POLY[OMEGA-HYDROXYALKYL)THIO-ALPHA-CYANOCINNAMATES] - LINEAR POLYESTERS WITH NLO-PHORES IN THE MAIN CHAIN

被引：67

作者：

FUSO, F ^{[1
]}

PADIAS, AB ^{[1
]}

HALL, HK ^{[1
]}

机构：

[1] UNIV ARIZONA,DEPT CHEM,CS MARVEL LABS,TUCSON,AZ 85721

来源：

MACROMOLECULES | 1991年 / 24卷 / 08期

关键词：

D O I：

10.1021/ma00008a002

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

To obtain optically clear (amorphous), processable, film-forming polymers with high concentrations of nonlinear optically active units ("NLO-phores") distributed in the same direction along a polymer chain and possessing high glass transition temperatures, p-[(omega-hydroxyalkyl)thio]-alpha-cyanocinnamates were synthesized and polymerized. The key steps in the syntheses were nucleophilic displacement by omega-hydroxyalkane thiols on p-fluorobenzaldehyde, followed by Knoevenagel condensation with methyl cyanoacetate. When the alkyl group was ethyl, 1,6-hexyl, or trans-cyclohexyldimethyl, the homopolymers were highly crystalline and insoluble in spin-coating solvents. Copolymerization with methyl 12-hydroxydodecanoate gave amorphous, dichloromethane-soluble copolymers with T(g)'s below room temperature. A "copolymer" containing cis- and trans-1,4-cyclohexyldimethyl units was optically clear and dichloromethane-soluble, had T(g) = 102-degrees-C, and was our best material for future studies of NLO activity.

引用

页码：1710 / 1713

页数：4

共 12 条

[1] PREPARATION OF THIOLS [J].