Theoretical study on the absorption spectra of pseudoisocyanine bromide (PIC-Br) molecular J-aggregates

被引：27

作者：

Kato, T ^{[1
]}

Sasaki, F ^{[1
]}

Abe, S ^{[1
]}

Kobayashi, S ^{[1
]}

机构：

[1] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

来源：

CHEMICAL PHYSICS | 1998年 / 230卷 / 2-3期

关键词：

D O I：

10.1016/S0301-0104(98)00008-1

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 linear dichroic absorption spectrum of pseudoisocyanine bromide (PIC-Br) molecular J-aggregates is theoretically analyzed by using the dynamical coherent potential approximation and numerical calculations. The absorption spectra with the electric field polarization parallel and perpendicular to the one-dimensional axis of the oriented J-aggregates are well explained in terms of Davydov components. Above the one-phonon continuum in the dispersion curve of the exciton-phonon system, splitting off of an exciton polaron band is observed. This exciton polaron state is assigned to the largest peak in the case of the latter polarization. The absorption intensity differences between the lowest peak and the 2nd peak observed in two polarization conditions are simply explained by the character of relevant states. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：209 / 221

页数：13

共 27 条

[1] DEPENDENCE OF RAMAN-SCATTERING BY AGGREGATED 2,2'-CYANINE ON PH AND EXCITATION WAVELENGTH [J].