Title of article
Luminescence intensity enhancement induced by laser irradiation in poly(vinyl alcohol) and poly(3-thiopheneacetic acid) blend
Author/Authors
de Souza، نويسنده , , Jucimar M and dos Anjos، نويسنده , , Paulo N.M. and Pereira، نويسنده , , Ernesto C. and Gobato، نويسنده , , Déborah Yara Alves Cursino dos Santos، نويسنده , , Lindomar S، نويسنده ,
Issue Information
دوماهنامه با شماره پیاپی سال 2002
Pages
8
From page
121
To page
128
Abstract
Photoluminescence (PL) of polymeric blends with poly(vinyl alcohol) (PVA) and poly(3-thiopheneacetic acid) (PTAA) was investigated. We found an increase in the PL intensity induced by laser irradiation. The PL quantum efficiency was dependent on irradiation time, laser intensity, and PTAA doping state (acid or salt). PL intensity increased up to 200% for acid PTAA and 50% for salt PTAA. The PL efficiency relative enhancement was 314% for acid PTAA and 140% for salt PTAA. Using infrared spectroscopy, we related this effect to hydrogen bond interaction between PTAA and PVA excited states induced by laser irradiation that reduced the non-radiative decay rate.
Keywords
Photoluminescence , polythiophene and derivates , Laser spectroscopy , UV-VIS-IR absorption
Journal title
Synthetic Metals
Serial Year
2002
Journal title
Synthetic Metals
Record number
2076743
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