Substituent Effect on the Dual Fluorescence of Benzanilides andN-Methylbenzanilides in Cyclohexane. Direct Evidence for Intramolecular Charge Transfer

2002 ◽  
Vol 106 (23) ◽  
pp. 5577-5581 ◽  
Author(s):  
Xuan Zhang ◽  
Xiang-Ying Sun ◽  
Chao-Jie Wang ◽  
Yun-Bao Jiang
Keyword(s):  
Charge Transfer ◽  
Substituent Effect ◽  
Direct Evidence ◽  
Intramolecular Charge Transfer ◽  
Dual Fluorescence

A THEORETICAL STUDY ON DUAL FLUORESCENCE OF 4-DIMETHYLAMINOPYRIDINE BY POLARIZABLE CONTINUUM MODEL

2008 ◽  
Vol 07 (04) ◽  
pp. 821-832 ◽  
Author(s):  
JUAN-QIN LI ◽  
XIANG-YUAN LI ◽  
FENG WANG
Keyword(s):  
Charge Transfer ◽  
Density Functional ◽  
Intramolecular Charge Transfer ◽  
Emission Spectra ◽  
Polarizable Continuum Model ◽  
Transfer Model ◽  
Dual Fluorescence ◽  
Field Methods ◽  
Complete Active Space ◽  
Self Consistent Field

Dual fluorescence spectra of 4-dimethylaminopyridine (DMAP) is investigated using time-dependent density functional theory and complete active space self-consistent field methods. Electronic absorption and emission spectra of DMAP have been investigated in three solvents, that is, cyclohexane, chloroform, and acetonitrile. The present study reveals that the dual fluorescence phenomena of DMAP appear in the cases of acetonitrile and chloroform, but not in cyclohexane. The electronic structures of the ground state and the intramolecular charge transfer states are, therefore, studied in order to reveal the insight of dual fluorescence. Our theoretical results suggest that the twisting of dimethylamino moiety in DMAP is necessary for the intramolecular charge transfer. The mechanism of the dual fluorescence of DMAP is discussed based on the twisted intramolecular charge transfer model and the dual fluorescence phenomenon is explained theoretically.

scholarly journals Intramolecular charge transfer in aminobenzonitriles: Requirements for dual fluorescence

1993 ◽  
Vol 65 (8) ◽  
pp. 1745-1750 ◽  
Author(s):  
K. A. Zachariasse ◽  
T. von der Haar ◽  
Axel Hebecker ◽  
Uwe Leinhos ◽  
Wolfgang Kuhnle
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dual Fluorescence

Solvatochromic and quantum chemical investigations of newly synthesized succinimides: substituent effect on intramolecular charge transfer

2013 ◽  
Vol 144 (10) ◽  
pp. 1525-1535 ◽  
Author(s):  
Nebojša Banjac ◽  
Nemanja Trišović ◽  
Željko Vitnik ◽  
Vesna Vitnik ◽  
Nataša Valentić ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Quantum Chemical ◽  
Substituent Effect ◽  
Intramolecular Charge Transfer

Pyrrolo[2,3-b]quinoxaline with 2-(2-aminoethyl)pyridine chain highly selective fluorescent receptor for Zn2+ exhibiting a dual fluorescence and AIEE in crystalline state

CrystEngComm ◽  
2015 ◽  
Vol 17 (3) ◽  
pp. 498-502 ◽  
Author(s):  
Katarzyna Ostrowska ◽  
Łukasz Dudek ◽  
Jarosław Grolik ◽  
Marlena Gryl ◽  
Katarzyna Stadnicka
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Crystalline State ◽  
Intramolecular Charge Transfer ◽  
Zinc Ion ◽  
Dual Fluorescence ◽  
Aggregation Induced Emission ◽  
Emission Enhancement

The article describes the synthesis of selective dual emissive intramolecular charge transfer (ICT) receptor for zinc ion in acetonitrile, exhibiting aggregation induced emission enhancement (AIEE) in solid state.

Direct evidence of solvent polarity governing the intramolecular charge and energy transfer: ultrafast relaxation dynamics of push–pull fluorene derivatives

2019 ◽  
Vol 21 (21) ◽  
pp. 11087-11102 ◽  
Author(s):  
Afeefah U. Neelambra ◽  
Chinju Govind ◽  
Tessy T. Devassia ◽  
Guruprasad M. Somashekharappa ◽  
Venugopal Karunakaran
Keyword(s):  
Energy Transfer ◽  
Charge Transfer ◽  
Emission Spectroscopy ◽  
Direct Evidence ◽  
Transient Absorption ◽  
Intramolecular Charge Transfer ◽  
Solvent Polarity ◽  
Relaxation Dynamics ◽  
Ultrafast Relaxation ◽  
Absorption And Emission Spectroscopy

The occurrence of intramolecular charge transfer along with energy transfer controlled by the polarity of solvent is revealed by femtosecond and nanosecond transient absorption and emission spectroscopy.

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