Absorption spectroscopy of adenine, 9-methyladenine, and 2-aminopurine in helium nanodroplets

文献情報

出版日 2010-08-02

DOI 10.1039/C0CP00746C

インパクトファクター 3.676

著者

Szymon Smolarek, Anouk M. Rijs, Wybren Jan Buma, Marcel Drabbels

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要旨

High-resolution absorption spectra of adenine, 9-methyladenine and 2-aminopurine in helium nanodroplets have been recorded. In contrast to molecular beam experiments, large variations in linewidths are observed for adenine and 9-methyladenine. At the same time, the spectrum of 2-aminopurine remains sharp upon solvation in helium droplets. The line broadening observed for adenine and 9-methyladenine is attributed to a significant decrease of the lifetime of the 1Lb(ππ*) state and of 1nπ* levels vibronically coupled to this state. The origin of the lifetime reduction is argued to be related to the increased accessibility of the 1nπ*/1Lb(ππ*) conical intersection upon solvation of these molecules in liquid helium.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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