A New Thioimide‐Based Fluorescent 'Turn‐On' and Chromogenic Chemodosimeter in Acetonitrile and Its Nanoparticles in Water for Highly Selective and Sensitive Detection of Hg2+. Issue 4 (10th April 2017)

• Record Type: Journal Article
• Authors: Mou, Yong; Lu, Haiyan; Li, Meng; Chen, Chuanfeng
• Is Part Of: Chinese journal of chemistry. Volume 35:Issue 4(2017)
• Page Start: 435
• Page End: 441
• Publication Date: 2017-04-10
• Subjects: Hg2+ ion -- chemodosimeter -- fluorescence -- turn‐on -- nanoparticle; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201600928
• Languages: English
• ISSNs: 1001-604X

Abstract

Abstract: A new thioimide‐based fluorescent 'turn‐on' and chromogenic chemodosimeter for highly selective and sensitive detection of Hg 2+ has been developed. The chemodosimeter showed not only marked color change of the solution from dark green to colorless upon the addition of Hg 2+ ion, but also 100‐fold enhancement of the fluorescent intensity in aqueous acetonitrile. The detection mechanism resulted from the Hg 2+ induced desulfurization of the thioimide to its imide precursor. When the chemodosimeter was assembled into nanoparticles, it could also exhibit remarkably dual response of color change, fluorescence enhancement, and highly selective and sensitive detection of Hg 2+ . Abstract : A new thioimide‐based fluorescent 'turn‐on' and chromogenic chemodosimeter for highly selective and sensitive detection of Hg 2+ has been developed. The dual response of Hg 2+ was not only in the marked color change of the solution from dark green to colorless, but also in the significant enhancement of the fluorescent intensity of the chemodosimeter in aqueous acetonitrile. Moreover, when the chemodosimeter was assembled into nanoparticles, it could also exhibit remarkably dual response of color change and fluorescence enhancement for detection of Hg 2+ .