Carbon dots(CDs) with fluorescence(FL) and room-temperature phosphorescence(RTP) optical properties have attracted dramatically growing interest in anti-counterfeiting application. Herein, color-tunable and stable FL ...Carbon dots(CDs) with fluorescence(FL) and room-temperature phosphorescence(RTP) optical properties have attracted dramatically growing interest in anti-counterfeiting application. Herein, color-tunable and stable FL and ultralong RTP(to naked eyes ~14 s) are successfully achieved in CDs system. Encoding information and patterns fabricated by directly screen-printing method are invisible to eyes under natural light. Interestingly, clear and multicolor patterns with tunable FL and RTP emissions are identified under the 365 nm, 395 nm and 465 nm excitation and removal of them, indicating potential application of carbon dots with different FL and RTP outputs in the high-level photonic anti-counterfeiting field.展开更多
基金supported by the Natural Science Foundation of Hubei Province for Distinguished Young Scholars (No. 2019CFA056)the Fundamental Research Funds for the Central Universities and Wuhan University and the Fundamental Research Funds for the Central Universities (No. 2042021kf0226)。
文摘Carbon dots(CDs) with fluorescence(FL) and room-temperature phosphorescence(RTP) optical properties have attracted dramatically growing interest in anti-counterfeiting application. Herein, color-tunable and stable FL and ultralong RTP(to naked eyes ~14 s) are successfully achieved in CDs system. Encoding information and patterns fabricated by directly screen-printing method are invisible to eyes under natural light. Interestingly, clear and multicolor patterns with tunable FL and RTP emissions are identified under the 365 nm, 395 nm and 465 nm excitation and removal of them, indicating potential application of carbon dots with different FL and RTP outputs in the high-level photonic anti-counterfeiting field.
