Hammett Type Correlations for Intramolecular Charge Transfer (ICT) Dipole Moments of 4’-Substituted 9-Styrylacridines in the Ground State and in the Excited State

Heterocycles ◽  
2001 ◽  
Vol 55 (12) ◽  
pp. 2325 ◽  
Author(s):  
Jean-Pierre Desvergne ◽  
Mohamed El Azami ◽  
Najib Bitit ◽  
Abdelali Kerbal ◽  
Souad Lahlou ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Ground State ◽  
Intramolecular Charge Transfer ◽  
Dipole Moments

Structural Requirements for Intramolecular Charge-Transfer in Excited State of 4-(9-Anthryl)-N,N-dimethylaniline

1982 ◽  
Vol 37 (6) ◽  
pp. 598-606 ◽  
Author(s):  
Aleksander Siemiarczuk ◽  
Jacek Koput ◽  
Andrzej Pohorille
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dipole Moments ◽  
Atomic Charge ◽  
Transfer Model ◽  
Charge Densities ◽  
Singlet States ◽  
Donor And Acceptor ◽  
Electron Donor And Acceptor

Abstract Excited state kinetics and other photophysical features of 4-(9-anthryl)-N,N-dimethylaniline and two model compounds have been thoroughly examined in order to establish the structural conditions for highly polar excited state formation.Also quantum chemical calculations by means of INDO/S CI and PCILO methods have been performed to obtain potential energy curves, dipole moments and atomic charge densities for the ground and lowest excited singlet states as a function of the angle of twist between anthryl and dimethylaniline subunits.Both the experimental and theoretical results confirm the previously proposed TICT (Twisted Intramolecular Charge-Transfer) model predicting the perpendicularity between electron donor and acceptor moieties as a condition for nearly full charge-separation in excited states for some classes of aromatic compounds.

Excited States Dipole Moments and Fluorescence Behaviour of Some Derivatives of Dimethylaminobenzonitrile

1990 ◽  
Vol 45 (7) ◽  
pp. 883-888
Author(s):  
C. Brittinger ◽  
A. K. Maiti ◽  
W. Baumann ◽  
N. Detzer
Keyword(s):  
Dipole Moment ◽  
Excited State ◽  
Charge Transfer ◽  
Excited States ◽  
Intramolecular Charge Transfer ◽  
Dipole Moments ◽  
Solvent Polarity ◽  
Polar Solvents ◽  
Derivatives Of ◽  
Limiting Value

AbstractTwo sterically hindered derivatives of dimethylaminobenzonitrile (DMCA) have been synthesized and the dipole moment of their fluorescent excited state has been determined in differently polar solvents. Its value increases with solvent polarity up to a limiting value of (50 + 2.5) • 10-30 Cm. The results are discussed with reference to the twisted intramolecular charge transfer (TICT) state formation in the class of molecules related to DMCA.

Dynamic adjustment of emission from both singlets and triplets: the role of excited state conformation relaxation and charge transfer in phenothiazine derivates

2021 ◽  
Author(s):  
Weidong Qiu ◽  
Xinyi Cai ◽  
Mengke Li ◽  
Liangying Wang ◽  
Yanmei He ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dynamic Adjustment ◽  
Twisted Intramolecular Charge Transfer

Dynamic adjustment of emission behaviours by controlling the extent of twisted intramolecular charge transfer character in excited state.

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