Photo-induced reorganization of molecular packing of amphi-PIC J-aggregates (single J-aggregate spectroscopy)

被引：15

作者：

Malyukin, YV ^{[1
]}

Sorokin, AV ^{[1
]}

Yefimova, SL ^{[1
]}

Lebedenko, A ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Single Crystals, UA-61001 Kharkov, Ukraine

来源：

JOURNAL OF LUMINESCENCE | 2005年 / 112卷 / 1-4期

关键词：

amphi-PIC;

D O I：

10.1016/j.jlumin.2004.09.082

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Confocal luminescence microscopy has been used to excite and collect luminescence from single amphi-PIC J-aggregate. Two types of J-aggregates have been revealed in the luminescence image: bead-like J-aggregates, which diameter is less than I pm and rod-like ones, which length is about 3 pm and diameter is less than I pm. It has been found that single rod-like and bead-like J-aggregates exhibit different luminescence bands with different decay parameters. At the off-resonance blue tail excitation, the J-aggregate exciton luminescence disappeared within a certain time period and a new band appeared, which cannot be attributed to the monomer emission. The luminescence image shows that the J-aggregate is not destroyed. However, J-aggregate storage in darkness does not recover its exciton luminescence. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：429 / 433

页数：5