Spectroscopic study of non-amphiphilic 9-phenylanthracene assembled in Langmuir-Blodgett films mixed with stearic acid

被引：7

作者：

Parichha, TK ^{[1
]}

Talapatra, GB ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Spect, Calcutta 700032, W Bengal, India

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1999年 / 60卷 / 01期

关键词：

mono- and multilayers; scanning electron microscopy; optical properties;

D O I：

10.1016/S0022-3697(98)00252-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper reports the incorporation of a non-amphiphilic aromatic hydrocarbon, 9-phenylanthracene (PA), in Langmuir-Blodgett (LB) films mixed with stearic acid (SA), and their spectroscopic properties. The surface pressure-area per molecule isotherms mixed with SA were measured at different molar ratios. From the investigation of absorption and emission spectra and scanning electron microscopy, PA is found to form aggregates. A broad emission was found in both LB films and ethanol-water mixtures, with a maximum at similar to 475 nm at room temperature, which is probably aggregation induced. At 77 K, the emission maximum was found to be at similar to 508 nm. Emission shift as a result of temperature is explained in terms of exciton-phonon coupling. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：111 / 118

页数：8

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