Picosecond‐Duration Vibrational Relaxation Kinetics in the Excited S1 State of Perylene and Anthracene Molecules | Zendy

Arvi Freiberg | Zendy; Tiina Tamm | Zendy; K. Timpmann | Zendy

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Picosecond‐Duration Vibrational Relaxation Kinetics in the Excited S₁ State of Perylene and Anthracene Molecules

Author(s) -

Arvi Freiberg,

Tiina Tamm,

K. Timpmann

Publication year - 1983

Publication title -

laser chemistry

Language(s) - English

Resource type - Journals

eISSN - 1026-8014

pISSN - 0278-6273

DOI - 10.1155/lc.3.249

Subject(s) - perylene , picosecond , anthracene , chemistry , excited state , vibrational energy relaxation , kinetics , relaxation (psychology) , molecule , photochemistry , atomic physics , optics , physics , organic chemistry , psychology , social psychology , laser , quantum mechanics

We present and discuss the results of a direct observation of the picosecond rangetemporal behavior of vibronic lines in the luminescence spectrum of the matrix-isolatedperylene and anthracene molecules. A novel subtractive dispersion mount of monochromatorsin conjunction with the synchroscan streak camera has been used. Fromspectrochronograms measured at different excitation wavelengths the vibrationalenergy relaxation times have been obtained. These are in the range of 20–30 ps andare most probably determined by the existence of the phonon bath of the matrix. Acomparison of the measured relaxation constants with those estimated from thesteady-state hot luminescence spectrum has been made.

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