Molecular Design of Liquid Crystalline Brush-Like Block Copolymers for Magnetic Field Directed Self-Assembly: A Platform for Functional Materials

被引：58

作者：

Deshmukh, Prashant ^{[1
]}

Gopinadhan, Manesh ^{[3
]}

Choo, Youngwoo ^{[3
]}

Ahn, Suk-kyun ^{[2
]}

Majewski, Pawel W. ^{[3
]}

Yoon, Sook Young ^{[1
]}

Bakajin, Olgica ^{[4
]}

Elimelech, Menachem ^{[3
]}

Osuji, Chinedum O. ^{[3
]}

Kasi, Rajeswari M. ^{[1
,2
]}

机构：

[1] Univ Connecticut, Dept Chem, Storrs, CT 06269 USA

[2] Univ Connecticut, Inst Mat Sci, Polymer Program, Storrs, CT 06269 USA

[3] Yale Univ, Dept Chem & Environm Engn, New Haven, CT 06511 USA

[4] Porifera Nano Inc, Hayward, CA 94545 USA

来源：

ACS MACRO LETTERS | 2014年 / 3卷 / 05期

基金：

美国国家科学基金会;

关键词：

THIN-FILMS; POLY(ETHYLENE OXIDE); NANOPOROUS MEMBRANES; ALIGNMENT; MICROSTRUCTURE; POLYSTYRENE; FILTRATION; TEMPLATES;

D O I：

10.1021/mz500161k

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report on the development of a liquid crystalline block copolymer with brush-type architecture as a platform for creating functional materials by magnetic-field-directed self-assembly. Ring-opening metathesis of n-alkyloxy cyanobiphenyl and polylactide (PLA) functionalized norbornene monomers provides efficient polymerization yielding low poly-dispersity block copolymers. The mesogenic species, spacer length, monomer functionality, brush-chain length, and overall molecular weight were chosen and optimized to produce hexagonally packed cylindrical PLA domains which self-assemble and align parallel to an applied magnetic field. The PLA domains can be selectively removed by hydrolytic degradation resulting in the production of nanoporous films. The polymers described here provide a versatile platform for scalable fabrication of aligned nanoporous materials and other functional materials based on such templates.

引用

页码：462 / 466

页数：5

共 33 条

[1] Development of thermal and photochemical strategies for thiol-ene click polymer functionalization [J].