A novel fluorometric measurement system based on triple complex for mercury (II) determination

Toksöz, Yavuz Selim; Özyiğit, İbrahim Ethem; Bilen, Çiğdem; Arsu, Nergis; Karakuş, Emine

doi:10.1016/j.saa.2020.119232

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2022

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“…Compared with the current major fluorophores, such as quantum dots [47][48][49], noble metal clusters [50,51], organic fluorescent agents [52,53], PC is nontoxic, easy to obtain and simple to prepare. Besides, PC has wide excitation spectrum, high molar extinction coefficient and high fluorescence quantum yield [35].…”

Section: Introductionmentioning

confidence: 99%

Construction of fluorescent logic gates for the detection of mercury(II) and ciprofloxacin based on phycocyanin

Dong¹,

Girmatsion²,

Wang³

et al. 2022

Methods Appl. Fluoresc.

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Chemical pollutants such as heavy metals and antibiotics in the environment pose a huge threat to humans and animals. Our studies have demonstrated that the fluorescence of phycocyanin showed quenching responses towards both mercury (Hg2+) and ciprofloxacin (CIP), which acted in accordance with the “OR” molecular logic gate. In order to discriminate Hg2+ and CIP in application scenarios, cysteine (Cys) was utilized to design another “INHIBIT” logic gate, in which Hg2+ and Cys were the two inputs. Thus, an intelligent biosensor with dual-target identification capacity was successfully developed by using a fluorescent natural protein in an ingenious logic gate system.

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