- Jin Zhang
- State Key Laboratory of Chemical Resource Engineering
- Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- 100029 Beijing
| | - Kelan Liu
- State Key Laboratory of Chemical Resource Engineering
- Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- 100029 Beijing
| | - Klaus Müllen
- Max-Planck-Institute for Polymer Research
- 55128 Mainz
- Germany
| | - Meizhen Yin
- State Key Laboratory of Chemical Resource Engineering
- Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- 100029 Beijing
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290
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Yang F, Cao Z, Wang G. Micellar assembly of a photo- and temperature-responsive amphiphilic block copolymer for controlled release. Polym Chem 2015. [DOI: 10.1039/c5py01435b] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Block copolymeric micellar nanoparticles in response to light and temperature change have been constructed for the controlled release of encapsulated molecules under stimulation with light and temperature change.
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Affiliation(s)
- Fang Yang
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Ziquan Cao
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Guojie Wang
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
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291
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Wu L, Glebe U, Böker A. Surface-initiated controlled radical polymerizations from silica nanoparticles, gold nanocrystals, and bionanoparticles. Polym Chem 2015. [DOI: 10.1039/c5py00525f] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review summarizes recent progress in surface-initiated controlled radical polymerizations from silica nanoparticles, gold nanocrystals, and bionanoparticles.
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Affiliation(s)
- Lei Wu
- Fraunhofer Institute for Applied Polymer Research IAP
- 14476 Potsdam-Golm
- Germany
- DWI – Leibniz Institute for Interactive Materials e.V
- Lehrstuhl für Makromolekulare Materialien und Oberflächen
| | - Ulrich Glebe
- Fraunhofer Institute for Applied Polymer Research IAP
- 14476 Potsdam-Golm
- Germany
| | - Alexander Böker
- Fraunhofer Institute for Applied Polymer Research IAP
- 14476 Potsdam-Golm
- Germany
- Lehrstuhl für Polymermaterialien und Polymertechnologie
- Universität Potsdam
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292
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Basak D, Bej R, Ghosh S. Amphiphilic poly(disulfide) micelles and a remarkable impact of the core hydrophobicity on redox responsive disassembly. Polym Chem 2015. [DOI: 10.1039/c5py00969c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Redox-responsive amphiphilic triblock copolymers based on poly(triethylene glycol monomethyl ether)methacrylate-b-poly(disulfide)-b-poly(triethylene glycol monomethyl ether)methacrylate (PTEGMA-b-PDS-b-PTEGMA) with different hydrophobicities of the PDS block were synthesized by step-growth followed by chain-growth polymerization.
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Affiliation(s)
- Dipankar Basak
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Raju Bej
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Suhrit Ghosh
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata
- India
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293
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Bai L, Wang W, Chen H, Wang M, Cheng Z. Reversible chain transfer catalyzed polymerization (RTCP) in nitrogen-based solvents without additional catalysts. RSC Adv 2015. [DOI: 10.1039/c5ra00118h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
N,N-Dimethylformamide (DMF) andN-methyl-2-pyrrolidone (NMP) as typical nitrogen-based solvents were used as the catalyst for RTCP without additional catalyst, which could also be carried out in the presence of a limited amount of air.
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Affiliation(s)
- Liangjiu Bai
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Wenxiang Wang
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Hou Chen
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Minghua Wang
- School of Chemistry and Materials Science
- Ludong University
- Yantai 264025
- China
| | - Zhenping Cheng
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
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294
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Phillips DJ, Davies GL, Gibson MI. Siderophore-inspired nanoparticle-based biosensor for the selective detection of Fe3+. J Mater Chem B 2015; 3:270-275. [DOI: 10.1039/c4tb01501k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Au nanoparticles modified with catechol-functionalised polymers provide a strong optical response which is highly specific to Fe3+ ions at physiologically relevant concentrations.
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Affiliation(s)
| | | | - Matthew I. Gibson
- Department of Chemistry
- University of Warwick
- Coventry
- UK
- Warwick Medical School
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295
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Radzinski SC, Foster JC, Matson JB. Synthesis of bottlebrush polymers via transfer-to and grafting-through approaches using a RAFT chain transfer agent with a ROMP-active Z-group. Polym Chem 2015. [DOI: 10.1039/c4py01567c] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel dithiocarbamate chain transfer agent for reversible addition–fragmentation chain transfer polymerization with a directly polymerizable Z-group was synthesized and used to make bottlebrush polymers via multiple strategies.
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Affiliation(s)
- Scott C. Radzinski
- Department of Chemistry and Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
| | - Jeffrey C. Foster
- Department of Chemistry and Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
| | - John B. Matson
- Department of Chemistry and Macromolecules and Interfaces Institute
- Virginia Tech
- Blacksburg
- USA
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296
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KOHSAKA Y, KITAURA T, KITAYAMA T. Precise Synthesis of Stereoregular Polymethacrylates with End-Functionality. KOBUNSHI RONBUNSHU 2015. [DOI: 10.1295/koron.2015-0003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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297
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Hiruta Y, Nagumo Y, Miki A, Okano T, Kanazawa H. Effects of terminal group and chain length on temperature-responsive chromatography utilizing poly(N-isopropylacrylamide) synthesized via RAFT polymerization. RSC Adv 2015. [DOI: 10.1039/c5ra15906g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Even using the same homo poly(N-isopropylacrylamide) immobilized silica beads as stationary phases, terminal functional group and chain length significantly affected temperature-dependent elution behavior of steroids.
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Affiliation(s)
- Yuki Hiruta
- Faculty of Pharmacy
- Keio University
- Tokyo 105-8512
- Japan
| | - Yuhei Nagumo
- Faculty of Pharmacy
- Keio University
- Tokyo 105-8512
- Japan
| | - Atsushi Miki
- Faculty of Pharmacy
- Keio University
- Tokyo 105-8512
- Japan
| | - Teruo Okano
- Institute of Advanced Biomedical Engineering and Science
- Tokyo Women's Medical University
- TWIns
- Tokyo 162-8666
- Japan
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298
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Góis JR, Popov AV, Guliashvili T, Serra AC, Coelho JFJ. Synthesis of functionalized poly(vinyl acetate) mediated by alkyne-terminated RAFT agents. RSC Adv 2015. [DOI: 10.1039/c5ra15580k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two new xanthates with alkyne functionalities were synthesized for the reversible addition fragmentation chain transfer (RAFT) polymerization of vinyl acetate (VAc).
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Affiliation(s)
- Joana. R. Góis
- Department of Chemical Engineering
- University of Coimbra
- 3030-790 Coimbra
- Portugal
| | | | - Tamaz Guliashvili
- Department of Chemical Engineering
- University of Coimbra
- 3030-790 Coimbra
- Portugal
| | - Arménio C. Serra
- Department of Chemical Engineering
- University of Coimbra
- 3030-790 Coimbra
- Portugal
| | - Jorge F. J. Coelho
- Department of Chemical Engineering
- University of Coimbra
- 3030-790 Coimbra
- Portugal
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299
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John JV, Jeong YI, Johnson RP, Chung CW, Park H, Kang DH, Cho JK, Kim Y, Kim I. Folic acid-tethered poly(N-isopropylacrylamide)–phospholipid hybrid nanocarriers for targeted drug delivery. J Mater Chem B 2015; 3:8268-8278. [DOI: 10.1039/c5tb01063b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Folic acid-tethered poly(N-isopropylacrylamide)–phospholipid nanocarriers exhibit tumour targetability and temperature responsive Doxorubicin releasing behaviour under physiological conditions.
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Affiliation(s)
- Johnson V. John
- BK21 PLUS Center for Advanced Chemical Technology
- Department Polymer Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Young-Il Jeong
- Biomedical Research Institute
- Pusan National University Hospital
- Busan 602-739
- Republic of Korea
| | - Renjith P. Johnson
- BK21 PLUS Center for Advanced Chemical Technology
- Department Polymer Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Chung-Wook Chung
- Biomedical Research Institute
- Pusan National University Hospital
- Busan 602-739
- Republic of Korea
| | - Huiju Park
- BK21 PLUS Center for Advanced Chemical Technology
- Department Polymer Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Dae Hwan Kang
- Biomedical Research Institute
- Pusan National University Hospital
- Busan 602-739
- Republic of Korea
| | - Jin Ku Cho
- Green Process and Materials R&D Group
- Korea Institution of Industrial Technology
- Cheonan 331-822
- Republic of Korea
| | - Yongjin Kim
- Green Process and Materials R&D Group
- Korea Institution of Industrial Technology
- Cheonan 331-822
- Republic of Korea
| | - Il Kim
- BK21 PLUS Center for Advanced Chemical Technology
- Department Polymer Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
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300
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Phillips DJ, Prokes I, Davies GL, Gibson MI. Isothermally-Responsive Polymers Triggered by Selective Binding of Fe 3+ to Siderophoric Catechol End-Groups. ACS Macro Lett 2014; 3:1225-1229. [PMID: 35610830 DOI: 10.1021/mz500686w] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Thermoresponsive polymers have attracted huge interest as a way of developing smart/adaptable materials for biomedicine, particularly due to changes in their solubility above the LCST. However, temperature is not always an appropriate or desirable stimulus given the variety of other cellular microenvironments that exist, including pH, redox potentials, ionic strength, and metal ion concentration. Here, we achieve a highly specific, isothermal solubility switch for poly(N-isopropylacrylamide) by application of ferric iron (Fe3+), a species implicated in a range of neurodegenerative conditions. This is achieved by the site-specific incorporation of (Fe3+-binding) catechol units onto the polymer chain-end, inspired by the mechanism by which bacterial siderophores sequester iron from mammalian hosts. The ability to manipulate the hydrophilicity of responsive systems without the need for a temperature gradient offers an exciting approach toward preparing increasingly selective, targeted polymeric materials.
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Affiliation(s)
- Daniel J. Phillips
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, United Kingdom
| | - Ivan Prokes
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, United Kingdom
| | - Gemma-Louise Davies
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, United Kingdom
| | - Matthew I. Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill
Road, Coventry, CV4 7AL, United Kingdom
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