Picosecond dynamics

Syage J A, Felker P M and Zewail A H 1984 Picosecond dynamics and photoisomerization of stilbene in supersonic beams. I. Spectra and mode assignments J. Chem. Phys. 81 4685-705... 

Sitzmann E V and Eisenthal K B 1988 Picosecond dynamics of a chemical-reaction at the air-water interface studied by surface second-harmonic generation J. Phys. Chem. 92 4579-80... 

Hare D E, Franken J and DIott D D 1995 A new method for studying picosecond dynamics of shocked solids application to crystalline energetic materials Chem. Phys. Lett. 244 224... 

Antoine, R., Tamburello-Luca, A. A., Hebert, P., Brevet, P. F. and Girault, H. H. (1998) Picosecond dynamics of Eosin B at the air/water interface by time-resolved second harmonic generation orientational randomization and rotational relaxation. Chem. Phys. Lett., 288, 138-146. 

J. A. McCammon, P. G. Wolynes, and M. Karplus, Picosecond dynamics of tyrosine side chains in proteins, Biochemistry 18, 927-942 (1979). 

T. Okamura, M. Sumitani, and K. Yoshihara, Picosecond dynamics Stokes shift of tx-naphthylamine. Chem. Phys. Lett. 94, 339-343 (1983). 

As the picosecond dynamics of the CO and O2 ligand photodissociation in heme-complexes is a topic of current theoretical and experimental interest, certain other work having a bearing on the results in this report should be mentioned. The question of what... 

Kamat PV, Flumiani M, Hartland GV (1998) Picosecond dynamics of silver nanoclusters. Photoejection of electrons and fragmentation. J Phys Chem B 102 3123-3128... 

H. Petek, A. J. Bell, R. L. Christensen, and K. Yoshihara, SPIE, 1638,345 (1992). Vibrational Spectroscopy and Picosecond Dynamics of Gaseous Trienes and Octatetraenes in S, and S2 Electronic States. 

For both excitation frequencies the picosecond dynamics, shown in Fig. 7, can be modelled by the same 13 ps time constant, corresponding to the... 

This is a general scheme, which can allow for additional considerations and further approximations. First, the average with respect to picosecond dynamic processes is carried out, in practice, together with the average with respect to solvent coordinates to allow the QM evaluation of magnetic tensors corrected for solvent effects and for fast vibrational and solvent librational motions. The effective treatment of these aspects represents the heart of this contribution. 

Liu, D. Kamat, P. V. Picosecond dynamics of cresyl violet H-aggregates adsorbed on Si02 and Sn02 nanocrystallites, J. Phys. Chem. 1996, 105, 965. 

Keywords Statistical simulations, Structure of liquids, Picosecond dynamics, Ab initio simulation... 

Kamat P.V. and Shanghavi B. (1997) Interparticle electron transfer in metal / semiconductor composites. Picosecond dynamics of CdS-capped gold nanoclusters J. Phys. Chem. B, 101 7675-7679. 

T. S. Ahmadi S. L. Logunov M. A. El-Sayed, Picosecond dynamics of colloidal gold nanoparticles. /. Phys. Chem. 1996, 100, 8053-8056. 

P. V. Kamat M. Flumiani G. Hartiand, Picosecond dynamics of Silver nanoclusters. Photoejection of electrons and fragmentation. /. Phys. Chem. B 1998, 302, 3123-3128. 

The picosecond dynamics of barrier crossing in the conformational change of 1,1 -binapthyl in a series of alcohol... 

The main message from this class of experiments is that the details of the surface do affect the carrier relaxation. In the presence of surface defects associated with conventional surface preparation, the carrier relaxation in the surface region is exceptionally fast relative to bulk processes (10-100 fs dynamics). As can be seen by comparing the dynamics shown in Fig. 2.9, the effect of the surface is to increase the rate of relaxation and thermalisation. The asymmetry, more anharmonic character to the surface modes and increased mixing of states at defect sites all conspire to speed up the relaxation processes. With proper attention to surface structure, it is possible to intervene in the relaxation process and achieve carrier and phonon scattering rates that approach bulk processes. In this limit, 200 fs to picosecond dynamics define the operative time scales. 

Kasinski J. J., Gomez-Jahn L. A., Faran K. J., Gracewski S. M. and Miller R. J. D. (1989), Picosecond dynamics of surface electron-transfer processes—surface restricted transient grating studies of the n-TiOa/HaO interface , J. Chem. Phys. 90, 1253-1269. 

Fluorescence Lifetimes and Picosecond Dynamics. The fluorescence lifetime (ts) of fran.s -stilbenes at room temperature is rather short. A value of approximately lOOps may be estimated from radiative rate constant ( r) using ts = f//rr [295]. Direct lifetime measurements with picosecond laser pulses confirm this finding (Table 14). Important progress in understanding of the excited state dynamics was achieved in several laboratories [314-375], especially by Yoshihara [314 319], Hochstrasser [262, 320 335], Fleming [343-348], Troe [352 355], Zewail [361-364] and their co-workers. Saltiel and Sun [28] extensively discussed the literature con-... 

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