Issue Eur. Phys. J. AP Volume 18, Number 1, April 2002 Page(s) 3 - 8 Section Structural and Functional Materials DOI 10.1051/epjap:2002020

Eur. Phys. J. AP 18, 3-8 (2002)
DOI: 10.1051/epjap:2002020

Photochromic oligothiophene substituted chromenes a new approach towards a molecular switch: electrical characterisation

A. Yassar¹, H. Jaafari^{1, 2}, N. Rebière-Galy³, M. Frigoli³, C. Moustrou³, A. Samat³ and R. Guglielmetti<sup>3

1</sup>  ITODYS, 1 rue Guy de la Brosse, 75005 Paris, France
²  Laboratoire de chimie organique, Faculté des sciences et techniques, Settat, Morocco
³  LCMOM, ERS CNRS 158, Faculté des sciences de Luminy, 163 avenue de Luminy, 13288 Marseille Cedex 09, France

Yassar@Paris7.Jussieu.fr

(Received: 4 February 2000 / Received in final form: 19 November 2001 / Accepted: 24 January 2002)

Abstract
We present a new approach for the realisation of a molecular photo-switch, based on photochrochromic oligothiophene-substituted chromenes. When optically excited, these compounds undergo a structural change passing from a neutral state (closed form) to a strongly polarized one (open form). This photochromic process is accompanied by a deep changes in the electrical characterisation.

PACS
78.55.Kz - Solid organic materials.
72.20.Jv - Charge carriers: generation, recombination, lifetime, and trapping.
73.61.Ph - Polymers; organic compounds.


© EDP Sciences 2002

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