Synthesis and characterization of repeating sequence copolymers of fluorene and methylene monomers

被引：16

作者：

Copenhafer, James E. ^{[1
]}

Walters, Robert W. ^{[1
]}

Meyer, Tara Y. ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA

来源：

MACROMOLECULES | 2008年 / 41卷 / 01期

关键词：

D O I：

10.1021/ma0703711

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 series of well-defined multiblock (mb) copolymers consisting of alternating 9,9-dihexylfluorene and methylene segments has been prepared. Poly(9,9-dihexylfluorene-mb-methylene)s (PFMs) with repeat units of F M-x(y) (x = 1-4, y = 10, 18 and x = 5-8, y = 18) were assembled by tandem metal-catalyzed acyclic diene metathesis (ADMET) polymerization/hydrogenation from alpha,omega-olefin bearing precursors. The polymers exhibited weight-average molecular weights ranging from M-w = 10 to 57 kDa. The PFMs exhibit photophysical properties, absorbance, and emission consistent with the length of the fluorene sequence. Glass and melting transition temperatures also increase with fluorene segment length.

引用

页码：31 / 35

页数：5

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