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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. Jaafari1, 2, N. Rebière-Galy3, M. Frigoli3, C. Moustrou3, A. Samat3 and R. Guglielmetti31 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.
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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