Synthesis and Bulk Self-Assembly of ABC Star Terpolymers with a Polyferrocenylsilane Metalloblock

被引：38
|
作者：
Nunns, Adam [1 ]
Ross, Caroline A. [2 ]
Manners, Ian [1 ]
机构：
[1] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England
[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
来源：
MACROMOLECULES | 2013年 / 46卷 / 07期
基金：
美国国家科学基金会; 英国工程与自然科学研究理事会;
关键词：
ORGANOMETALLIC BLOCK-COPOLYMERS; WALLED CARBON NANOTUBES; THIN-FILMS; DIBLOCK COPOLYMER; DRUG-DELIVERY; ANIONIC-POLYMERIZATION; NANOPOROUS MEMBRANES; TILING PATTERNS; SQUARE ARRAYS; LITHOGRAPHY;
D O I：
10.1021/ma302602u
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The synthesis, characterization, and self-assembly of a range of ABC star polymers with arms of polyisoprene, poly(ferrocenylethylmethylsilane), and polystyrene is reported. A library of azide-functionalized polyisoprene and poly(ferrocenylethylmethylsilane) homopolymers were prepared by living anionic polymerization. Polystyrene was synthesized by living anionic polymerization and quenched with 3-triisopropylsilylethynyl-5-trimethylsilylethynylbenzaldehyde, yielding "core-functionalized" polystyrene with two different alkyne units. The azide-functionalized monomers were sequentially attached to core-functionalized polystyrene via copper(I)-catalyzed azide-alkyne cycloaddition reactions, giving polystyrene-polyisoprene-poly(ferrocenylethylmethylsilane) ABC star terpolymers with different compositions and narrow dispersities. Additionally, a chlorosilane route was employed as an alternative means of synthesis. Bulk films of each star terpolymer were prepared, and their self-assembly was analyzed by transmission electron microscopy. The formation of a diverse range of morphologies was observed, including lamellae with alternating cylinders and two different Archimedean tiling patterns.
引用
收藏
页码：2628 / 2635
页数：8
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