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The probe PTA\u2010Py shows a good fluorescence response to Hg<jats:sup>2+<\/jats:sup> ions due to the Hg<jats:sup>2+<\/jats:sup>\u2010promoted deprotection reaction of thioacetal groups to regenerate the original 1\u2010pyrene formaldehyde compound. After adding Hg<jats:sup>2+<\/jats:sup> to the PTA\u2010Py solution, the fluorescence intensity (FI) gradually increases with increasing concentrations of Hg<jats:sup>2+<\/jats:sup>. Compared with other metal ions, the probe exhibits high sensitivity, good selectivity, and rapid response to Hg<jats:sup>2+<\/jats:sup>. The low detection limits are 12.3\u00a0n<jats:sc>m<\/jats:sc> in ethanol\u2010PBS buffer and 13.3\u00a0n<jats:sc>m<\/jats:sc> in water, respectively. The results imply that the simply synthesized water\u2010soluble polymeric probe\u00a0had potential applications in the rapid detection of Hg<jats:sup>2+<\/jats:sup> ions in aqueous solutions. Moreover, the polymeric PTA\u2010Py shows high sensitivity for CH<jats:sub>3<\/jats:sub>Hg<jats:sup>+<\/jats:sup> with detection limits of 26.5\u00a0n<jats:sc>m<\/jats:sc> in ethanol\/PBS buffer. In addition, PTA\u2010Py can efficiently detect Hg<jats:sup>2+<\/jats:sup> ions in HeLa cells. The results demonstrate that a valuable method is developed for biocompatible polymeric sensors for Hg<jats:sup>2+<\/jats:sup> ions in biological and environmental samples.<\/jats:p>","DOI":"10.1002\/marc.202300631","type":"journal-article","created":{"date-parts":[[2023,12,30]],"date-time":"2023-12-30T12:43:20Z","timestamp":1703940200000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Pyrene\u2010Based \u201cTurn\u2010On\u201d Fluorescent Polymeric Probe with Thioacetal Units in the Main Chain for Mercury(II) Detection in Aqueous Solutions and Living Cells"],"prefix":"10.1002","volume":"45","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2041-8220","authenticated-orcid":false,"given":"Yu","family":"Gu","sequence":"first","affiliation":[{"name":"Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University, Changsha  Changsha 410082 P. 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