Femtosecond transient absorption study of merocyanine J-aggregates

被引：12

作者：

Hamanaka, Y

Kurasawa, H

Nakamura, A

Uchiyama, Y

Marumoto, K

Kuroda, S

机构：

[1] Nagoya Univ, Ctr Integrated Res Sci & Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan

来源：

JOURNAL OF LUMINESCENCE | 2001年 / 94卷 / 94-95期

关键词：

J-aggregate; Frenkel exciton; exciton delocalization length;

D O I：

10.1016/S0022-2313(01)00406-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A delocalization length and dimensionality of Frenkel excitons in 6-methyl merocyanine J-aggregates in Langumuir-Blodgett films have been investigated by means of both an absorption experiment and a pump-probe method. We unambiguously determine a delocalization size from a transition energy of monomers, and exciton energies of the lowest and second-lowest states in J-aggregates. It is found that the J-aggregate structure is two-dimensional, and the exciton state is extended over 26 x 40 molecules. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：451 / 455

页数：5

共 18 条

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