Determination of the quadratic hyperpolarizability of trans-4-[4-(dimethylamino)styryl]pyridine and 5-dimethylamino-1,10-phenanthroline from solvatochromism of absorption and fluorescence spectra: a comparison with the electric-field-induced second-harmonic generation technique

Spectrochim Acta A Mol Biomol Spectrosc. 2001 Jun;57(7):1417-26. doi: 10.1016/s1386-1425(00)00483-2.

Abstract

For fluorescent compounds, the combined use of absorption and emission solvatochromic data allows to estimate indirectly the cavity radius of the molecule in solution, a very critical parameter in the application of the solvatochromic method for the determination of the quadratic hyperpolarizability beta of dipolar molecules. For two test compounds, trans-4-[4-(dimethylamino)styryl]pyridine (DASP) and 5-dimethylamino-1,10-phenanthroline (DAPHEN), the beta values so obtained are compared with those obtained by the EFISH (Electric Field Induced Second-Harmonic generation) technique. For DAPHEN, the versatility of the method described in this work in the presence of more than one electronic transition contributing to the non-linear optical response is demonstrated.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Chemistry, Physical / methods*
  • Phenanthrolines / chemistry*
  • Pyridines / chemistry*
  • Spectrometry, Fluorescence
  • Spectrum Analysis / methods*

Substances

  • 4-(4-(dimethylamino)styryl)pyridine
  • 5-dimethylamino-1,10-phenanthroline
  • Phenanthrolines
  • Pyridines