Ultrahigh Molecular Weight Linear Block Copolymers: Rapid Access by Reversible-Deactivation Radical Polymerization and Self-Assembly into Large Domain Nanostructures

2016 ◽  
Vol 49 (10) ◽  
pp. 3733-3738 ◽  
Author(s):  
Jose Kenneth D. Mapas ◽  
Tim Thomay ◽  
Alexander N. Cartwright ◽  
Jan Ilavsky ◽  
Javid Rzayev
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Radical Polymerization ◽  
Self Assembly ◽  
Large Domain ◽  
Rapid Access ◽  
Ultrahigh Molecular Weight ◽  
Reversible Deactivation ◽  
Reversible Deactivation Radical Polymerization ◽  
Linear Block

Reversible-deactivation radical polymerization of chloroprene and the synthesis of novel polychloroprene-based block copolymers by the RAFT approach

RSC Advances ◽  
2014 ◽  
Vol 4 (98) ◽  
pp. 55529-55538 ◽  
Author(s):  
Jia Hui ◽  
Zhijiao Dong ◽  
Yan Shi ◽  
Zhifeng Fu ◽  
Wantai Yang
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Radical Polymerization ◽  
Molecular Weights ◽  
Molecular Weight Distributions ◽  
Weight Distributions ◽  
Reversible Deactivation ◽  
Raft Agent ◽  
Reversible Deactivation Radical Polymerization

Novel, well-defined PCP-based block copolymers (PSt-b-PCP and PMMA-b-PCP) with controlled number averaged molecular weights and molecular weight distributions can be prepared, employing EPDTB and CPDB, respectively, as the initial RAFT agent.

Photocontrolled iodine-mediated reversible-deactivation radical polymerization with a semifluorinated alternating copolymer as the macroinitiator

2020 ◽  
Vol 11 (47) ◽  
pp. 7497-7505
Author(s):  
Jiannan Cheng ◽  
Kai Tu ◽  
Enjie He ◽  
Jinying Wang ◽  
Lifen Zhang ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Radical Polymerization ◽  
Room Temperature ◽  
Blue Led ◽  
Led Light ◽  
Alternating Copolymers ◽  
Alternating Copolymer ◽  
Reversible Deactivation ◽  
Novel Strategy ◽  
Reversible Deactivation Radical Polymerization

A novel strategy for preparing block copolymers with semifluorinated alternating copolymers as macroinitiators was established by photocontrolled iodine-mediated RDRP under irradiation with blue LED light at room temperature.

scholarly journals Aqueous copper-mediated reversible deactivation radical polymerization (RDRP) utilizing polyetheramine derived initiators

2020 ◽  
Vol 11 (34) ◽  
pp. 5534-5541
Author(s):  
Jirui Zhang ◽  
Evelina Liarou ◽  
James Town ◽  
Yongguang Li ◽  
Alan M. Wemyss ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Radical Polymerization ◽  
Temperature Responsive ◽  
Reversible Deactivation ◽  
Reversible Deactivation Radical Polymerization

Polyetheramines (Jeffamines™) are used in Copper-mediated reversible deactivation radical polymeriation (Cu-RDRP) in water for the synthesis of temperature-responsive block copolymers.

Self-assembly of dendritic-linear block copolymers with fixed molecular weight and block ratio

2012 ◽  
Vol 48 (30) ◽  
pp. 3590 ◽  
Author(s):  
Moon Gon Jeong ◽  
Jan C. M. van Hest ◽  
Kyoung Taek Kim
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Self Assembly ◽  
Linear Block

Synthesis of lipase–polymer conjugates by Cu(0)-mediated reversible deactivation radical polymerization: polymerization vs. degradation

2020 ◽  
Vol 11 (7) ◽  
pp. 1386-1392
Author(s):  
Chunyang Bao ◽  
Jing Chen ◽  
Die Li ◽  
Aotian Zhang ◽  
Qiang Zhang
Keyword(s):  
Radical Polymerization ◽  
Self Assembly ◽  
Polymer Conjugates ◽  
Reversible Deactivation ◽  
Reversible Deactivation Radical Polymerization

Cu(0)-RDRP was first used for the polymerization-induced self-assembly of lipase–polymer conjugates, inducing the formation of nanospheres with preserved activity and degradability.

scholarly journals Aqueous copper(0) mediated reversible deactivation radical polymerization of 2-hydroxyethyl acrylate

2015 ◽  
Vol 6 (36) ◽  
pp. 6509-6518 ◽  
Author(s):  
Mingmin Zhang ◽  
Michael F. Cunningham ◽  
Robin A. Hutchinson
Keyword(s):  
Aqueous Solution ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Radical Polymerization ◽  
Reversible Deactivation ◽  
Reversible Deactivation Radical Polymerization

Lowering the concentration of adsorbed radicals on the Cu(0) surface, achieved by reducing catalyst and adding NaBr, is the key to the synthesis of well-defined P(HEA) without a high molecular weight shoulder in aqueous solution using two-step Cu(0)in situmediation.

scholarly journals One-Step Photocontrolled Polymerization-Induced Self-Assembly (Photo-PISA) by Using In Situ Bromine-Iodine Transformation Reversible-Deactivation Radical Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 150 ◽  
Author(s):  
Haihui Li ◽  
Qinghua Xu ◽  
Xiang Xu ◽  
Lifen Zhang ◽  
Zhenping Cheng ◽  
...  
Keyword(s):  
Radical Polymerization ◽  
Self Assembly ◽  
Solid Content ◽  
Transition Metal Catalysts ◽  
Water Soluble ◽  
Step Method ◽  
Reversible Deactivation ◽  
One Step ◽  
Reversible Deactivation Radical Polymerization

Polymerization-induced self-assembly (PISA) has become an effective strategy to synthesize high solid content polymeric nanoparticles with various morphologies in situ. In this work, one-step PISA was achieved by in situ photocontrolled bromine-iodine transformation reversible-deactivation radical polymerization (hereinafter referred to as Photo-BIT-RDRP). The water-soluble macroinitiator precursor α-bromophenylacetate polyethylene glycol monomethyl ether ester (mPEG1k-BPA) was synthesized in advance, and then the polymer nanomicelles (mPEG1k-b-PBnMA and mPEG1k-b-PHPMA, where BnMA means benzyl methacrylate and HPMA is hydroxypropyl methacrylate) were successfully formed from a PISA process of hydrophobic monomer of BnMA or HPMA under irradiation with blue LED light at room temperature. In addition, the typical living features of the photocontrolled PISA process were confirmed by the linear increase of molecular weights of the resultant amphiphilic block copolymers with monomer conversions and narrow molecular weight distributions (Mw/Mn < 1.20). Importantly, the photocontrolled PISA process is realized by only one-step method by using in situ photo-BIT-RDRP, which avoids the use of transition metal catalysts in the traditional ATRP system, and simplifies the synthesis steps of nanomicelles. This strategy provides a promising pathway to solve the problem of active chain end (C-I) functionality loss in two-step polymerization of BIT-RDRP.

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