Solvent dependence of the second order hyperpolarizability in p-nitroaniline
1992; Elsevier BV; Volume: 191; Issue: 3-4 Linguagem: Inglês
10.1016/0009-2614(92)85295-l
ISSN1873-4448
AutoresM. Stähelin, D. M. Burland, Julia E. Rice,
Tópico(s)Chemical synthesis and pharmacological studies
ResumoValues 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.
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