Department of Applied Chemistry, School of Science, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an, Shaanxi, 710049, P. R. China.
Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620, West Chang'an Avenue, Xi'an, 710119, P. R. China.
Chem Asian J. 2020 Apr 17;15(8):1281-1284. doi: 10.1002/asia.202000063. Epub 2020 Mar 18.
Designing efficient room-temperature phosphorescence (RTP) carbon dots (C-dots) without the need of an additional matrix is important for various applications. Herein, matrix-free and highly efficient C-dots with yellow-green RTP emission have been successfully synthesized towards information encryption and decryption. Phytic acid (PA) and triethylenetetramine are used as molecular precursors, and a facile microwave-assisted heating method is selected as synthesis method. The obtained C-dots exhibit a maximum phosphorescence emission at around 535 nm under an excitation wavelength of 365 nm and a long average lifetime up to 750 ms (more than 9 s to the naked eye). PA containing six phosphate groups and serving as P source plays a significant role in producing the RTP C-dots. Furthermore, potential applications of the RTP C-dots in the field of information encryption and decryption are successfully demonstrated.
设计无需额外基质的高效室温磷光（RTP）碳点（C-dots）对于各种应用非常重要。在此，我们成功合成了具有高效、黄绿光 RTP 发射的无基质 C-dots，并将其用于信息加密和解密。植酸（PA）和三乙烯四胺被用作分子前体，选择简单的微波辅助加热方法作为合成方法。所得 C-dots 在 365nm 激发波长下于 535nm 左右表现出最大磷光发射，平均寿命长达 750ms（肉眼可见超过 9s）。含有六个磷酸盐基团并作为 P 源的 PA 在产生 RTP C-dots 方面发挥了重要作用。此外，成功地展示了 RTP C-dots 在信息加密和解密领域的潜在应用。
