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.

Aggregates of Quadrupolar Dyes: Giant Two-Photon Absorption from Biexciton States / D'Avino, Gabriele; Terenziani, Francesca; Painelli, Anna. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - 110:51(2006), pp. 25590-25592. [10.1021/jp0673361]

Aggregates of Quadrupolar Dyes: Giant Two-Photon Absorption from Biexciton States

D'AVINO, Gabriele;TERENZIANI, Francesca;PAINELLI, Anna
2006-01-01

Abstract

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.
2006
Aggregates of Quadrupolar Dyes: Giant Two-Photon Absorption from Biexciton States / D'Avino, Gabriele; Terenziani, Francesca; Painelli, Anna. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - 110:51(2006), pp. 25590-25592. [10.1021/jp0673361]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/1511379
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