The lowest excited electronic singlet states of all-trans β-carotene single crystals
作者： K. Gaier , A. Angerhofer , H.C. Wolf
DOI: 10.1016/0009-2614(91)90492-R
关键词: Raman spectroscopy 、 Crystal 、 Fluorescence 、 Absorption edge 、 Chemistry 、 Singlet state 、 Molecular electronic transition 、 Resonance 、 Atomic physics 、 Excited state
摘要: Abstract Absorption, fluorescence emission, reflectance, resonance Raman, and Raman excitation spectra were recorded of single crystals all-trans β-carotene. The 0—0 band the S 0 →S 2 allowed electronic transition is found at 18700±50 cm −1 . emission consists two components, major originating out state show bands in pre-resonance region below absorption edge crystal. They may be interpreted as transitions to optically forbidden 1 A g (S ).
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