Optical transverse excitation in quaterthiophene crystals by ultraviolet-visible internal and attenuated total reflection

Raimondo, L., Laicini, M., Tavazzi, S., Borghesi, A. and Spearman, P. (2005) Optical transverse excitation in quaterthiophene crystals by ultraviolet-visible internal and attenuated total reflection. The Journal of Chemical Physics, 122(6), 064706-064711. ISSN (print) 0021-9606

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Abstract

We report internal and attenuated total reflection of light at the interface between glass and a quaterthiophene crystal in the spectral region of the electronic transitions. The bands corresponding to the absorption of the a(u) and b(u) Frenkel exciton states are detected for different polarization of the incident light. In particular, the wave-normal vector being almost perpendicular to the b(u) transition dipole moment allows its transverse component to be accessed, whose excitation in conventional external reflection or transmission spectroscopies is forbidden.

Item Type: Article
Uncontrolled Keywords: single-crystals, alpha-sexithiophene, spectra, absorption
Research Area: Chemistry
Physics
Faculty, School or Research Centre: Faculty of Science (until 2011)
Related URLs:
Depositing User: Katrina Clifford
Date Deposited: 18 Nov 2009 09:21
Last Modified: 25 Nov 2011 11:51
URI: http://eprints.kingston.ac.uk/id/eprint/6030

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