Effect of heavy metals on dynamic and static quenching of the fluorescence of the host-guest inclusion complex methyl-β-cyclodextrin by 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline in aqueous media

Umit Ay

Effect of heavy metals on dynamic and static quenching of the fluorescence of the host-guest inclusion complex methyl-β-cyclodextrin by 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline in aqueous media

Umit Ay

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Abstract

An inclusion complex was formed with methyl-β-cyclodextrin (Me-β-CD) and the smallest unit of the macrocyclic family of bathocuproine[Ed1], 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline. With this newly formed fluorescent probe, the quenching effect of heavy metals was investigated. Spectral characterization of the complex was performed by UV-visible and fluorescence spectroscopy techniques. The complex formation constant (K_b), Gibbs free energy (ΔG⁰ ) and approximate quenching activation energy (E_a) values were calculated. Lifetime (τ), bimolecular quenching rate constant (k_q) values, and diffusion rate constant (k_d) calculations were made, and the mechanism of quenching by the effect of heavy metals was clarified.

Keywords

inclusion complex, transition metals, quenching mechanism, fluorescence lifetime, bathocuproine

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For citations:

Ay U. Effect of heavy metals on dynamic and static quenching of the fluorescence of the host-guest inclusion complex methyl-β-cyclodextrin by 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline in aqueous media. Zhurnal Prikladnoii Spektroskopii. 2021;88(4):661-670.

ISSN 0514-7506 (Print)

Zhurnal Prikladnoii Spektroskopii

Effect of heavy metals on dynamic and static quenching of the fluorescence of the host-guest inclusion complex methyl-β-cyclodextrin by 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline in aqueous media

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Abstract

Keywords

About the Author

References

Review

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Zhurnal Prikladnoii Spektroskopii

Effect of heavy metals on dynamic and static quenching of the fluorescence of the host-guest inclusion complex methyl-β-cyclodextrin by 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline in aqueous media

Full Text:

Abstract

Keywords

About the Author

References

Review

For citations:

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