Synthesis of High Molecular Weight Polymethacrylates with Polyhedral Oligomeric Silsesquioxane Moieties by Atom Transfer Radical Polymerization

被引：31

作者：

Franczyk, Adrian ^{[1
]}

He, Hongkun ^{[2
]}

Burdynska, Joanna ^{[2
]}

Hui, Chin Ming ^{[2
]}

Matyjaszewski, Krzysztof ^{[2
]}

Marciniec, Bogdan ^{[1
,3
]}

机构：

[1] Adam Mickiewicz Univ, Dept Organometall Chem, Fac Chem, PL-61614 Poznan, Poland

[2] Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA

[3] Adam Mickiewicz Univ, Ctr Adv Technol, PL-60780 Poznan, Poland

来源：

ACS MACRO LETTERS | 2014年 / 3卷 / 08期

基金：

美国国家科学基金会;

关键词：

STAR-SHAPED POLYMER; BLOCK-COPOLYMERS; HYBRID POLYMERS; TRIBLOCK COPOLYMERS; POSS POLYMERS; SIDE-CHAIN; METHACRYLATE; ELECTROLYTES; HOMOPOLYMERS; CHEMISTRY;

D O I：

10.1021/mz5003799

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A new polyhedral oligomeric silsesquioxane (POSS) methacrylate monomer, 1-(3-(methacryloyloxy)-propyl)dimethylsiloxy-3,5,7,9,11,13,15-hepta(isobuty1)- pentacyclo- [9.5.1.1(3,9).1(5,15).1(7'13)] octasiloxane ( (i-Bu)(7)POSS-OSiMe2-MA, 1), with a flexible spacer between the cubic POSS cage and methacrylate group was synthesized to reduce steric strain and thus achieve polymethacrylates (poly(POSS-MA)s) with high molecular weight (MW). Atom transfer radical polymerization (ATRP) of 1 at high monomer concentration (1 M, corresponding to ca. 85 wt % of 1) led to polymers with the absolute number-average MW, determined by multiangle laser light scattering, M-n,M-MALLS = 2 350 000 (and apparent MW, measured by gel permeation chromatography with linear poly(methyl methacrylate) (PM.MA) standards, M-n,M-GPC = 550 000). Optimization of the reaction conditions, induding the ATRP catalyst, targeted degrees of polymerization, monomer concentrations, as well as a monomer feeding, resulting in the first well-defined high MW polymers with POSS moieties.

引用

收藏

页码：799 / 802

页数：4

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