Twisted Intramolecular Charge Transfer States in 2-Arylbenzotriazoles:  Fluorescence Deactivation via Intramolecular Electron Transfer Rather Than Proton Transfer

2002 ◽  
Vol 106 (34) ◽  
pp. 7680-7689 ◽  
Author(s):  
Ashok Maliakal ◽  
George Lem ◽  
Nicholas J. Turro ◽  
Ravi Ravichandran ◽  
Joseph C. Suhadolnik ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Proton Transfer ◽  
Intramolecular Charge Transfer ◽  
Intramolecular Electron Transfer ◽  
Twisted Intramolecular Charge Transfer

Excitation-Wavelength-Dependent Light-Induced Electron Transfer and Twisted Intramolecular Charge Transfer in N,N-Bis(4′-tert-butylbiphenyl-4-yl)aniline Functionalized Borondipyrromethenes

2020 ◽  
Vol 124 (47) ◽  
pp. 9738-9750
Author(s):  
Suneel Gangada ◽  
Ramya Athira Ramnagar ◽  
Akanksha Ashok Sangolkar ◽  
Ravinder Pawar ◽  
Jagadeesh Babu Nanubolu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Excitation Wavelength ◽  
Twisted Intramolecular Charge Transfer

scholarly journals Recent advances in twisted intramolecular charge transfer (TICT) fluorescence and related phenomena in materials chemistry

2016 ◽  
Vol 4 (14) ◽  
pp. 2731-2743 ◽  
Author(s):  
Shunsuke Sasaki ◽  
Gregor P. C. Drummen ◽  
Gen-ichi Konishi
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Transfer Process ◽  
Intramolecular Charge Transfer ◽  
Materials Chemistry ◽  
Single Bond ◽  
Electron Transfer Process ◽  
Twisted Intramolecular Charge Transfer ◽  
Recent Advances ◽  
Donor And Acceptor

Twisted intramolecular charge transfer (TICT) is an electron transfer process that occurs upon photoexcitation in molecules that usually consist of a donor and acceptor part linked by a single bond.

EXCITED-STATE INTRAMOLECULAR ELECTRON TRANSFER COUPLED WITH EXCITED-STATE INTRAMOLECULAR PROTON TRANSFER IN PHOTOINDUCED ENOL TO KETO TAUTOMERIZATION

2009 ◽  
Vol 08 (supp01) ◽  
pp. 1073-1086
Author(s):  
YUANZUO LI ◽  
SHASHA LIU ◽  
LILI ZHAO ◽  
MAODU CHEN ◽  
FENGCAI MA ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Charge Transfer ◽  
Proton Transfer ◽  
Molecular Orbital ◽  
Energy Levels ◽  
Three Dimensional ◽  
Intramolecular Proton Transfer ◽  
Intramolecular Electron Transfer ◽  
Lowest Unoccupied Molecular Orbital

In this paper, the two-dimensional (2D) site and the three-dimensional (3D) cube representations [Sun MT, J Chem Phys124: 054903, 2006] have been further developed to study the charge transfer during excited-state relaxation. With these newly developed representations, we theoretically investigate the excited-state intramolecular electron transfer (ESIET) in enol excited-state geometry relaxation, and ESIET coupled with excited-state intramolecular proton transfer (ESIPT) in phototautomerization (in enol to keto transformation). The energy levels of highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of HBODC in enol and keto absorption and fluorescence are compared to understand photoinduced ESIET and ESIPT process. The excited regions of molecule (where arrangement of electron density takes place during excited-state relaxation) are located with 2D site representation. 3D cube representations visualize the character of charge transfer (CT) in those regions. Results of the research indicate that the ability of charge transfer during enol excited-state geometry relaxation is much stronger than that in phototautomerization.

Theoretical study on the sensing mechanism of chalcone-based fluorescence probe for detecting hydrogen sulfide and biothiols

2021 ◽  
Author(s):  
Yunjian Cao ◽  
Lingling Wang ◽  
Ziqi Liu ◽  
Chaofan Sun ◽  
Yuanzuo Li
Keyword(s):  
Hydrogen Sulfide ◽  
Excited State ◽  
Charge Transfer ◽  
Proton Transfer ◽  
Fluorescent Probe ◽  
Theoretical Study ◽  
Fluorescence Probe ◽  
Intramolecular Charge Transfer ◽  
Intramolecular Proton Transfer ◽  
Twisted Intramolecular Charge Transfer

A fluorescent probe 2′-(2,4-dinitro-phenoxy)-4-(dimethylamino) chalcone (Pr1, Spectrochim. Acta, Part A 2021, 244, 118839)based on the twisted intramolecular charge transfer (TICT) and excited state intramolecular proton transfer (ESIPT) was designed and...

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