Photophysical properties of 4-methyl 3-phenyl coumarin organized in Langmuir-Blodgett films: Formation of aggregates

被引：7

作者：

Acharya, Somobrata

Kamilya, Tapanendu

Sarkar, Jyotirmoy

Parichha, Tapan Kr.

Pal, Prabir

Talapatra, G. B. ^{[1
]}

机构：

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

[2] Ben Gurion Univ Negev, Dept Chem, IL-84105 Beer Sheva, Israel

[3] Suri Vidyasagar Coll, Dept Chem, Suri, Birbhum, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2007年 / 104卷 / 01期

关键词：

Langmuir-Blodgett films; aggregates; emission spectroscopy; scanning electron microscopy;

D O I：

10.1016/j.matchemphys.2007.02.087

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Langmuir-Blodgett (LB) films of 4-methyl 3-phenyl coumarin (MPC), a non-amphiphilic derivative of coumarin mixed with stearic acid (SA) are studied. The surface pressure-area (pi-A) isotherm study at air-water interface reveals a repulsive type of interaction between the MPC and SA molecules resulting in the formation of aggregates of MPC molecules. Absorption, fluorescence and phosphorescence studies indicate the formation of J-type aggregate in LB film. Low temperature (77 K) phosphorescence lifetime is found to be decreased due to aggregate formation. Micro structured aggregates are observed after examining the surface morphology of LB film by scanning electron microscopy (SEM). (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：88 / 92

页数：5

共 19 条

[1] Spectroscopic characteristics of 9-cyanoanthracene mixed with polymethyl methacrylate and stearic acid in Langmuir-Blodgett films [J].