Matrix-Free and Highly Efficient Room-Temperature Phosphorescence Carbon Dots towards Information Encryption and Decryption

被引：38

作者：

Qi, Hetong ^{[1
]}

Zhang, Hengqi ^{[1
]}

Wu, Xuemei ^{[1
]}

Tang, Yuhai ^{[1
]}

Qian, Manping ^{[2
]}

Wang, Ke ^{[2
]}

Qi, Honglan ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Sci, Dept Appl Chem, 28 West Xianning Rd, Xian 710049, Peoples R China

[2] Shaanxi Normal Univ, Sch Chem & Chem Engn, Key Lab Analyt Chem Life Sci Shaanxi Prov, 620 West Changan Ave, Xian 710119, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2020年 / 15卷 / 08期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

carbon dots; matrix-free; room-temperature phosphorescence; information protection; QUANTUM DOTS; DESIGN;

D O I：

10.1002/asia.202000063

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1281 / 1284

页数：4

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