New details of the dynamics and spectroscopy of trans-stilbene are revealed by picosecond excitation of jet-cooled and collision-free molecules. The fluorescence spectra clearly show the low-frequency torsional modes of the ground state. The time-resolved fluorescence following $1 excitation exhibit
Picosecond dynamics of the singlet excited state of trans- and cis-stilbene
β Scribed by Omar Teschke; E.P. Ippen; Gary R. Holtom
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 246 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Sub-picosecond ultr:lvtolet and visible pulses have been aed to study tile dynamic\ of mt~~unolccu1.u motion m the CYcited \inglet state of stilbcnc. In both tracts-and cis-stdhcne, e\cltcd state dbsorptlon 15 observed to tlecrc.i\e rapIdly .I\ the imtially excited singlet 5t.itc rclaucs tc, its conform~tton.ll cctu~hhriuni.
π SIMILAR VOLUMES
Using degenerated four wave mixing techniques and optical Kerr effect we studied the optical non-linearities of excited t-stilbene solution. Strong enhancement of the non-linear signal between the excited and ground states is observed and related to the third order non-linear susceptibility ( xc3))
Using spin-unrestricted density functional theory (the VWN Becke-Perdew potential), including broken-symmetry and spin-projection methods, we have obtained the potential-energy curves as a function of the central torsional angle of stilbene in the ground (S0), the first excited triplet (T1), the fir