Twisted internal charge transfer fluorescence of para-N,N-dimethylaminobenzonitrile in rigid matrix at room temperature

1983 ◽  
Vol 98 (5) ◽  
pp. 511-514 ◽  
Author(s):  
C. Cazeau-Dubroca ◽  
A. Peirigua ◽  
S.Ait Lyazidi ◽  
G. Nouchi
Keyword(s):  
Charge Transfer ◽  
Room Temperature ◽  
Internal Charge Transfer ◽  
Rigid Matrix ◽  
Internal Charge

Can Twisted Internal Charge-Transfer(TICT)State be Formed in Rigid Polymers?

1995 ◽  
Vol 50 (10) ◽  
pp. 949-952 ◽  
Author(s):  
A. Kawski ◽  
G. Piszczek ◽  
B. Kukliński
Keyword(s):  
Charge Transfer ◽  
Polyvinyl Alcohol ◽  
Emission Band ◽  
Room Temperature ◽  
Intramolecular Charge Transfer ◽  
Rotational Relaxation ◽  
Emission Anisotropy ◽  
Internal Charge Transfer ◽  
Anisotropy Spectra ◽  
Internal Charge

Abstract Absorption, emission and emission anisotropy spectra of 4-cyano-N,N-dimethylaniline (CDMA) and 4-cyano-2,6,N,N-tetramethylaniline (CTMA) were investigated in polyvinyl alcohol) (PVA) films. It was found that the CDMA and CTMA molecules in PVA films at room temperature display phosphorescence, the emission band of which overlaps with the longwave fluorescence band a. The low value of the emission anisotropy shows that in the rigid PVA matrix there are microscopic defects in the form of empty spaces in which a certain fraction of the CDMA or CTMA molecules can attain twisted intramolecular charge-transfer states (TICT) due to rotational relaxation. The emission anisotropies in the shortwave, b, and longwave, a, fluorescence bands of CDMA in propylene glycol were found to be distinctly different, this indicating that the directions of the transition moments are not parallel.

scholarly journals Ultrafast synthesis of near-zero-cost S-doped Ni(OH)2 on C3N5 under ambient conditions with enhanced photocatalytic activity

RSC Advances ◽  
2021 ◽  
Vol 11 (57) ◽  
pp. 36166-36173
Author(s):  
Lixiao Han ◽  
Cong Peng ◽  
Jinming Huang ◽  
Shengyao Wang ◽  
Xiaohu Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Room Temperature ◽  
Transfer Efficiency ◽  
Ambient Conditions ◽  
Highly Efficient ◽  
Internal Charge Transfer ◽  
Internal Charge

2D S–Ni(OH)2 is facially planted on 2D C3N5 at room temperature in 30 minutes via a reaction between Ni(NO3)2 and Na2S in aqueous solution. Due to quick internal charge transfer efficiency, the hybrid is highly efficient for photocatalytic H2 production.

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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