Sequence-Controlled Vinyl Polymers by Transition Metal-Catalyzed Step-Growth and Living Radical Polymerizations

2014 ◽  
Vol 1613 ◽  
pp. 17-21
Author(s):  
Kotaro Satoh ◽  
Masami Kamigaito
Keyword(s):  
Radical Polymerization ◽  
Building Blocks ◽  
Vinyl Monomers ◽  
Vinyl Polymers ◽  
Living Radical Polymerizations ◽  
Step Growth ◽  
Novel Strategy ◽  
Metal Catalyzed ◽  
Polymeric Structures ◽  
Step Polymerization

ABSTRACTThe metal-catalyzed step-growth radical polymerization was achieved to enable two systems for preparing tailored polymeric structures, i.e., sequence-regulated vinyl copolymer and periodically-functionalized polymer. The former is a novel strategy for preparing sequence-regulated vinyl copolymers by step-polymerization of sequence-regulated vinyl oligomers prepared from common vinyl monomers as building blocks. The later deals the simultaneous chain- and step-growth radical polymerization, which resulted in the polymers with periodic functional groups.

Lipoates as building blocks of sulfur-containing branched macromolecules

2015 ◽  
Vol 6 (39) ◽  
pp. 6936-6945 ◽  
Author(s):  
Houliang Tang ◽  
Nicolay V. Tsarevsky
Keyword(s):  
Radical Polymerization ◽  
Building Blocks ◽  
Degradable Polymers ◽  
Ene Reactions ◽  
Step Growth ◽  
Sulfur Containing ◽  
Polymerization Conditions

Under radical polymerization conditions, 2-acryloyloxyethyl lipoate (AOELp) yielded, prior to gelation, soluble, highly branched, reductively degradable disulfide-containing polymers. The reduction of AOELp afforded a dithiol acrylate, which participated in radical or ionic step-growth thiol-ene reactions, yielding highly branched reductively non-degradable polymers with thioether-type sulfur atoms in the backbones.

scholarly journals Transition Metal-Catalyzed Step-Growth Radical Polymerization

2011 ◽  
Vol 68 (7) ◽  
pp. 436-456
Author(s):  
Kotaro SATOH ◽  
Masato MIZUTANI ◽  
Masami KAMIGAITO
Keyword(s):  
Transition Metal ◽  
Radical Polymerization ◽  
Step Growth ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Construction of Sequence-Regulated Vinyl Copolymers via Iterative Single Vinyl Monomer Additions and Subsequent Metal-Catalyzed Step-Growth Radical Polymerization

2019 ◽  
Vol 52 (9) ◽  
pp. 3327-3341 ◽  
Author(s):  
Kotaro Satoh ◽  
Kenta Ishizuka ◽  
Tsuyoshi Hamada ◽  
Masato Handa ◽  
Tomohiro Abe ◽  
...  
Keyword(s):  
Radical Polymerization ◽  
Vinyl Monomer ◽  
Step Growth ◽  
Metal Catalyzed

Construction of Vinyl Polymer and Polyester or Polyamide Units in a Single Polymer Chain via Metal-catalyzed Simultaneous Chain- and Step-growth Radical Polymerization of Various Monomers

2014 ◽  
Vol 67 (4) ◽  
pp. 544 ◽  
Author(s):  
Masato Mizutani ◽  
Kotaro Satoh ◽  
Masami Kamigaito
Keyword(s):  
Radical Polymerization ◽  
Random Copolymers ◽  
Feed Ratio ◽  
Chain Growth ◽  
Alkyl Acrylates ◽  
Monomer Feed ◽  
Vinyl Polymer ◽  
Step Growth ◽  
Single Polymer Chain ◽  
Metal Catalyzed

Metal-catalyzed simultaneous chain- and step-growth radical polymerization was examined to combine common conjugated vinyl monomers, such as various acrylates and styrene, as chain-growth monomers and various ester- or amide-linked monomers bearing both an unconjugated C=C bond and an active C–Cl bond as step-growth monomers. The CuCl/1,1,4,7,10,10-hexamethyltriethylenetetramine-catalyzed copolymerization of alkyl acrylates and various step-growth monomers at a 1 : 1-monomer feed ratio resulted in almost linear random copolymers that consisted of vinyl polymer and polyester units. Additional functional groups, such as oxyethylene and disulfide units, can be introduced into the main chain using a step-growth monomer that possesses the functional units between the unconjugated C=C bond and the active C–Cl bond. Copolymerization at a higher feed ratio of chain-growth monomers, such as alkyl acrylates and styrene, can provide multiblock vinyl polymers connected to the functionalized step-growth monomer units.

Axially Chiral Bis(α-amino Acid)s and Their Deamino Analogues. Synthesis and Configurational Assignment

1998 ◽  
Vol 63 (2) ◽  
pp. 211-221 ◽  
Author(s):  
Miloš Tichý ◽  
Luděk Ridvan ◽  
Miloš Buděšínský ◽  
Jiří Závada ◽  
Jaroslav Podlaha ◽  
...  
Keyword(s):  
Amino Acid ◽  
Nmr Spectra ◽  
Building Blocks ◽  
X Ray Diffraction ◽  
Amino Groups ◽  
X Ray ◽  
Configurational Assignment ◽  
Symmetry Properties ◽  
Axially Chiral ◽  
Polymeric Structures

The axially chiral bis(α-amino acid)s cis-2 and trans-2 as possible building blocks for polymeric structures of novel type of helicity were prepared. Their configuration has been determined by NMR spectroscopy and, in the case of the trans-isomer, confirmed by single-crystal X-ray diffraction. Analogous pair of stereoisomeric diacids cis-3 and trans-3, devoid of the amino groups, was also prepared and their configuration assigned. The observed differences in the NMR spectra of cis- and trans-isomers of 2 and 3 are discussed from the viewpoint of their different symmetry properties.

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.

Sign in / Sign up

Export Citation Format

Share Document