Surface potential of photochromic poly(L-lysine) monolayers

被引：13

作者：

Ahluwalia, A ^{[1
]}

Piolanti, R ^{[1
]}

DeRossi, D ^{[1
]}

Fissi, A ^{[1
]}

机构：

[1] CNR,INST BIOPHYS,I-56126 PISA,ITALY

来源：

LANGMUIR | 1997年 / 13卷 / 22期

关键词：

D O I：

10.1021/la970157d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The surface potentials of monolayers of two polymers containing azobenzene-substituted sidechains have been measured. The measurements were made on the ''dark'' (100% trans) and ''UV irradiated'' (90% cis, 10% trans) forms of the polymers, which were a 100% and a 43% azobenzene-substituted poly(L-lysine), respectively. The results were applied to the Demchak and Fort electrostatic model of a monolayer and to the inverted cone model first described by Oliveira et al. to determine the angle of inclination of the dipole moment of the azobenzene cis isomer in the ''UV irradiated'' monolayer. Our estimates for this angle suggest that the cis isomer in both polymers lies approximately perpendicular to the interface.

引用

页码：5909 / 5913

页数：5

共 20 条

[1]

AHLUWALIA A, UNPUB ELLIPSOMETRIC

[2]

[Anonymous], MATLAB OPT TOOLB

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