|
| B-doped carbon quantum dots with long-afterglow room-temperature phosphorescence: Applications in information encryption and humidity sensing |
| Author Name | Affiliation | E-mail | | ZHANG Yuecheng | Yan'an Key Laboratory of Analytical Technology and Detection, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, China | | | YANG Fan | Yan'an Key Laboratory of Analytical Technology and Detection, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, China | | | ZHANG Shiyu | Yan'an Key Laboratory of Analytical Technology and Detection, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, China | | | MA Chengjun | Yan'an Key Laboratory of Analytical Technology and Detection, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, China | | | TIAN Rui | Yan'an Key Laboratory of Analytical Technology and Detection, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, China | | | SUN Xuehua | Yan'an Key Laboratory of Analytical Technology and Detection, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, China | | | LI Haoyu | Yan'an Key Laboratory of Analytical Technology and Detection, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, China | | | SUN Lingbo | Yan'an Medical College of Yan'an University, Yan'an, Shaanxi 716000, China | lingbosun@yau.edu.cn | | MA Hongyan | Yan'an Key Laboratory of Analytical Technology and Detection, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, China | mahy6614@163.com |
|
| Abstract: In this study, boric and benzoic acid (BZA) were used as precursors to synthesize boron-doped roomtemperature phosphorescent carbon quantum dots (B-CQDs-BZA) through a one-step pyrolysis process. The morphology, structure, and luminescent properties of B-CQDs-BZA were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), ultraviolet-visible (UV-Vis) spectroscopy absorption, fluorescence, and phosphorescence spectroscopy. The results demonstrated that the synthesized B-CQDs-BZA primarily consisted of amorphous carbon, with a particle size ranging from 2.0 to 4.5 nm. Upon irradiation with ultraviolet light at 254 or 302 nm, B-CQDs-BZA exhibited a blue phosphorescence signal that persisted for up to 20 s, with a measured lifetime as long as 2.09 s. This method is simple, rapid, and universally applicable, enabling the synthesis of room-temperature phosphorescent CQDs from diverse precursor materials. Leveraging the exceptional room-temperature phosphorescence lifetime of B-CQDs-BZA, these materials can be effectively employed in time-resolved anti-counterfeiting and information encryption. Moreover, based on the quenching effect of water on B-CQDs-BZA, these materials can be further utilized for determining environmental humidity. |
| Keywords: room-temperature phosphorescence carbon quantum dot information encryption humidity |
| Hits: 182 |
| Download times: 77 |
| ZHANG Yuecheng,YANG Fan,ZHANG Shiyu,MA Chengjun,TIAN Rui,SUN Xuehua,LI Haoyu,SUN Lingbo,MA Hongyan.B-doped carbon quantum dots with long-afterglow room-temperature phosphorescence: Applications in information encryption and humidity sensing[J].Chinese Journal of Inorganic Chemistry,2025,41(7):1361-1370. |
| View Full Text View/Add Comment Download reader |
|
|
|
|
|
|
|
|
