期刊
CHEMPHYSCHEM
卷 5, 期 7, 页码 1014-1019出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.200400022
关键词
fluorescence spectroscopy; helium droplets; host-guest systems; phthalocyanines; superfluidity
Experimental and theoretical investigations of the spectroscopy of molecules in superfluid helium droplets provide evidence for the key role of the first helium layer surrounding the dopant molecule in determining the molecule's spectroscopic features. Recent investigations of emission spectra of phthalocyanine in helium droplets revealed a doubling of oil transitions. Herein, we present the emission spectra of Mg-phtholocyanine and of phthalocyanine-argon clusters in helium droplets, which confirm the splitting as a general effect of the helium environment. A scheme of levels is deduced from the emission spectra and attributed to quantized states of the first helium layer surrounding the dopant molecule.
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