Highly sensitive fluorescence turn-OFF and reversible chemical sensor for Hg2+ ion based on pyrene appended 2-thiohydantoin

Gawas, Pratiksha P.; Selvaraj, Kasthuri; Pamanji, Rajesh; Selvin, Joseph; Nutalapati, Venkatramaiah

doi:10.1016/j.chemosphere.2024.141470

Chemosphere

2024

DOI: 10.1016/j.chemosphere.2024.141470

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Highly sensitive fluorescence turn-OFF and reversible chemical sensor for Hg2+ ion based on pyrene appended 2-thiohydantoin

Pratiksha P. Gawas,

Kasthuri Selvaraj,

Rajesh Pamanji

et al.

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2024

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Cited by 3 publications

References 39 publications

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Dual-modal biosensor for mercuric ion detection based on Cu2O@Cu2S/D-TA COF heterojunction with excellent catalase-like, electrochemical and photoelectrochemical properties

Yang,

Niu,

Duan

et al. 2024

Biosensors and Bioelectronics

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Dual-modal biosensor for mercuric ion detection based on Cu2O@Cu2S/D-TA COF heterojunction with excellent catalase-like, electrochemical and photoelectrochemical properties

Yang,

Niu,

Duan

et al. 2024

Biosensors and Bioelectronics

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Tailored coordination chemistry: A novel Zn(II)-fluorescent coordination material for highly selective and sensitive detection of Hg2+ ions in aqueous environments

Shahnawaz Khan,

Kamal,

Zulkiflain

et al. 2024

Journal of Molecular Liquids

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Two-Dimensional Triazine Polymers as Recyclable Fluorescent Sensors to Detect and Remove Sub-nanomolar Hg(II) From Water

Salahvarzi,

Adeli,

Mehdipour

et al. 2024

ACS Appl. Polym. Mater.

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In this work, full triazine two-dimensional frameworks (2DC 3 N 3 ) were synthesized and used to detect metal ions in aqueous solutions. 2DC 3 N 3 showed excellent performance to sense Hg(II) with high selectivity (>96%) and was designed as a recyclable sensor for Hg(II) detection. 2DC 3 N 3 was synthesized using catalyst-free [2+2+2] cyclotrimerization of sodium cyanide and cyanuric chloride at ambient conditions. The as-prepared 2DC 3 N 3 sheets with several hundred micrometers lateral size exhibited strong excitation-dependent fluorescence with 63% quantum yield and maximum emission at 428 nm. The emission of 2DC 3 N 3 decreased with 14.74 × 10 3 L•mol −1 quenching constant (K SV ) upon interaction with Hg 2+ ions. This effect was used as a strong signal to detect Hg(II) with a 0.98 nM detection limit. The high Hg 2+ removal capacity of 2DC 3 N 3 was attributed to cooperative interactions of nitrogen atoms of 2DC 3 N 3 pores and Hg 2+ , as suggested by computational studies. Taking advantage of the straightforward synthesis of 2DC 3 N 3 and its selectivity, it can be used as an efficient platform for monitoring Hg 2+ in waste and drinking water.

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Highly sensitive fluorescence turn-OFF and reversible chemical sensor for Hg2+ ion based on pyrene appended 2-thiohydantoin

Cited by 3 publications

References 39 publications

Dual-modal biosensor for mercuric ion detection based on Cu2O@Cu2S/D-TA COF heterojunction with excellent catalase-like, electrochemical and photoelectrochemical properties

Dual-modal biosensor for mercuric ion detection based on Cu2O@Cu2S/D-TA COF heterojunction with excellent catalase-like, electrochemical and photoelectrochemical properties

Tailored coordination chemistry: A novel Zn(II)-fluorescent coordination material for highly selective and sensitive detection of Hg2+ ions in aqueous environments

Two-Dimensional Triazine Polymers as Recyclable Fluorescent Sensors to Detect and Remove Sub-nanomolar Hg(II) From Water

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