Invisible Security Ink Based on Water-Soluble Graphitic Carbon Nitride Quantum Dots
Invisible Security Ink Based on Water-Soluble Graphitic Carbon Nitride Quantum Dots
复制标题
基于水溶性石墨氮化碳量子点的隐形防伪油墨
DOI：
10.1002/anie.201510945
复制
发表时间：
2016-02-18
影响因子：
16.6
通讯作者：
Guo, Liangqia
中科院分区：
文献类型：
--
作者：
Song, Zhiping;Lin, Tianran;Guo, Liangqia
刺激响应型光致发光（PL）材料作为荧光油墨被广泛应用于数据安全领域。然而，传统的荧光墨水在保持信息保密性方面受到限制，因为墨水通常在环境光或紫外线照射下肉眼可见。本文介绍了无金属水溶性石墨氮化碳量子点（g-CNQDs）作为信息编码、加密和解密的隐形安全墨水。g-CNQDs所写的信息在环境光和紫外光下是不可见的，但它可以被荧光微孔板读取器读取。使用草酸和碳酸氢钠分别作为加密试剂和解密试剂对信息进行加密和解密。我们的研究结果为使用水溶性g-CNQDs作为隐形安全墨水进行高级信息编码和保护提供了新的机会。
Stimuli-responsive photoluminescent (PL) materials have been widely used as fluorescent ink for data security applications. However, traditional fluorescent inks are limited in maintaining the secrecy of information because the inks are usually visible by naked eyes either under ambient light or UV-light illumination. Here, we introduced metal-free watersoluble graphitic carbon nitride quantum dots (g-CNQDs) as invisible security ink for information coding, encryption, and decryption. The information written by the g-CNQDs is invisible in ambient light and UV light, but it can be readable by a fluorescence microplate reader. Moreover, the information can be encrypted and decrypted by using oxalic acid and sodium bicarbonate as encryption reagent and decryption reagent, respectively. Our findings provide new opportunities for high-level information coding and protection by using water-soluble g-CNQDs as invisible security ink.