Photon echo peak shift experiments in the UV: p-terphenyl in different solvents
We present a new photon echo set-up operating in the UV range and our 1st results of photon echo peak shift (PEPS) expts. of a small non-polar dye mol., p-terphenyl (pTP), in 3 different solvents: EtOH, MeOH, and 2-propanol. The expts. show the feasibility of UV transient grating and photon echo measurements and highlight the sensitivity of this technique for the study of non-polar solvation dynamics. The transient grating expts. indicate a relaxation of the ground state hole of about 6 ps. The photon echo expts. show that while electronic dephasing occurs on timescales <100 fs, solvation dynamics timescales are in the picosecond regime, in agreement with the literature.
Optical, Electron, and Mass Spectroscopy and Other Related Properties
Laboratoire de Spectroscopie Ultrarapide, ISIC, FSB, BSP,Ecole Polytechnique Federale de Lausanne (EPFL),Lausanne,Switz.
written in English.
92-94-4 (p-Terphenyl) Role: PEP (Physical, engineering or chemical process), PRP (Properties), PROC (Process) (photon echo peak shift expts. in UV of p-terphenyl in different solvents)
Record created on 2009-03-18, modified on 2016-08-08