Molecular hyperpolarizabilities of retinal derivatives

Citation
Ag. Bezerra et al., Molecular hyperpolarizabilities of retinal derivatives, J CHEM PHYS, 111(11), 1999, pp. 5102-5106
Citations number
34
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF CHEMICAL PHYSICS
ISSN journal
00219606 → ACNP
Volume
111
Issue
11
Year of publication
1999
Pages
5102 - 5106
Database
ISI
SICI code
0021-9606(19990915)111:11<5102:MHORD>2.0.ZU;2-Y
Abstract
We report measurements of the third-order optical susceptibilities of 13-ci s and all-trans retinal derivatives in chloroform liquid solutions using th e Z scan and the optical Kerr gate techniques, with laser pulses of 70 ps a nd 60 fs, at 532 and 800 nm, respectively. The corresponding second hyperpo larizabilities of those molecules are estimated and the results compared to those obtained from semiempirical time-dependent Hartree-Fock calculations . The observed trends for the values of the nonlinear response are explaine d in terms of the pi electron delocalization along the polyenic chain of th e molecules. (C) 1999 American Institute of Physics. [S0021-9606(99)50435-2 ].