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A Dual Responsive Turn-on Chemosensor for the Detection of AS(III) in Aqueous Environment

Verma, Vikas (2017) A Dual Responsive Turn-on Chemosensor for the Detection of AS(III) in Aqueous Environment. Masters thesis, Indian Institute of Science Education and Research Kolkata.

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    Abstract

    Monitoring As(III) affected water bodies on a regular basis requires a reliable, simple and cost effective testing method. In this work, we have designed and synthesized fluorescein-derived monomer (FT) and it’s polymer (Poly-Nor-OR) which is first example of a chemodosimeter for simple and efficient detection of As(III) in aqueous environment. The sensitivity and selectivity of the monomer and it’s polymer towards As(III) among different metal ions were investigated by UV-vis and fluorescence spectroscopy. Complexing with As(III) ion leads to spirolactam ring opening of FT and consequently causes a color variation from colorless to pink. The detection limit was found to be 3.94 x 10⁻¹¹ M. FT is capable of sensing As³⁺ colorimetrically and fluorimetrically and displays sub-ppb detection limit.

    Item Type: Thesis (Masters)
    Additional Information: Supervisor: Dr. Raja Shunmugam
    Uncontrolled Keywords: Aqueous Environment; Arsenic Sensing; As(III); Chemosensor
    Subjects: Q Science > QD Chemistry
    Divisions: Department of Chemical Sciences
    Depositing User: IISER Kolkata Librarian
    Date Deposited: 14 Nov 2017 16:08
    Last Modified: 14 Nov 2017 16:10
    URI: http://eprints.iiserkol.ac.in/id/eprint/576

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