A green-synthesized phosphorescent carbon dot composite for multilevel anti-counterfeiting

Wenjie Jiang, Lan Liu, Yueyue Wu, Peng Zhang, Feiyang Li, Juqing Liu, Jianfeng Zhao, Fengwei Huo, Qiang Zhao, Wei Huang

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Room temperature phosphorescent (RTP) materials are rising and gaining considerable attention due to their special photo-capture-release ability. Herein, a kind of environmentally friendly RTP composite was devised by microwaving a mixture of carbon dots, boric acid, and urea, in the presence of covalent bonds and hydrogen bonds between each of the components. The resultant RTP material showed ultra-long phosphorescence lifetime up to 1005.6 ms with an outstanding afterglow as long as 9.0 s. Moreover, this afterglow feature with moisture sensitive behavior was explored to achieve multilevel anti-counterfeiting, with the function of complex decryption of encrypted secret information under multiple stimuli. Our results provide a green strategy for scalable synthesis of carbon-based RTP materials, and extend their application scope to high level information security.

Original languageEnglish
Pages (from-to)4536-4540
Number of pages5
JournalNanoscale Advances
Volume3
Issue number15
DOIs
StatePublished - 7 Aug 2021

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