Theoretical analysis of the time-dependent triplet-triplet absorption spectrum of anrhracene is cvried out in terms of the Huanp-Rhys spectral function which describes the absorption of molecules thermally equilibrated, due to fast intramolecular processes, al some effective tempera!urc r\*(r) depen
Femtosecond vibrational relaxation of large organic molecules
β Scribed by A.J. Taylor; D.J. Erskine; C.L. Tang
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 572 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0009-2614
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π SIMILAR VOLUMES
Using sub-picosecond ultraviolet and visrble pulses we have studied relaxations from highly-excited molccular vΓ―bronic states witb a resolution of 2 X lOsz s. ## Picosecond pulses have been utilized by a number of workers to investigate radiationless relaxation of large organΓ―c molecules in solut
The bleaching dynamics of organic dye molecules in solution have been investigated using 70 fs pulses from a colliding pulse mode-locked ring dye Laser. In addition to ground state relaxation on a nanosecond time scale, a fast partid recovery 1s observed. For the dyes Nile blue, oxazine 720, cresyl
A new method, femtosecond time-resolved stimulated emission pumping fluorescence depletion (FS TR SEP FD), has been developed to study the vibrational relaxation of electronic excited states of molecules. Two relaxation rates of dye molecules in different solvents have been observed: (i) the intramo
Wc deruonstrdte that the ulhfast rehation obxxvcd in the excited states oflargc org.mc molecules in solution m.~y bc understood 3s the collcrent evolution of the initlally prcparcd non-stationary state. It is shown that under fcmtosccond ewtt.tIion condtttons the relaxation is dctcrmincd by the chrx