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Citation: Wang Wen-Jun, Xu Jian-Hua, Lu Xing-Ze, Han Kui, Wang ng-Ming, Wang Wen-Cheng, Cai Zhi-Gang, Yang Pei-Qing, Zhou Jian-Ying. Influence of the Interlayer Interactions on Aggregates in Organic Molecular Films[J]. Acta Physico-Chimica Sinica, ;1999, 15(05): 471-475. doi: 10.3866/PKU.WHXB19990517 shu

Influence of the Interlayer Interactions on Aggregates in Organic Molecular Films

1.
State Key Joint Laboratory for Materials Modefication by Laser,Ion and Electron Beams,Department of Physics,Fudan Unviersity,Shanghai 200433

Received Date: 27 July 1998
Available Online: 15 May 1999

Influence of the interlayer interactions on aggregates in Y-type Langmuir-Blodgett multilayers was investigated by using steady-state and time-resolved fluorescence techniques. As the interlayer interactions was screened by arachidic acid layers, intralayer interaction of hemicyanine molecules caused formation of H-aggregates and a blue shift of the fluorescence band in interleaving hemicyanine/arachidic acid multilayers. In pure Y-type hemicyanine multilayers, however, the molecules mainly formed J-aggregates leading to a significant red shift of fluorescence band and a larger scale of aggregates due to the stronger interlayer interactions.
- Langmuir-Blodgett(LB) multilayers,
- Aggregate,
- Time-resolved fluorescence
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