Temporary anion states of fluorine substituted benzenes probed by charge transfer in O2−·C6H6−xFx (x = 0–5) ion–molecule complexes

2020 ◽  
Vol 152 (20) ◽  
pp. 204309
Author(s):  
Marissa A. Dobulis ◽  
Michael C. Thompson ◽  
Thomas Sommerfeld ◽  
Caroline Chick Jarrold
Keyword(s):  
Charge Transfer ◽  
Substituted Benzenes ◽  
Ion Molecule Complexes

scholarly journals Charge transfer control by substituents: Donor pyrroles and fluoro-anilines

2005 ◽  
Vol 7 (3) ◽  
pp. 121-124 ◽  
Author(s):  
Antje Neubauer ◽  
Sukumaran Murali ◽  
Wolfgang Rettig
Keyword(s):  
Charge Transfer ◽  
Benzene Ring ◽  
The Other ◽  
Substituted Benzenes ◽  
Other Hand ◽  
Alkane Solvents ◽  
New Compounds ◽  
Derivatives Of ◽  
Acceptor Moiety ◽  
Donor Substituent

Derivatives of N-phenyl pyrrole with a para-donor substituent on the acceptor benzene ring are compared. It is shown that by a suitable increase of the donor strength of the pyrrolo group, CT fluorescence can be achieved even for donor-donor substituted benzenes. On the other hand, introducing fluoro substituents into the acceptor moiety strongly enhances the CT formation tendency, and several new compounds with CT fluorescence even in alkane solvents are presented.

Fluorescence excitation spectroscopy of ionic clusters containing the C6F+6 chromophore

1988 ◽  
Vol 324 (1578) ◽  
pp. 223-232 ◽  
Keyword(s):  
Charge Transfer ◽  
Long Range ◽  
Interaction Potential ◽  
Test Model ◽  
Ionic Clusters ◽  
Excitation Spectra ◽  
Fluorescence Excitation ◽  
Model Potentials ◽  
Fluorescence Excitation Spectra ◽  
Ion Molecule Complexes

Fluorescence excitation spectra of the ion-molecule complexes C 6 F+6•X n (X = He, Ne, Ar or N 2 ) are reported. It is shown that such data can be used to test model potentials for these complexes. For n = 1 and X = He and Ne, a simple long-range model of the interaction potential is nearly adequate, but for X = Ar it appears that a substantial charge-transfer component to the interaction is required.

Quenching of the fluorescence of substituted benzenes by halomethanes

1983 ◽  
Vol 61 (9) ◽  
pp. 1952-1956 ◽  
Author(s):  
H. A. Khwaja ◽  
G. P. Semeluk ◽  
I. Unger
Keyword(s):  
Charge Transfer ◽  
Gas Phase ◽  
Singlet State ◽  
Charge Transfer Complex ◽  
Substituted Benzenes ◽  
Exciplex Formation ◽  
Benzene Toluene ◽  
A Charge ◽  
Klein’S Model ◽  
Protonated Molecules

Rate constants, kq, for the quenching of the singlet state of benzene, toluene, p-xylene, fluorobenzene, trifluoromethyl benzene, p-bis(trifluoromethyl)benzene, and aniline by CCl4, CH3CCl3, CHCl3, and CFCl3, in the gas phase have been determined. In each instance the quenching is via a charge-transfer complex with the aromatic acting as donor. There is a linear dependence between ln kq and IP (ionization potential) of the aromatics which supports Klein's model for exciplex formation. The most effective quencher is CCl4 while the least effective is CFCl3. The most effective donor was aniline while the least effective one was p-bis(trifluoromethyl)benzene. In general, fluorinated aromatics are less effective donors than the corresponding protonated molecules.

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