scholarly journals The Role of Polarizabilities in the Fluorescence Behaviour of 4-cyano-N,N-dimethylaniline

1981 ◽  
Vol 36 (8) ◽  
pp. 868-875 ◽  
Author(s):  
Wolfram Baumann
Keyword(s):  
Dipole Moment ◽  
Electric Field ◽  
External Electric Field ◽  
Ground State ◽  
Permanent Dipole Moment ◽  
Reaction Field

Abstract The effect of an external electric field on the absorption and the double fluorescence of 4-cyano-N,N-dimethylaniline can be understood, taking into account reaction field induced polarizability effects. If a TICT state conformation emits the a-fiuorescence in dioxane, the permanent dipole moment in this state is only slightly larger than in the equilibrium ground state.

Permanent Dipole Moment and Polarizability of a Gass of Merocyanine Dyes in Their Ground and First Excited Singlet State

1983 ◽  
Vol 38 (9) ◽  
pp. 995-1002 ◽  
Author(s):  
Wolfram Baumann
Keyword(s):  
Dipole Moment ◽  
Excited State ◽  
Electric Field ◽  
Field Model ◽  
Singlet State ◽  
Excited Singlet State ◽  
Permanent Dipole Moment ◽  
Excited Singlet ◽  
Reaction Field ◽  
Merocyanine Dyes

Abstract The permanent dipole moment of a class of merocyanine dyes in their ground and first excited singlet state has been determined studying the influence of an external electric field on the absorption of the compounds in various solvents. Evaluation of the experimental results on the basis of the Onsager reaction field model also gives values for the polarizability in the ground and excited state, the latter approaches the value of a respective conducting ellipsoid with the longer chainlength molecules.

scholarly journals Charge trapping and de-trapping in isolated CdSe/ZnS nanocrystals under an external electric field: indirect evidence for a permanent dipole moment

Nanoscale ◽  
2015 ◽  
Vol 7 (36) ◽  
pp. 14897-14905 ◽  
Author(s):  
Huidong Zang ◽  
Mihail Cristea ◽  
Xuan Shen ◽  
Mingzhao Liu ◽  
Fernando Camino ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Electric Field ◽  
External Electric Field ◽  
Indirect Evidence ◽  
Charge Trapping ◽  
Permanent Dipole Moment ◽  
Zns Nanocrystals

Dipole Moments, Polarizabilities and the Fluorescence Behaviour of 4-(9-anthryl)-N,N-dimethylaniline

1979 ◽  
Vol 34 (9) ◽  
pp. 1070-1082 ◽  
Author(s):  
Wolfram Baumann ◽  
F. Petzke ◽  
K.-D. Loosen
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Decay Time ◽  
Fluorescence Spectra ◽  
Dipole Moments ◽  
Absorption And Fluorescence Spectra ◽  
Dependent Effect ◽  
Reaction Field ◽  
Solvent Dependence

Abstract It is shown that the solvent dependence of the fluorescence wavenumber and decay time as well as the solvent dependent effect of an external electric field on the absorption and fluorescence spectra of 4-(9-anthryl)-N,N-dimethylaniline can be fully understood taking into account reaction field induced polarizability effects.

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