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Relationship Between Spectroscopic and Structural Properties of Poly(meta/para Phenylene)

Published online by Cambridge University Press:  21 March 2011

Cherif. Dridi ,
Joël. Davenas ,
Ahmed. Touhami ,
Hafedh. Ben Ouada ,
Hassen. Mâaref  and
Jean-Jacques. André
Cherif. Dridi
Affiliation:
Laboratoire de Physique des Interfaces et des semi-conducteurs, Département de Physique, Faculté des sciences de Monastir, 5000 Monastir, Tunisia Laboratoire des Matériaux Polyméres et des Biomatériaux, Bât. ISTIL, Université Claude -Bernard Lyon1, 43, Boulevard du 11 Novembre 1911, 69622 Villeurbanne, Cedex France
Joël. Davenas
Affiliation:
Laboratoire des Matériaux Polyméres et des Biomatériaux, Bât. ISTIL, Université Claude -Bernard Lyon1, 43, Boulevard du 11 Novembre 1911, 69622 Villeurbanne, Cedex France
Ahmed. Touhami
Affiliation:
Laboratoire de Physique des Interfaces et des semi-conducteurs, Département de Physique, Faculté des sciences de Monastir, 5000 Monastir, Tunisia
Hafedh. Ben Ouada
Affiliation:
Laboratoire de Physique des Interfaces et des semi-conducteurs, Département de Physique, Faculté des sciences de Monastir, 5000 Monastir, Tunisia
Hassen. Mâaref
Affiliation:
Laboratoire de Physique des Interfaces et des semi-conducteurs, Département de Physique, Faculté des sciences de Monastir, 5000 Monastir, Tunisia
Jean-Jacques. André
Affiliation:
Institut Charles-Sadron, 6 Rue Boussingault, 67083 Strasbourg Cedex, France
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Abstract

We have used electron paramagnetic resonance (EPR) spectroscopy for investigating the properties of spins, such as those carried by polarons which carry both spin and charge in an electrosynthesized poly (meta/para phenylene) PMPP.Indeed, the study of their mobility provides an insight into the charge transport properties of the conjugated polymer in a microscopic scale.Moreover, we report a correlation between thin film morphology, chainlength and optical gap.Particularly, we show a blue shift upon decreasing chainlength. Furthermore, we have observed a blue shift of the energy band gap with the decrease of the surface grain size deduced from atomic force microscopy (AFM) analyses. This result has been explained in terms of quantum confinement.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB3.70
Copyright
Copyright © Materials Research Society 1999

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