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However, there are few reports on the preparation of metal\u2010decorated CDs that give red emission and a high photoluminescence quantum yield (PLQY). Here, we demonstrate a zinc (existing in human body) ion\u2010doping strategy to observably enhance the PLQY and lengthen the CD emission wavelength. The prepared Zn\/ZnO\u2010decorated CDs (Zn\u2010CDs) produced red fluorescence (623\u00a0nm) with a superior PLQY of 40.3%. Through a series of analyses, Zn\u2010CDs were confirmed to contain an oxidation state and reduction state of Zn doping into the internal defects and surface of Zn\u2010CDs. More valuably, the Zn\u2010CDs had excellent chemical stability, photo\u2010stability, long\u2010term storage stability, and high biocompatibility, and therefore could be used as a robust red fluorescence probe for high\u2010quality cellular imaging.<\/jats:p>","DOI":"10.1002\/bio.3671","type":"journal-article","created":{"date-parts":[[2019,7,2]],"date-time":"2019-07-02T00:16:56Z","timestamp":1562026616000},"page":"759-766","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Dramatic red fluorescence enhancement and emission red shift of carbon dots following Zn\/ZnO decoration"],"prefix":"10.1002","volume":"34","author":[{"given":"Gancheng","family":"Zuo","sequence":"first","affiliation":[{"name":"School of Chemical Engineering Nanjing University of Science &amp; Technology  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiangsheng","family":"Hu","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering Nanjing University of Science &amp; Technology  Nanjing China"},{"name":"Key Laboratory of Graphene Technologies and Applications of Zhejiang Province Ningbo Institute of Materials Technology &amp; Engineering (NIMTE), Chinese Academy of Sciences  Ningbo China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuting","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment Nanjing University  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aming","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering Nanjing University of Science &amp; Technology  Nanjing 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