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Issue 22, 2000
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Spectroscopic evidence for adsorption-induced polymerisation of terthiophene at silver surfaces

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Abstract

The adsorption process of 2,2′: 2′,5″-terthiophene molecules on two different types of silver surfaces was studied by means of surface enhanced Raman scattering (SERS) and UV–Vis absorption spectroscopy. Both techniques support the hypothesis of an adsorption-induced polymerisation process of these molecules. The vibrational pattern of the chemisorbed layer was found to be almost identical with that of bulk polythiophene samples and a red shift from 3.5 to 2.5 eV of the electronic absorption is observed in agreement with the Kuhn–Kuhn model. A concomitant decrease in visible photoluminescence was also observed.

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Publication details

The article was received on 21 Jul 2000, accepted on 25 Sep 2000 and first published on 26 Oct 2000


Article type: Paper
DOI: 10.1039/B005892K
Citation: Phys. Chem. Chem. Phys., 2000,2, 5298-5301
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    Spectroscopic evidence for adsorption-induced polymerisation of terthiophene at silver surfaces

    G. Compagnini, A. De Bonis, R. S. Cataliotti and G. Marletta, Phys. Chem. Chem. Phys., 2000, 2, 5298
    DOI: 10.1039/B005892K

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