A selective fluorescence probe for gatifloxacin based on the fluorescence quenching of bovine serum albumin capped ZnS nanoparticles

Li, Li; Cheng, Yu; Ding, Yaping; Zhang, Fenfen; Gu, Shuqing

doi:10.1016/j.matchemphys.2012.12.004

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…After the interaction with Hg 2 + , the HR-MS mass was recorded for further authentifaication, the calculated mass is 817.2026 and obtained mass is 817.2024 (Figure S8). The fluorescence quenching constant was calculated using Stern-Volmer plot, [41] and estimated quenching constant (K sv ) of S5-Hg 2 + complex was found to be 2.71 × 10 5 M À 1 . It revealed the high quenching efficiency and high selectivity of S5 towards Hg 2 + ions in the semi-aqueous medium.…”

Section: Uv-vis and Fluorescence Spectral Titration Studymentioning

confidence: 99%

Thiocarbohydrazide based Schiff Base as a Selective Colorimetric and Fluorescent Chemosensor for Hg²⁺ with “Turn‐Off” Fluorescence Responses

Bhaskar

Sarveswari

2020

ChemistrySelect

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An efficient thiocarbohydrazide based fluorescencesensor S5 for the selective detection of Hg 2 + in semi-aqueous medium has been successfully designed and synthesized. The absorption (UV-Vis) and emission (fluorescence) properties of S5 were studied in various solvents. The sensor S5 displayed no distinct changes in absorption with various solvents; however some remarkable changes were noticed in fluorescence studies. Solvent dependent spectral characterization of S5 was explored via the Lippert-Mataga plot. UV-Vis and fluorescence studies also revealed that the sensor S5 could selectively detect Hg 2 + ion over the other tested metal ions. The interaction of S5 with Hg 2 + leads to colour change from colourless to yellow. The observed quenching in fluorescence intensity may be due to chelation enhanced fluorescence quenching (CHEQ). The sensing mechanism was arrived through DFT and 1 H NMR titration studies. The limit of detection was found to be 1.26 nM with a wide pH range of 4-10. Moreover, sensor S5 could demonstrate sensing efficiency for lower concentrations of Hg 2 + in real sample analysis. Its performance, as a test strip and in analysis of various water samples conferred its superior selectivity. Experimental Details Materials and InstrumentsUV-Vis absorption studies were carried out using the Jasco-V700 spectrophotometer. Fluorescence studies were performed with the Hitachi-V7000 spectrofluorometer. 1 H, 13 C NMR and HR-MS were recorded in Bruker Advance Varian 400 and JEOL GC Mate-II mass spectrometer repectively. Fluorescence lifetime spectra and pH measurement were performed using HORIBA Jobin Yvon. ELICO LI120 pH meter respectively. Solvents and reagents were sourced from Sigma-Aldrich and Merck Chemicals, India. The test solutions of various cations was prepared using the nitrate salts of

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Section: Uv-vis and Fluorescence Spectral Titration Studymentioning

confidence: 99%

Thiocarbohydrazide based Schiff Base as a Selective Colorimetric and Fluorescent Chemosensor for Hg²⁺ with “Turn‐Off” Fluorescence Responses

Bhaskar

Sarveswari

2020

ChemistrySelect

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“…4 (b). A corrected Stern-Volmer plot [41][42] was constructed for response toward Cu 2+ . Linear relation was obtained in the range of 0.45-3.6µM (R=0.9961) and shown in Fig.4 (c).…”

Section: Study the Interaction Of Dpbt And Cu 2+mentioning

confidence: 99%

A simple Schiff base fluorescence probe for highly sensitive and selective detection of Hg2+and Cu2+

Zhang

Gao

Zhang

et al. 2016

Talanta

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A ratiometric fluorescent probe for the determination of quinolone antibiotics in milk based on N and S co-doped carbon quantum dots

Wang,

Li,

Zhang

et al. 2025

Food Control

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A selective fluorescence probe for gatifloxacin based on the fluorescence quenching of bovine serum albumin capped ZnS nanoparticles

Cited by 5 publications

References 33 publications

Thiocarbohydrazide based Schiff Base as a Selective Colorimetric and Fluorescent Chemosensor for Hg²⁺ with “Turn‐Off” Fluorescence Responses

Thiocarbohydrazide based Schiff Base as a Selective Colorimetric and Fluorescent Chemosensor for Hg²⁺ with “Turn‐Off” Fluorescence Responses

A simple Schiff base fluorescence probe for highly sensitive and selective detection of Hg2+and Cu2+

A ratiometric fluorescent probe for the determination of quinolone antibiotics in milk based on N and S co-doped carbon quantum dots

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A selective fluorescence probe for gatifloxacin based on the fluorescence quenching of bovine serum albumin capped ZnS nanoparticles

Cited by 5 publications

References 33 publications

Thiocarbohydrazide based Schiff Base as a Selective Colorimetric and Fluorescent Chemosensor for Hg2+ with “Turn‐Off” Fluorescence Responses

Thiocarbohydrazide based Schiff Base as a Selective Colorimetric and Fluorescent Chemosensor for Hg2+ with “Turn‐Off” Fluorescence Responses

A simple Schiff base fluorescence probe for highly sensitive and selective detection of Hg2+and Cu2+

A ratiometric fluorescent probe for the determination of quinolone antibiotics in milk based on N and S co-doped carbon quantum dots

Contact Info

Product

Resources

About

Thiocarbohydrazide based Schiff Base as a Selective Colorimetric and Fluorescent Chemosensor for Hg²⁺ with “Turn‐Off” Fluorescence Responses

Thiocarbohydrazide based Schiff Base as a Selective Colorimetric and Fluorescent Chemosensor for Hg²⁺ with “Turn‐Off” Fluorescence Responses