Abstract
The effect of an external electric field on the fluorescence of molecules in the gas phase as well as in solutions is studied and the permanent dipole moments of 9-cyanoanthracene and 2,6-N,N-tetramethyl-4-cyanoaniline (TMCA) in their fluorescent states have been determined from such investigations. By comparison of the gas-phase and liquid-phase dipole moments, it could be shown that the Onsager model is adequate to describe the effective electric field, and the polarizability density related to the molecular volume could be determined. The values of the gas-phase and of the solution effective dipole moments of TMCA oppose the solute-solvent exciplex model and favour an emitting internal charge-transfer state.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
