Kinetics of intramolecular charge-transfer processes in .omega.-phenyl-.alpha.-(N,N-dimethylamino)alkanes in polar solvents

1981 ◽  
Vol 85 (21) ◽  
pp. 3198-3205 ◽  
Author(s):  
M. Van der Auweraer ◽  
A. Gilbert ◽  
F. C. De Schryver
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Polar Solvents ◽  
Transfer Processes ◽  
Kinetics Of

Picosecond dynamics of intramolecular charge-transfer processes of β-substituted porphyrins adsorbed on the porous glass

1997 ◽  
Vol 269 (3-4) ◽  
pp. 274-280
Author(s):  
Shoji Kotani ◽  
Hiroshi Miyasaka ◽  
Akira Itaya ◽  
Yasushi Hamanaka ◽  
Noboru Mataga ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Porous Glass ◽  
Intramolecular Charge Transfer ◽  
Transfer Processes

scholarly journals Combined Theoretical and Experimental Study on Intramolecular Charge Transfer Processes in Star-Shaped Conjugated Molecules

2019 ◽  
Vol 123 (17) ◽  
pp. 11179-11188 ◽  
Author(s):  
Mónica Moral ◽  
Juan Tolosa ◽  
Jesús Canales-Vázquez ◽  
Juan Carlos Sancho-García ◽  
Andrés Garzón-Ruiz ◽  
...  
Keyword(s):  
Experimental Study ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Conjugated Molecules ◽  
Transfer Processes

Spectroscopic Studies of Dimethylamino Derivatives of Fluorene

2000 ◽  
Vol 55 (11-12) ◽  
pp. 902-908 ◽  
Author(s):  
J. Heldt ◽  
J. R. Heldt ◽  
T. Redzimski ◽  
H. Diehl ◽  
P. Schultz
Keyword(s):  
Dipole Moment ◽  
Excited State ◽  
Charge Transfer ◽  
Fluorescence Spectra ◽  
Intramolecular Charge Transfer ◽  
Stokes Shift ◽  
Spectroscopic Studies ◽  
Polar Solvents ◽  
Derivatives Of ◽  
Transfer State

Abstract 2-dimethylamino-9-fluorenol and 2-dimethylamino-9(4'dimethylamino)phenyl-9-fiuorenol in polar solvents in the excited state undergo conformation changes in which two fluorescent isomers are created. The isomers (in the local excited (LE) and charge transfer (CT) configuration) possess separate fluorescence bands, one appearing from the S1 (LE) state and the second from the intramolecular charge transfer state S1 (CT) of the neutral, aromatic molecule. Both bands show a solvatochromic effect. Using the method of the solvent induced Stokes shift of the absorption and fluorescence spectra the permanent dipole moment of the excited state of fluorene and its two derivatives have been determined. The dipole moment of the ground state and the Onsager cavity radius of the studied molecules were calculated with the Auestion Model 1 (AM1) program.

scholarly journals Crystal Structures and Optical Properties of Two Novel 1,3,5-Trisubstituted Pyrazoline Derivatives

Crystals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 467
Author(s):  
Qi Feng ◽  
Wenhui Huan ◽  
Jiali Wang ◽  
Jiadan Lu ◽  
Guowang Diao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Solid State ◽  
Physical Properties ◽  
Intramolecular Charge Transfer ◽  
Solvent Polarity ◽  
Dihedral Angles ◽  
Polar Solvents ◽  
X Ray ◽  
X Ray Crystallography

Two novel 1,3,5-trisubstituted pyrazoline derivatives—1-acetyl-3-(4-methoxyphenyl)-5-(6-methoxy-2-naphthyl)-pyrazoline (2a) and 1-(4-nitrophenyl)-3-(4-methoxyphenyl)-5-(6-methoxy-2-naphtyl)-pyrazoline (2b)—were synthesized and their structures were determined by single crystal X-ray crystallography. Both of the two crystals exhibit twisted structures due to the large dihedral angles between the pyrazolinyl ring and the aromatic ring at the 5-position (88.09° for 2a and 71.26° for 2b). The optical–physical properties of the two compounds were investigated. The fluorescent emission of 2b arises from the 1,3-disubstituted pyrazoline chromophores and exhibits a red shift in polar solvents and solid-state, which could be attributed to photo-induced intramolecular charge transfer (ICT) from N1 to C3 in the pyrazoline moiety and the intermolecular interactions within the crystal. The fluorescent emissions of 2a (λmax 358–364 nm) in solvents and solid-state both come from 6-methoxy-2-naphthyl chromophores, which are fairly insensitive to the solvent polarity.

Design and synthesis of BODIPY-clickate based Hg2+ sensors: the effect of triazole binding mode with Hg2+ on signal transduction

2016 ◽  
Vol 45 (6) ◽  
pp. 2700-2708 ◽  
Author(s):  
Mani Vedamalai ◽  
Dhaval Kedaria ◽  
Rajesh Vasita ◽  
Shigeki Mori ◽  
Iti Gupta
Keyword(s):  
Signal Transduction ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Binding Mode ◽  
Mercury Ion ◽  
Ion Binding ◽  
Design And Synthesis ◽  
Transfer Processes ◽  
Stokes Shifts ◽  
Mercury Sensing

Highly selective BODIPY-clickates for mercury sensing are reported. These BODIPY clickates exhibits emission in red region with unprecedented large Stokes shifts (116 and 154 nm) upon mercury ion binding due to the intramolecular charge transfer processes.

Two and three input molecular logic operations mediated by a novel azo-azomethine based chromogenic probe through intramolecular charge transfer processes

2015 ◽  
Vol 39 (3) ◽  
pp. 2081-2089 ◽  
Author(s):  
Khatereh Rezaeian ◽  
Hamid Khanmohammadi
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Logic Circuits ◽  
Transfer Processes ◽  
Molecular Logic ◽  
Logic Operations

A novel azo-azomethine based chromogenic receptor has been successfully designed and synthesized for the construction of multifunctional molecular logic circuits.

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