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Highly Sensitive Dansyl-Based Chemosensor for Detection of Cu2+ in Aqueous Solution and Zebrafish.

ABSTRACT: A new dansyl-based chemosensor (2-(4-((5-(dimethylamino)naphthalen-1-yl)sulfonyl)piperazin-1-yl)-N-(quinolin-8-yl)acetamide) (DC) for detecting Cu2+ was synthesized and characterized. DC showed great selectivity to Cu2+ by a fluorescent "on-off" detection method. Job plot, ESI-mass spectroscopy, and 1H NMR titration suggested a 1 to 1 binding mode between DC and Cu2+. The detection limit was determined to be 43 nM, which is greatly below the WHO guidelines. In addition, DC can be applied to real samples and zebrafish imaging. The fluorescence quenching mechanism was proposed as the enhancement of intramolecular charge transfer with calculations.

SUBMITTER: Chae JB 

PROVIDER: S-EPMC6682132 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Highly Sensitive Dansyl-Based Chemosensor for Detection of Cu<sup>2+</sup> in Aqueous Solution and Zebrafish.

Chae Ju Byeong JB   Yun Dongju D   Lee Hangyul H   Lee Hyojin H   Kim Ki-Tae KT   Kim Cheal C  

ACS omega 20190724 7

A new dansyl-based chemosensor (2-(4-((5-(dimethylamino)naphthalen-1-yl)sulfonyl)piperazin-1-yl)-<i>N</i>-(quinolin-8-yl)acetamide) (<b>DC)</b> for detecting Cu<sup>2+</sup> was synthesized and characterized. <b>DC</b> showed great selectivity to Cu<sup>2+</sup> by a fluorescent "on-off" detection method. Job plot, ESI-mass spectroscopy, and <sup>1</sup>H NMR titration suggested a 1 to 1 binding mode between <b>DC</b> and Cu<sup>2+</sup>. The detection limit was determined to be 43 nM, which is  ...[more]

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