Aggregates of quadrupolar dyes: Giant two-photon absorption from biexciton states

被引：46

作者：

D'Avino, Gabriele

Terenziani, Francesca

Painelli, Anna

机构：

[1] Univ Parma, Dipartimento Chim, GIAF, I-43100 Parma, Italy

[2] Univ Parma, INSTM, UdR Parma, I-43100 Parma, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 51期

关键词：

D O I：

10.1021/jp0673361

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：

A model for aggregates of quadrupolar (DAD or ADA) molecules is presented that relaxes the dipolar approximation for intermolecular electrostatic interactions. New effects, including the appearance of bound biexcitons in clusters of nonpolar molecules, are predicted with interesting and unforeseen consequences on the material properties. Specifically, we show that the large two-photon absorption cross-section, typical of quadrupolar chromophores, can be further amplified by orders of magnitude as a result of aggregation.

引用

收藏

页码：25590 / 25592

页数：3

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