Quenching of the fluorescence of ENCDTTC by aniline and carbon tetrachloride in different organic solvents

Patil, N. R.; Melavanki, Raveendra; Nagaraja, D.; Patil, H D; Sanningannavar, F M; Kapatakar, S.B.

doi:10.1016/j.molliq.2013.01.006

Cited by 20 publications

(11 citation statements)

References 23 publications

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“…Quenching studies can reveal, for example, the diffusion rate of quenchers, localization of fluorophores in proteins and membranes and their accessibilities to quenchers. Because of many such novel applications, fluorescence quenching study has attracted many investigators in the last couple of decades [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. One of the well-known experimental techniques used to study the fluorescence quenching is to determine some of the quenching parameters using Stern-Volmer plots.…”

Section: Introductionmentioning

confidence: 99%

Exploring the mechanism of fluorescence quenching in two biologically active boronic acid derivatives using Stern-Volmer kinetics

Geethanjali

Nagaraja

Melavanki

2015

Journal of Molecular Liquids

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Section: Introductionmentioning

confidence: 99%

Exploring the mechanism of fluorescence quenching in two biologically active boronic acid derivatives using Stern-Volmer kinetics

Geethanjali

Nagaraja

Melavanki

2015

Journal of Molecular Liquids

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“…It was reported [5][6] that ln(K SV ) was linear to 1/T. The measured relationships of F 0 and F to T were found closer to exponential equations than polynomial ones.…”

Section: Exponential Equation (Ee) Methodsmentioning

confidence: 51%

Real-time in-situ simultaneous monitoring of dissolved oxygen and materials movements at vicinities of an aquatic plant by fluorescence quenching/deflection with an improved calculation method

Wu¹,

Huang²,

Desk³

2017

SDRP-JPS

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Recently we developed a novel optical detection system that allowed real-time in-situ simultaneous monitoring of dissolved oxygen and materials movements at a vicinity of micrometers from an aquatic plant by combining deflection of a probe beam and fluorescence quenching. In the detection system, dissolved oxygen (DO)-quenched fluorescence was monitored together with beam deflection signals at the vicinity of the plant, then DO concentration was calculated from the fluorescence intensity. Here, three calculation methods for obtaining DO concentrations from the fluorescence intensity were examined. Results showed that exponential equations method, where fluorescent quenching coefficient and measured fluorescence intensity either with or without DO were approximated with exponential equations of temperature, gave the closest results to the measured ones by a DO sensor. The method was further applied to monitoring of oxygen and materials movement across the aquatic plants surface.

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“…1 − W molecules become excited and interact very robustly with them. The static quenching process is described effectively by many models (e.g., the Somoluchowski model) :

\frac{{normalI}_{0}}{I} = \frac{1 + K_{SV} ([], Q)}{W}

where W varies with the quencher concentration [ Q ] varies, so we can rewrite equation as

\frac{[1 - (\frac{I}{I_{0}})]}{[Q]} = K_{SV} ([], \frac{I}{I_{0}}) + \frac{1 - W}{[Q]}

…”

Section: Theorymentioning

confidence: 99%

Bimolecular fluorescence quenching reactions of the biologically active coumarin composite 2‐acetyl‐3H‐benzo[f]chromen‐3‐one in different solvents

Koppal

Melavanki

Kusanur³

et al. 2018

Luminescence

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A study on fluorescence quenching was carried out for the coumarin derivative 2-acetyl-3H-benzo[f]chromen-3-one (2AHBC) with aniline at room temperature. Efficient fluorescence quenching was observed and Stern-Volmer (S-V) plots showed upward curves from linearity in all solvents of different polarities. For the solute 2AHBC, ground state complex formation does not hold in our study. The kinetic distance (r) value was found to be greater than the encounter distance (R) and indicated that the quenching reaction was held within the sphere of action. Diffusion-limited reactions were found to be more prominent in high polarity solvents, namely dimethyl sulfoxide (DMSO), DMF, ACN, methanol, ethanol, propanol and DCM. The relationships between quenching constant (K ) and dielectric constants (ε) of the different solvents were studied.

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Quenching of the fluorescence of ENCDTTC by aniline and carbon tetrachloride in different organic solvents

Cited by 20 publications

References 23 publications

Exploring the mechanism of fluorescence quenching in two biologically active boronic acid derivatives using Stern-Volmer kinetics

Exploring the mechanism of fluorescence quenching in two biologically active boronic acid derivatives using Stern-Volmer kinetics

Real-time in-situ simultaneous monitoring of dissolved oxygen and materials movements at vicinities of an aquatic plant by fluorescence quenching/deflection with an improved calculation method

Bimolecular fluorescence quenching reactions of the biologically active coumarin composite 2‐acetyl‐3H‐benzo[f]chromen‐3‐one in different solvents

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