ASE and photodegradation of two benzimidazole derivatives proton transfer dyes in polymeric matrices

C.E Fellows,Diego F Acevedo,C.E.M Carvalho,U Täuber,Sonia G Bertolotti,C.C Rodegheri,Cesar Barbero

doi:10.1016/j.optmat.2004.04.011

ASE and photodegradation of two benzimidazole derivatives proton transfer dyes in polymeric matrices

C.E Fellows, Diego F Acevedo + Show 5 more

https://doi.org/10.1016/j.optmat.2004.04.011

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Journal: Optical Materials	Publication Date: Sep 16, 2004
Citations: 11

Affiliation: Universidade Federal Fluminense, National University of Río Cuarto

#Amplified Stimulated Emission #Proton Transfer Dyes + Show 8 more

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Abstract

Abstract We report the preparation and spectral characteristics of solid polymeric hosts doped with proton-transfer dyes 2-(2′-hydroxyphenyl)benzimidazole (HPBI) and 2-(2′-hydroxy-5′-chlorphenyl)benzimidazole (Cl-HPBI). The material shows amplified stimulated emission (ASE) under 337 nm pulse excitation. In comparing with PMMA, PS and a 1:1 PS/PMMA copolymer as host material the latter shows improved properties relating to efficiency and photo stability. For all samples we observed a shortening in ASE pulse width during emission due to photo degradation.

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