Polyethyleneoxide-capped phthalocyanines: limiting phthalocyanine aggregation to dimer formation

被引：35

作者：

Dominguez, DD ^{[1
]}

Snow, AW

Shirk, JS

Pong, RGS

机构：

[1] USN, Res Lab, Div Chem, Washington, DC 20375 USA

[2] USN, Res Lab, Div Opt Sci, Washington, DC 20375 USA

来源：

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES | 2001年 / 5卷 / 07期

关键词：

capped phthalocyanine; phthalocyanine dimer; aggregation;

D O I：

10.1002/jpp.365.abs

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis and characterization of a soluble metal-free polyethyleneoxide-capped phthalocyanine and the corresponding lead compound are described. This phthalocyanine was designed to allow the formation of dimers but to inhibit formation of higher aggregates. The monomer/dimer equilibrium constant in chloroform solutions is 750 +/- 201 mol(-1). No evidence for higher aggregates was found. The molecular extinction coefficient of the metal-free polyethyleneoxide-capped phthalocyanine in chloroform is one of the lowest known (2.5 x 10(4) l mol(-1) cm(-1)). The lead-substituted material was demonstrated to be a reverse saturable absorber from 532 nm to about 610 nm. It possesses a large nonlinear absorption coefficient in the visible and is a promising optical limiter material. Published in 2001 by John Wiley & Sons, Ltd.

引用

页码：582 / 592

页数：11

共 29 条

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