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Control of the Luminescence Properties in Polythiophenes Solutions by Interring Rotational Disorder

Published online by Cambridge University Press:  10 February 2011

S. Luzzati ,
G. Bongiovanni ,
M. Catellani ,
M. A. Loi ,
A. Milani ,
A. Mura  and
A. Piaggi
S. Luzzati
Affiliation:
Istituto di Chimica delle Macromolecole and MITER, CNR, Italy
G. Bongiovanni
Affiliation:
Dipartimento di Scienze Fisiche, Università di Cagliari, Italy
M. Catellani
Affiliation:
Istituto di Chimica delle Macromolecole and MITER, CNR, Italy
M. A. Loi
Affiliation:
Istituto di Chimica delle Macromolecole and MITER, CNR, Italy
A. Milani
Affiliation:
Istituto di Chimica delle Macromolecole and MITER, CNR, Italy
A. Mura
Affiliation:
Dipartimento di Scienze Fisiche, Università di Cagliari, Italy
A. Piaggi
Affiliation:
Istituto di Matematica e Fisica and INFM, Università di Sassari, Sassari, Italy
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Abstract

The photoluminescence properties of thiophene-based polymers obtained by the random copolymerization of 3,4-dibutylthiophene and 3-butylthiophene are reported. Optical absorption spectra, cw photolumninescence (PL) spectra, PL quantum efficiencies and PL decays have been measured in dilute solutions. By varying the copolymer chemical composition it is possible to tune the intensity and the color of the luminescence spectra in the whole visible range. We evidence the role of disorder, controlled by interring rotations, as the tuning factor for the disexcitation pathway of the photoexcitations in these materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 488: Symposium J – Electrical, Optical & Magnetic Properties of Organic IV , 1997 , 829
Copyright
Copyright © Materials Research Society 1998

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