Confined, Templated, and Break-Through Crystallization Modes in Poly(3-dodecylthiophene)-block-poly(ethyl methacrylate) Block Copolymers

2019 ◽  
Vol 52 (12) ◽  
pp. 4475-4482 ◽  
Author(s):  
Jin-Seong Kim ◽  
Young Jun Lee ◽  
Jonathan P. Coote ◽  
Gila E. Stein ◽  
Bumjoon J. Kim
Keyword(s):  
Block Copolymers ◽  
Ethyl Methacrylate

Ethanolic RAFT Dispersion Polymerization of 2-(Naphthalen-2-yloxy)ethyl Methacrylate and 2-Phenoxyethyl Methacrylate with Poly[2-(dimethylamino)ethyl Methacrylate] Macro-Chain Transfer Agents

2015 ◽  
Vol 68 (6) ◽  
pp. 939 ◽  
Author(s):  
Yiwen Pei ◽  
Nadia C. Dharsana ◽  
Andrew B. Lowe
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Dispersion Polymerization ◽  
Chain Transfer ◽  
Narrow Range ◽  
Degree Of Polymerization ◽  
Size Exclusion ◽  
Full Spectrum ◽  
Ethyl Methacrylate ◽  
Reversible Addition

The ethanolic reversible addition-fragmentation chain transfer dispersion polymerization (RAFTDP), at 21 wt-%, of 2-(naphthalen-2-yloxy)ethyl methacrylate (NOEMA) and 2-phenoxyethyl methacrylate (POEMA) with a poly[2-(dimethylamino)ethyl methacrylate] macro-chain transfer agent (CTA) with an average degree of polymerization of 20 (PDMAEMA20) is described. DMAEMA20-b-NOEMAy (y = 20–125) block copolymers were readily prepared under dispersion conditions in ethanol at 70°C. However, the polymerization of NOEMA was not well controlled, with size exclusion chromatograms being distinctly bi or multimodal with measured dispersities . Though NOEMA copolymerization was not ideal, the resulting series of block copolymers did exhibit the anticipated full spectrum of nanoparticle morphologies (spheres, worms, and vesicles). Interestingly, these morphology transitions occurred over a relatively narrow range of block copolymer compositions. In the case of POEMA, copolymerization was also poorly controlled with 1.50 ≤ ĐM ≤ 1.83 for the series of DMAEMA20-b-POEMAy copolymers. In contrast to the NOEMA-based copolymers, the POEMA series only yielded nanoparticles with a spherical morphology whose size increased with increasing average degrees of polymerization of the POEMA block. Collectively, though both NOEMA and POEMA can be utilized in ethanolic RAFT dispersion polymerization formulations, these preliminary studies suggest that neither appears to be an ideal aryl methacrylate choice as comonomer, especially if the goal is to combine the synthesis of well-defined copolymers with efficient nanoparticle formation.

Target grafting of poly(2‐(dimethylamino)ethyl methacrylate) to biodegradable block copolymers

2020 ◽  
Vol 58 (16) ◽  
pp. 2168-2180 ◽  
Author(s):  
Ivonne L. Diaz ◽  
Cesar A. Sierra ◽  
Valérie Jérôme ◽  
Ruth Freitag ◽  
León D. Perez
Keyword(s):  
Block Copolymers ◽  
Ethyl Methacrylate

Amphiphilic Poly(d- orl-lactide)-b-poly(N,N-dimethylamino-2-ethyl methacrylate) Block Copolymers: Controlled Synthesis, Characterization, and Stereocomplex Formation

2009 ◽  
Vol 10 (5) ◽  
pp. 1217-1223 ◽  
Author(s):  
Mariya Spasova ◽  
Laetitia Mespouille ◽  
Olivier Coulembier ◽  
Dilyana Paneva ◽  
Nevena Manolova ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Controlled Synthesis ◽  
Ethyl Methacrylate ◽  
Stereocomplex Formation

Block copolymers of Pluronics and poly-(2-dimethylamino+ethyl methacrylate) for delivery of oligonucleotides into tumor cells

2006 ◽  
Vol 16 (4) ◽  
pp. 245-251 ◽  
Author(s):  
Y.K. Valeeva ◽  
T.Y. Dorodnykh ◽  
N.A. Alexandrova ◽  
E.M. Zubin ◽  
A.V. Kachalova ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Tumor Cells ◽  
Ethyl Methacrylate
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