A spirobifluorene-based two-photon fluorescence probe for mercury ions and its applications in living cells

Xiao, Haibo; Zhang, Yanzhen; Wu, Zhuangchun; Li, Shaozhi; Tan, Jingjing; Han, Zhongying

doi:10.1016/j.matchemphys.2017.02.007

Cited by 7 publications

(1 citation statement)

References 29 publications

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“…This fluorophore is mostly used in field-effect transistors, light-emitting devices, phototransistors, and solar cells . A handful of spirobifluorene fluorescent sensors were reported for the detection of NO, Ag(I), Hg(II), − Zn(II), and Au(III) ions. In this study, di(bissulfonamido)spirobifluorene ( DBSS ), as shown in Figure , was synthesized and used as a fluorescent sensor.…”

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confidence: 99%

Fluorescent Sensor for Copper(II) and Cyanide Ions via the Complexation–Decomplexation Mechanism with Di(bissulfonamido)spirobifluorene

et al. 2021

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A novel spirobifluorene derivative bearing two bissulfonamido groups is successfully synthesized by Sonogashira coupling. This compound exhibits a strong fluorescence quenching by Cu(II) ion in a 50% mixture between acetonitrile and 20 mM pH 7.0 N -(2-hydroxyethyl)piperazine- N ′-ethanesulfonic acid (HEPES) buffer with a detection limit of 98.2 nM. However, this sensor also shows ratiometric signal shifts from blue to yellow in the presence of Zn(II), Pb(II), and Hg(II) ions. The static quenching mechanism is verified by the signal reversibility using ethylenediaminetetraacetic acid (EDTA) and the Stern–Volmer plots at varying temperatures. The Cu(II)–spirobifluorene complex shows a highly selective fluorescence enhancement upon the addition of CN – ion with the detection limit of 390 nM. The application of this complex for quantitative analysis of spiked CN – ion in real water samples resulted in good recoveries.

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