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Open AccessArticle

Synthesis of Silane-Based Poly(thioether) via Successive Click Reaction and Their Applications in Ion Detection and Cell Imaging

Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, University of Jinan, Shandong 250022, China
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Polymers 2019, 11(8), 1235; https://doi.org/10.3390/polym11081235
Received: 19 June 2019 / Revised: 2 July 2019 / Accepted: 3 July 2019 / Published: 25 July 2019
(This article belongs to the Special Issue Fluorescent polymers for sensing and imaging)
A series of poly(thioether)s containing silicon atom with unconventional fluorescence were synthesized via successive thiol click reaction at room temperature. Although rigid π-conjugated structure did not exist in the polymer chain, the poly(thioether)s exhibited excellent fluorescent properties in solutions and showed visible blue fluorescence in living cells. The strong blue fluorescence can be attributed to the aggregation of lone pair electron of heteroatom and coordination between heteroatom and Si atom. In addition, the responsiveness of poly(thioether) to metal ions suggested that the selectivity of poly(thioether) to Fe3+ ion could be enhanced by end-modifying with different sulfhydryl compounds. This study further explored their application in cell imaging and studied their responsiveness to Fe3+ in living cells. It is expected that the described synthetic route could be extended to synthesize novel poly(thioether)s with superior optical properties. Their application in cell imaging and ion detection will broaden the range of application of poly(thioether)s. View Full-Text
Keywords: poly(thioether); ion detection; cell imaging; organosilicone; fluorescence quenching poly(thioether); ion detection; cell imaging; organosilicone; fluorescence quenching
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Gou, Z.; Zhang, X.; Zuo, Y.; Lin, W. Synthesis of Silane-Based Poly(thioether) via Successive Click Reaction and Their Applications in Ion Detection and Cell Imaging. Polymers 2019, 11, 1235.

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