Exciton coupling model for the emergence of second harmonic generation from assemblies of centrosymmetric molecules.

As such, their contributions would be unlikely to be perturbed by the solvent-mediated recrystallization. This observation is in noteworthy contrast to vibrational SFG measurements of the benzene/air interface, in which calculations and measurements suggest quadrupole effects may be significant. 10 , 11 Furthermore, SHG arising from trace impurities can similarly be excluded, as they would be present in equal quantities before and after exposure to solvent vapor.

also in 10,445 other papers