E. Hendrickx et al., QUADRATIC NONLINEAR-OPTICAL PROPERTIES OF CORRELATED CHROMOPHORES - CYCLIC 6,6'-DINITRO-1,1'-BINAPHTHYL-2,2'-ETHERS, Chemical physics letters, 270(1-2), 1997, pp. 241-244
The first hyperpolarizability, beta, of a series of cyclic 6,6'-dinitr
o-1,1'-binaphthyl-2,2'-ethers has been analyzed with hyper-Rayleigh sc
attering and electric-field-induced second-harmonic-generation and com
pared with the absorption data and semi-empirical calculations. The re
sults show the critical dependence of beta on the conformation of the
alkoxy donor and the dihedral angle of the binaphthyl unit.