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Novel AIE-active ratiometric fluorescent probes for mercury(II) based on the Hg2+-promoted deprotection of thioketal, and good mechanochromic properties

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Abstract

Novel AIE-active ratiometric fluorescent probes for Hg2+ were synthesized, which combined the advantages of the excellent luminescence properties of AIEgens in the solid state and the high selectivity of the Hg2+-promoted deprotection reaction. Upon testing with mercury ions, the luminescent color changed from sky blue to yellow-green almost immediately, while other metal ions (Ag+, Fe3+, Cu2+, Pb2+, Co2+, Cr3+, Al3+, Cd2+, Mg2+, Mn2+, Ba2+, Fe2+, Ca2+, Ni2+, Zn2+, Li+, K+, and Na+) caused no disturbance to the sensing process. Furthermore, the fabricated test strips reported the presence of Hg2+ ions with the detection limit as low as 1 × 10−5 M. Moreover, the synthesized AIEgens showed reversible mechanochromic properties with high color contrast, suggesting that they could have additional promising applications in optoelectronic devices.

Graphical abstract: Novel AIE-active ratiometric fluorescent probes for mercury(ii) based on the Hg2+-promoted deprotection of thioketal, and good mechanochromic properties

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Publication details

The article was received on 16 Oct 2017, accepted on 18 Dec 2017 and first published on 19 Dec 2017


Article type: Paper
DOI: 10.1039/C7TC04712F
Citation: J. Mater. Chem. C, 2018, Advance Article
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    Novel AIE-active ratiometric fluorescent probes for mercury(II) based on the Hg2+-promoted deprotection of thioketal, and good mechanochromic properties

    Z. Ruan, Y. Shan, Y. Gong, C. Wang, F. Ye, Y. Qiu, Z. Liang and Z. Li, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C7TC04712F

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