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ELECTRONIC SPECTRA OF BENZENE ISOTOPOMERS IN HELIUM NANODROPLETS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/20850

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Title: ELECTRONIC SPECTRA OF BENZENE ISOTOPOMERS IN HELIUM NANODROPLETS
Creators: Carcabal, Pierre; Schmied, Roman; Lehmann, K. K.; Scoles, G.
Issue Date: 2003
Abstract: We have recorded high-resolution ultraviolet spectra of four benzene isotopomers $(C_{6}H_{6}$, $C_{6}H_{5}D$, $1,3,5-C_{6}H_{3}D_{3}$, and $C_{6}D_{6})$ in helium nanodroplets in the region of the first Herzberg-Teller allowed vibronic transition $^{1}B_{2u} \leftarrow^{1}A_{1g} 6^{1}_{0}$. The spectra could not be observed by laser-induced fluorescence, but were recorded by beam depletion using bolometric detection. Like tetracene and pentacene,$^{a}$ these benzene isotopomers show multiple absorption lines spread over ${\sim} 10 cm^{-1}$. The structures of these lines are found to be qualitatively different for the various isotopomers. The zero-phonon lines are blue shifted with respect to the gas phase transitions by 3 to $4 cm^{-1}$, as predicted by $Even et al.^{b}$
URI: http://hdl.handle.net/1811/20850
Other Identifiers: 2003-RB-04
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