Article
Chemistry, Multidisciplinary
Emma E. Brotherton, Craig P. Jesson, Nicholas J. Warren, Mark J. Smallridge, Steven P. Armes
Summary: This study presents a novel method for the synthesis of a hydrophilic cis-diol-based methacrylic monomer, resulting in water-soluble aldehyde monomers and homopolymers. Furthermore, the synthetic utility of these products was demonstrated through reactions with three amino acids.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Jia-Wei Li, Miao Chen, Ze Zhang, Cai-Yuan Pan, Wen-Jian Zhang, Chun-Yan Hong
Summary: The composition and structure of polymers greatly impact their performance, and copolymerization of different monomers can result in polymers with diverse compositions. However, copolymerization of monomers with extremely different structures is quite challenging due to varied polymerization mechanisms.
Review
Polymer Science
Nicole Ziegenbalg, Lada Elbinger, Ulrich S. Schubert, Johannes C. Brendel
Summary: The large variety of available functional groups, their versatility, and the various polymerization techniques have made vinyl monomers the prevalent source for preparation of polymers. Interestingly, among this wide variety of applied structures S-vinyl monomers have remained a niche for the last decades despite their unique set of properties and early reports on their reactivities. Access to these compounds on a technical scale has been limited, but recent developments in sulfur chemistry and the need for more diverse reactivities might lead to a renewed interest in S-vinyl monomers. The different variations of sulfur moieties and their corresponding diversity of properties make these compounds increasingly attractive for fundamental research and applications. However, the detailed understanding and control of their polymerization behavior is still a challenge, as S-vinyl compounds may be susceptible to side reactions depending on the applied reactions. This review intends to provide a comprehensive overview of reported polymerization techniques, their challenges and limitations with regard to sulfur compounds, and the resulting reactivities of the corresponding monomers in homopolymerizations as well as copolymerizations with various other vinyl monomers.
Article
Polymer Science
Paulina Maksym, Magdalena Tarnacka, Roksana Bernat, Andrzej Dzienia, Anna Szelwicka, Barbara Hachula, Anna Chrobok, Marian Paluch, Kamil Kaminski
Summary: The innovative combination of light and high pressure enabled the effective polymerization of challenging ionic liquids with fluorinate anions and non-ionic vinyl acetate, producing well-defined polymers with different structural domains in a short time frame. The study also provided a unique opportunity to investigate the relationship between the molecular weights, glass transition temperature, and dc conductivity of the polymers, enriching the library of tailored PILs of enhanced conductivity.
Article
Chemistry, Multidisciplinary
Maki Amano, Mineto Uchiyama, Kotaro Satoh, Masami Kamigaito
Summary: This work describes the use of exo-olefin compounds as chain-transfer agents for sulfur-free reversible addition-fragmentation chain transfer (RAFT) radical polymerization. The authors synthesized a series of exo-olefin compounds and successfully polymerized methacrylates in homogeneous solution. More electron-donating substituents were found to produce polymers with narrower molecular weight distributions. Continuous monomer addition method further improved the control of molecular weight and enabled the synthesis of sulfur-free, colorless multiblock copolymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Hang Xiao, Quan-Xi Shi, Min Su, Xiao-Li Sun, Hongli Bao, Wen-Ming Wan
Summary: This study demonstrates a one-pot strategy for the molecular design of stimuli-responsive opposite emission/absorption polymer material with unique properties. The nontraditional intrinsic luminescence in the visible region is achieved through reversible addition-fragmentation chain transfer polymerization-induced emission (PIE) of a specific moiety. The opposite emission/absorption properties are derived from the carbocation-quinoid mechanism, enabling fluorescence encryption capability. This work provides a proof of concept for a novel polymer material that might inspire different fields.
Article
Polymer Science
Micheal K. Farh, Franka V. Gruschwitz, Nicole Ziegenbalg, Hassan Abul-Futouh, Helmar Goerls, Wolfgang Weigand, Johannes C. Brendel
Summary: This article introduces β-hydroxy dithiocinnamic esters as a new class of materials for reversible CTAs in the polymerization of acrylates, acrylamides, or styrene. Kinetic studies show that these materials provide reasonable control over the polymerization process, and the resulting polymer chains exhibit good structural integrity.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Polymer Science
T. P. Tuyen Dao, Lubomir Vezenkov, Gilles Subra, Vincent Ladmiral, Mona Semsarilar
Summary: This study aims to produce self-assembled structures with hydrophobic polypeptide cores using RAFT-mediated PISA. Different hydrophobic monomers were polymerized under varying conditions to form diblock copolymer nano objects, resulting in a range of morphologies influenced by the peptides self-assembling core.
Article
Polymer Science
James Turton, Stephen Worrall, Muhamad S. Musa, Amir H. Milani, Yichao Yao, Peter Shaw, David Ring, Brian R. Saunders
Summary: Research has shown that highly stretchable elastomers can be prepared by using nanostructured films formed by casting aqueous core-shell nanoparticle dispersions and drying. Increasing MAA content in the nanostructured films linearly increases toughness. Heating the films can enhance both modulus and toughness.
Article
Chemistry, Multidisciplinary
Takayuki Tanimoto, Mineto Uchiyama, Masami Kamigaito
Summary: A series of exo-olefin compounds were prepared by selective cationic dimerization of α-methylstyrene derivatives with p-toluenesulfonic acid, and they were used as reversible chain transfer agents for sulfur-free cationic RAFT polymerization. The effects of different R groups on the cationic RAFT polymerization were examined, and block copolymers of α-methylstyrene and methyl methacrylate were synthesized via mechanistic transformation from cationic to radical RAFT polymerization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Wenqi Wang, Brayan Rondon, Zeyu Wang, Junpeng Wang, Jia Niu
Summary: The study reports a general method for the organocatalyzed photocontrolled radical ring-opening cascade copolymerization of macrocyclic allylic sulfone and various types of vinyl monomers. This method provides a versatile approach to the wide range of degradable vinyl plastics with various structures and functions.
Article
Biochemistry & Molecular Biology
Alvaro Leonel Robles Grana, Hortensia Maldonado-Textle, Jose Roman Torres-Lubian, Claude St Thomas, Ramon Diaz de Leon, Jose Luis Olivares-Romero, Luis Valencia, Francisco Javier Enriquez-Medrano
Summary: This study demonstrates the efficient control of polymerization of methacrylic monomers using a symmetrical trithiocarbonate chain transfer agent in the RAFT process. However, an atypical behavior is observed in the polymerization of MMA, where high initiator/CTA molar ratios are required to achieve predictable molecular weights without affecting dispersity.
Article
Pharmacology & Pharmacy
Hassan Farmanbordar, Mohammad Sadegh Amini-Fazel, Reza Mohammadi
Summary: A pH-responsive core-shell nanocarrier system based on silica nanoparticles and methacrylic acid hydrogels was synthesized in this study, showing controlled drug release for cancer cells over 15 days. The drug-loaded nanocarriers exhibited notable cytotoxicity against human breast cancer cells and have potential for sustained pH-sensitive drug release systems.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Anna Grobelny, Karolina Lorenc, Lucja Skowron, Szczepan Zapotoczny
Summary: This study presents a new method for synthesizing ladder-like donor-acceptor polymer brushes, achieving proper arrangement of pendant donor and acceptor groups through alternating copolymerization. Dense brushes can be obtained in a single polymerization process without the use of toxic metal catalysts or bulky substituents.
Article
Chemistry, Physical
Qinzhi Quan, Yucheng Zhao, Kaixuan Chen, Huyan Zhou, Chengda Zhou, Mao Chen
Summary: By developing an organic photoredox catalyst, controlled photo-controlled radical copolymerization of multiple PFVEs and unconjugated comonomers is achieved. This method has high reaction efficiency and can produce a variety of complex fluoropolymers.
Article
Chemistry, Physical
S. L. Rizzelli, E. R. Jones, K. L. Thompson, S. P. Armes
COLLOID AND POLYMER SCIENCE
(2016)
Article
Chemistry, Multidisciplinary
Danielle J. Lloyd, Vasiliki Nikolaou, Jennifer Collins, Christopher Waldron, Athina Anastasaki, Simon P. Bassett, Steven M. Howdle, Adam Blanazs, Paul Wilson, Kristian Kempe, David M. Haddleton
CHEMICAL COMMUNICATIONS
(2016)
Article
Polymer Science
M. Williams, N. J. W. Penfold, S. P. Armes
Article
Polymer Science
N. J. W. Penfold, J. R. Lovett, N. J. Warren, P. Verstraete, J. Smets, S. P. Armes
Article
Polymer Science
Sarah J. Byard, Mark Williams, Beulah E. McKenzie, Adam Blanazs, Steven P. Armes
Article
Polymer Science
L. P. D. Ratcliffe, K. J. Bentley, R. Wehr, N. J. Warren, B. R. Saunders, S. P. Armes
Article
Polymer Science
S. L. Canning, V. J. Cunningham, L. P. D. Ratcliffe, S. P. Armes
Article
Chemistry, Physical
Amir H. Milani, Jennifer M. Saunders, Nam T. Nguyen, Liam P. D. Ratcliffe, Daman J. Adlam, Anthony J. Freemont, Judith A. Hoyland, Steven P. Armes, Brian R. Saunders
Article
Polymer Science
Nicholas J. Warren, Matthew J. Derry, Oleksandr O. Mykhaylyk, Joseph R. Lovett, Liam P. D. Ratcliffe, Vincent Ladmiral, Adam Blanazs, Lee A. Fielding, Steven P. Armes
Article
Chemistry, Multidisciplinary
Liam P. D. Ratcliffe, Matthew J. Derry, Alessandro Ianiro, Remco Tuinier, Steven P. Armes
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Polymer Science
Demetris E. E. Apostolides, Costas S. S. Patrickios, Miriam Simon, Michael Gradzielski, Adam Blanazs, Cecile Mussault, Alba Marcellan, Nicolas Alexander, Chrys Wesdemiotis
Summary: Self-healable, reversible, recyclable, stretchable, thermoresponsive and self-assembled model amphiphilic polymer co-networks (APCNs) were prepared. The dynamic covalent properties, self-healing, recyclability and reversibility, were investigated. The percentage of acylhydrazone cross-links was determined using H-1 NMR spectroscopy, and the incomplete reversibility was found to be due to the slowing down of the reformation reaction. Small-angle neutron scattering (SANS) revealed the self-assembly behavior of APCNs, with improved tensile mechanical properties at higher temperatures.
Article
Nanoscience & Nanotechnology
Moritz Streicher, Volodymyr Boyko, Adam Blanazs
Summary: In this study, ultra-high-molecular-weight polyelectrolyte copolymer flocculants with narrow molecular weight distributions were successfully synthesized using photoiniferter polymerization. The narrow-polydispersity copolymers showed improved flocculation efficiency in the clarification of kaolin suspensions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Sarah J. Byard, Cate T. O'Brien, Matthew J. Derry, Mark Williams, Oleksandr O. Mykhaylyk, Adam Blanazs, Steven P. Armes
Article
Chemistry, Physical
Amir H. Milani, Lee A. Fielding, Polly Greensmith, Brian R. Saunders, Daman J. Adlam, Anthony J. Freemont, Judith A. Hoyland, Nigel W. Hodson, Mohamed A. Elsawy, Aline F. Miller, Liam P. D. Ratcliffe, Oleksandr O. Mykhaylyk, Steven P. Armes
CHEMISTRY OF MATERIALS
(2017)
Meeting Abstract
Chemistry, Multidisciplinary
Liam Ratcliffe, Claudie Couchon, Steven Armes, Jos Paulusse
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Polymer Science
Paige A. Shaw, Maxime Klausen, Mark Bradley
Summary: A light-responsive polymer capable of controlled release of camptothecin and generation of reactive oxygen species (ROS) was developed, which exhibited high cancer cell killing activity through both camptothecin release and ROS generation.
Article
Polymer Science
Donghui Zhang, Shiqi Liu, Zhihao Cai, Weizhe Luo, Guojian Liu, Runhui Liu
Summary: A straightforward and efficient method for synthesizing NPC monomers has been developed in this study, which enhances the availability of NPC monomers and facilitates the synthesis of polypeptides.