Self-Aggregation Processes of 1,6-Diphenyl-1,3,5-Hexatriene in Water/Ethanol Mixtures with High Water Percentages-Reference-Cited by-同舟云学术

Self-Aggregation Processes of 1,6-Diphenyl-1,3,5-Hexatriene in Water/Ethanol Mixtures with High Water Percentages

Published:2011-06 Issue:6 Volume:65 Page:604-610
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

Author:

Gracetto Augusto C.¹,Tessaro André L.¹,De Souza Vagner R.¹,Caetano Wilker¹,Pontes Rodrigo M.¹,Batistela Vagner R.¹,De Oliveira Hueder P. M.¹,Hioka Noboru¹

Affiliation:

1. Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5790. Maringá, PR, Brazil. Cep 87.020-900 (A.C.G., A.L.T., V.R.S., W.C., R.M.P., V.R.B., N.H.); and Universidade Camilo Castelo Branco. S.J. Campos, SP, Brazil (H.P.M.O.)

Abstract

This work describes the behavior of 1,6-diphenyl-1,3,5-hexatriene (DPH) in ethanol/water mixtures. The dependence of DPH photophysical properties (absorption and fluorescence emission) on the water percentage in ethanol indicates that DPH undergoes self-aggregation processes in solvent conditions above a critical water content. Evidence such as an additional absorption band, Beer's law deviation, kinetic behavior, and other experimental results obtained from temperature variation and surfactant addition demonstrated the presence of several types of DPH aggregates. Resonance light scattering measurements proved that the aggregate grew in water-rich media by a self-catalyzed process.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Link

http://journals.sagepub.com/doi/pdf/10.1366/10-06161

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