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Microsolvation of Phthalocyanines in Superfluid Helium Droplets
Author(s) -
Lehnig Rudolf,
Slenczka Alkwin
Publication year - 2004
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200400022
Subject(s) - superfluid helium 4 , helium , dopant , phthalocyanine , emission spectrum , molecule , spectral line , spectroscopy , superfluidity , argon , materials science , chemistry , atomic physics , doping , chemical physics , molecular physics , nanotechnology , condensed matter physics , physics , organic chemistry , optoelectronics , quantum mechanics , astronomy
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 all transitions. Herein, we present the emission spectra of Mg‐phthalocyanine 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.