Substituent Effects on Twisted Internal Charge Transfer Excited States of N-Borylated Carbazoles and (Diphenylamino)boranes

2012 ◽  
Vol 116 (4) ◽  
pp. 1151-1158 ◽  
Author(s):  
Jian Wang ◽  
Ying Wang ◽  
Takuhiro Taniguchi ◽  
Shigehiro Yamaguchi ◽  
Stephan Irle
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Substituent Effects ◽  
Internal Charge Transfer ◽  
Internal Charge

Anomalous Inhomogeneous Broadening of Electronic Spectra of Molecules with Internal Charge Transfer

2003 ◽  
Vol 58 (9-10) ◽  
pp. 529-536 ◽  
Author(s):  
V. I. Tomin ◽  
K. Hubisz ◽  
Z. Mudryka
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Electronic Spectra ◽  
Inhomogeneous Broadening ◽  
Electronic Transitions ◽  
Polar Solvents ◽  
Internal Charge Transfer ◽  
Internal Charge

Excited states with internal charge transfer of some molecules show an anomalously strong inhomogeneous broadening of their electronic spectra. Here such an inhomogeneous broadening for N, N-dimethylaminobenzonithrile (DMABN) was studied. The spectral inhomogeneity for DMABN in some polar solvents reaches 140 - 150 nm.The interpretation of the obtained results is based on treating a solution as a set of chemically identical solvates with a luminophor molecule in the centre, having different energies of the pure electronic transitions. The inhomogeneity arises due to an intermolecular effect of the luminophors environment on its spectra in polar solvents, as well as a process of intramolecular movement of the twisting fragments relative to the main moiety of DMABN.

A benzothiazole-based fluorescence turn-on sensor for copper(II)

2021 ◽  
Author(s):  
Gyeongjin Kim ◽  
Donghwan Choi ◽  
Cheal Kim
Keyword(s):  
Charge Transfer ◽  
Limit Of Detection ◽  
Theoretical Calculations ◽  
Enhanced Fluorescence ◽  
Turn On ◽  
Fluorescent Response ◽  
Chelation Enhanced Fluorescence ◽  
Fluorescence Turn On ◽  
Internal Charge Transfer ◽  
Internal Charge

Abstract A new benzothiazole-based chemosensor BTN (1-((Z)-(((E)-3-methylbenzo[d]thiazol-2(3H)-ylidene)hydrazono)methyl)naphthalen-2-ol) was synthesized for the detection of Cu2+. BTN could detect Cu2+ with “off-on” fluorescent response from colorless to yellow irrespective of presence of other cations. Limit of detection for Cu2+ was determined to be 3.3 µM. Binding ratio of BTN and Cu2+ turned out to be a 1:1 with the analysis of Job plot and ESI-MS. Sensing feature of Cu2+ by BTN was explained with theoretical calculations, which might be owing to internal charge transfer and chelation-enhanced fluorescence processes.

A molecular tailoring approach – a new guide to quantify the energy of push–pull effects: a case study on (E)-3-(1H-pyrrol-2-yl)prop-2-enones

2020 ◽  
Vol 22 (39) ◽  
pp. 22190-22194
Author(s):  
Andrei V. Afonin ◽  
Danuta Rusinska-Roszak
Keyword(s):  
Charge Transfer ◽  
New Approach ◽  
Internal Charge Transfer ◽  
Internal Charge ◽  
Molecular Tailoring

We report a new approach to quantify the push–pull effect in molecules with internal charge transfer.

Structural modulation of internal charge transfer in small molecular donors for organic solar cells

2012 ◽  
Vol 48 (71) ◽  
pp. 8907 ◽  
Author(s):  
Antoine Leliège ◽  
Charles-Henri Le Régent ◽  
Magali Allain ◽  
Philippe Blanchard ◽  
Jean Roncali
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Organic Solar Cells ◽  
Structural Modulation ◽  
Internal Charge Transfer ◽  
Internal Charge
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