Ruediger Wortmann, C. Poga, et al.
Journal of Chemical Physics
Values of the second order hyperpolarizability β have been determined for p-nitroaniline (PNA) in solvents of varying polarity using the electric field induced second harmonic generation experimental technique. An observed solvent dependence of β0, the second order hyperpolarizability extrapolated to zero-frequency, is correlated with the solvent-induced shift of the PNA charge transfer absorption maximum λmax. The correlation is similar to the correlation between λmax and β0 observed in donor/acceptor p-substituted benzenes with different substituents. Both dependences can be understood within the framework of a simple four level Hückel model. © 1992.
Ruediger Wortmann, C. Poga, et al.
Journal of Chemical Physics
M. Stähelin, Cecilia A. Walsh, et al.
Journal of Applied Physics
C. Poga, D.M. Burland, et al.
Optical Science, Engineering and Instrumentation 1995
D.M. Burland, R.M. Macfarlane
Journal of Luminescence