Formation of J-aggregates of mixed merocyanine dyes in Langmuir-Blodgett films

被引：3

作者：

Nakamura, A. ^{[1
]}

Mizutani, Y.

Okuyama, N.

Hamanaka, Y.

Kuroda, S.

机构：

[1] Nagoya Univ, Dept Appl Phys, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Inst Technol, Nagoya, Aichi 4668555, Japan

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2006年 / 284卷 / 89-92期

关键词：

J-aggregate; merocyanine dye; LB film; absorption; photoluminescence;

D O I：

10.1016/j.colsurfa.2005.10.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The formation and stability of J-aggregates of a [6Me-DS](1-x)[DO](x) mixed dye system in Langmuir-Blodgett films have been investigated using absorption and photoluminescence measurements. The variations of the spectral weights of the J-aggregate and DO monomer bands with DO content x allowed us to find that there exist two different regions: phase separation and solid solution. For 0 <= x <= 0.3, J-aggregates are formed from 6Me-DS molecules, and DO molecules exist as a monomer. In the range 0.4 <= x <= 0.8, J-aggregates are stably formed from both 6Me-DS and DO molecules. We have also found that the quantum efficiency of the J-aggregate emission for x = 0.6-0.7 is higher than for the pure 6Me-DS dye system. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：89 / 92

页数：4

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