scholarly journals Carbazole-Acenaphthene (Donor-Acceptor) based luminophores for picric acid detection: a combined experimental and theoretical study

2021 ◽  
Author(s):  
Aravind Kajjam ◽  
Kasturi Singh ◽  
Varun Tej R V ◽  
Sivakumar Vaidyanathan
Keyword(s):  
Complex Formation ◽  
Fluorescence Quenching ◽  
Theoretical Study ◽  
Picric Acid ◽  
Donor Acceptor

In the present investigation, carbazole-Acenaphthene based Donor-Acceptor luminophores were designed and synthesized. All the luminophores were showing fluorescence quenching behavior towards nitroaromatics through complex formation. All the luminophores were used...

Complex-Formation-Enhanced Fluorescence Quenching Effect for Efficient Detection of Picric Acid

2014 ◽  
Vol 20 (38) ◽  
pp. 12215-12222 ◽  
Author(s):  
Aixiang Ding ◽  
Longmei Yang ◽  
Yuyang Zhang ◽  
Gaobin Zhang ◽  
Lin Kong ◽  
...  
Keyword(s):  
Complex Formation ◽  
Fluorescence Quenching ◽  
Picric Acid ◽  
Enhanced Fluorescence ◽  
Quenching Effect ◽  
Efficient Detection

scholarly journals Examination of 2-Phenoxyaniline Fluorescence Quenching by Chloromethanes

2019 ◽  
Vol 9 (1S3) ◽  
pp. 257-259
Keyword(s):  
Complex Formation ◽  
Fluorescence Quenching ◽  
Electron Affinity ◽  
Rate Constants ◽  
Diffusion Rate ◽  
Solvent Polarity ◽  
Quenching Rate ◽  
Clear Cut ◽  
Donor Acceptor ◽  
Diffusion Rate Constant

The fluorescence quenching of 2-phenoxyaniline (2PAN) by chloromethanes were studied in hexane, dioxane, acetonitrile and methanol. The quenching rate constants (kq) are large with CCl4 and CHCl3 and close to diffusion rate constant (kdiff) and viscosity dependent, where with CH2Cl2 they are less. No clear cut variation of solvent polarity or viscosity is observed for CH2Cl2. Intermediate donor-acceptor complex formation is suggested for CH2Cl2 quenching. kq varies with electron affinity of quenchers suggesting the formation of non-emissive exciplex in quenching.

Formation of CT complexes and electron transfer from excited molecules of anthracene derivatives to methylviologen in aqueous and micellar media

1987 ◽  
Vol 52 (7) ◽  
pp. 1658-1665
Author(s):  
Viktor Řehák ◽  
Jana Boledovičová
Keyword(s):  
Electron Transfer ◽  
Complex Formation ◽  
Fluorescence Quenching ◽  
Rate Constant ◽  
Formation Constants ◽  
Dynamic Quenching ◽  
Micellar Media ◽  
Complex Formation Constants ◽  
Anthracene Derivatives ◽  
Ct Complexes

Disodium 1,5- and 1,8-anthracenedisulphonate (ADS) and 9-acetylanthracene form coloured CT complexes with methylviologen (MV2+) in aqueous and micellar media. The complex formation constants and molar absorptivities were determined by the Benesi-Hildebrandt method. In the fluorescence quenching, its static component plays the major role. The dynamic quenching component is determined by the rate constant of electron transfer from the S1 state of ADS to MV2+.

Theoretical study on the charge transfer mechanism at donor/acceptor interface: Why TTF/TCNQ is inadaptable to photovoltaics?

2016 ◽  
Vol 145 (24) ◽  
pp. 244705 ◽  
Author(s):  
Shuang-Bao Li ◽  
Yun Geng ◽  
Yu-Ai Duan ◽  
Guang-Yan Sun ◽  
Min Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Theoretical Study ◽  
Transfer Mechanism ◽  
Charge Transfer Mechanism ◽  
Donor Acceptor

A donor–acceptor liganded metal–organic framework showcases the hydrogen-bond-enhanced sensing of N-heterocyclic explosives

2021 ◽  
Vol 9 (36) ◽  
pp. 12086-12093
Author(s):  
Junjie Wang ◽  
Yao Cheng ◽  
Jie Zhou ◽  
Weihua Tang
Keyword(s):  
Hydrogen Bond ◽  
Detection Limit ◽  
Fluorescence Quenching ◽  
Metal Organic Framework ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Organic Framework

Zn(ii)-based MOF for detecting FOX-7 like explosives is designed via hydrogen-bond-intensified host–guest interactions. The crystalline MOF achieves 0.14 ppm detection limit and a highest fluorescence quenching constant of 3.22 × 104 M−1.

Fluorescence quenching of triarylamine functionalized phenanthroline-based probe for detection of picric acid

2020 ◽  
Vol 401 ◽  
pp. 112780
Author(s):  
P.A. Parvathy ◽  
R. Dheepika ◽  
R. Abhijnakrishna ◽  
P.K.M. Imran ◽  
S. Nagarajan
Keyword(s):  
Fluorescence Quenching ◽  
Picric Acid

Theoretical Study on the Correlation between Band Gap, Bandwidth, and Oscillator Strength in Fluorene-Based Donor−Acceptor Conjugated Copolymers

2009 ◽  
Vol 113 (24) ◽  
pp. 8268-8277 ◽  
Author(s):  
Ying-Chieh Hung ◽  
Jyh-Chiang Jiang ◽  
Chi-Yang Chao ◽  
Wei-Fang Su ◽  
Shiang-Tai Lin
Keyword(s):  
Band Gap ◽  
Oscillator Strength ◽  
Theoretical Study ◽  
Donor Acceptor ◽  
Conjugated Copolymers
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