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Fluorescence studies indicate that the as\u2010prepared PEI\u2010CDs exhibit strong fluorescence emission at 446\u00a0nm with excitation at 365\u00a0nm. Upon the sequential addition of Cu<jats:sup>2+<\/jats:sup> and H<jats:sub>2<\/jats:sub>S, PEI\u2010CDs result in an interesting \u201cON\u2212OFF\u2212ON\u201d three\u2010state emission responses, promising a bifunctional sensory platform. Moreover, the Cu<jats:sup>2+<\/jats:sup>\/H<jats:sub>2<\/jats:sub>S\u2010facilated reversible fluorescence changes of PEI\u2010CDs have demonstrated the design of an INHIBIT logic system based on Boolean logic.<\/jats:p>","DOI":"10.1002\/bab.1739","type":"journal-article","created":{"date-parts":[[2019,2,22]],"date-time":"2019-02-22T12:17:41Z","timestamp":1550837861000},"page":"426-433","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Facile reflux synthesis of polyethyleneimine\u2010capped fluorescent carbon dots for sequential bioassays toward Cu<sup>2+<\/sup>\/H<sub>2<\/sub>S and its application for a logic system"],"prefix":"10.1002","volume":"66","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3322-1489","authenticated-orcid":false,"given":"Zi\u2010Han","family":"Chen","sequence":"first","affiliation":[{"name":"School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco\u2010Restoration East China Normal University  Shanghai People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7719-9845","authenticated-orcid":false,"given":"Xin\u2010Yue","family":"Han","sequence":"additional","affiliation":[{"name":"School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco\u2010Restoration East China Normal University  Shanghai People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zi\u2010Yang","family":"Lin","sequence":"additional","affiliation":[{"name":"School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco\u2010Restoration East China Normal University  Shanghai People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yu\u2010Lin","family":"Fan","sequence":"additional","affiliation":[{"name":"School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco\u2010Restoration East China Normal University  Shanghai People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guoyue","family":"Shi","sequence":"additional","affiliation":[{"name":"School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco\u2010Restoration East China Normal University  Shanghai People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shengqiang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Fujian Provincial Key Laboratory of Resources and Environment Monitoring &amp; Sustainable Management and Utilization College of resource and chemical engineering, Sanming University  Sanming Fujian People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5108-1275","authenticated-orcid":false,"given":"Min","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Chemistry and Molecular Engineering, Shanghai Key Laboratory for Urban Ecological Processes and Eco\u2010Restoration East China Normal University  Shanghai People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,2,28]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja040082h"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1039\/C4CS00269E"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.carbon.2014.12.045"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6TA10220D"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00604-015-1705-3"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6TB02131J"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.3390\/nano6090157"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1021\/acssensors.6b00607"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1039\/C7TC03314A"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/cr040410w"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja204628b"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/nrn1886"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/ac010319h"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.talanta.2005.04.035"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.msec.2016.05.100"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.colsurfb.2014.10.027"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(07)60196-2"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.carbon.2012.02.046"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/ac3012126"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1039\/C7AN01136A"}],"container-title":["Biotechnology and Applied Biochemistry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fbab.1739","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/bab.1739","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/bab.1739","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/iubmb.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/bab.1739","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,9]],"date-time":"2023-09-09T13:34:07Z","timestamp":1694266447000},"score":1,"resource":{"primary":{"URL":"https:\/\/iubmb.onlinelibrary.wiley.com\/doi\/10.1002\/bab.1739"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,2,28]]},"references-count":20,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2019,5]]}},"alternative-id":["10.1002\/bab.1739"],"URL":"https:\/\/doi.org\/10.1002\/bab.1739","archive":["Portico"],"relation":{},"ISSN":["0885-4513","1470-8744"],"issn-type":[{"value":"0885-4513","type":"print"},{"value":"1470-8744","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,2,28]]},"assertion":[{"value":"2018-12-06","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-02-15","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-02-28","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}