MONOLAYERS AND Z-TYPE MULTILAYERS OF DONOR-SIGMA-ACCEPTOR MOLECULES WITH ONE, 2, AND 3 DODECOXY TAILS

被引：30

作者：

METZGER, RM ^{[1
]}

WISER, DC ^{[1
]}

LAIDLAW, RK ^{[1
]}

TAKASSI, MA ^{[1
]}

MATTERN, DL ^{[1
]}

PANETTA, CA ^{[1
]}

机构：

[1] UNIV MISSISSIPPI,DEPT CHEM,UNIVERSITY,MS 38677

来源：

LANGMUIR | 1990年 / 6卷 / 02期

关键词：

D O I：

10.1021/la00092a011

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pockels-Langmuir and Langmuir-Blodgett monolayer films have been found for the 2-(4-nitrophenyl)ethyl esters of iV-(4-dodecoxyphenyl)carbamic acid (DDOP-C-ENP, 7) and iV-(3,4,5-tridodecoxyphenyl)carbamic acid (TDDOP-C-ENP, 9) and also for the (2-hydroxyethoxy)-7,7,8,8-tetracyanoquinodimethane ester of iV-(3,4,5-tridodecoxyphenyl)carbamic acid (TDDOP-C-HETCNQ, 10). However, monolayers were not formed for the 2-(4-nitrophenyl)ethyl esters of N-( 3,5-didodecoxyphenyl)carbamic acid (BDDOP-C-ENP, 8). The pressure-area isotherms vary greatly depending on the number of dodecoxy groups attached to these donor-σ-acceptor molecules. The film strength improves dramatically by lowering the subphase temperature. The molecular area appears to be defined by the acceptor end for DDOP-C-ENP, 7, but by the dodecyoxy donor end (for both TDDOP-C-ENP, 9, and TDDOP-C-HETCNQ, 10). Noncentrosymmetric Z-type LB multilayers are obtained for DDOP-C-ENP, TDDOP-C-ENP, and TDDOP-C-HETCNQ. This suggests some interesting nonlinear optical properties for these multilayers. © 1990, American Chemical Society. All rights reserved.

引用

页码：350 / 357

页数：8

共 37 条

[1] 7,7,8,8-TETRACYANOQUINODIMETHANE AND ITS ELECTRICALLY CONDUCTING ANION-RADICAL DERIVATIVES [J].