Tunable excitation-dependent-fluorescence of carbon dots: Fingerprint curves for super anti-counterfeiting

被引：40

作者：

Cheng, Ke ^{[1
,2
]}

Qi, Rui ^{[1
,2
]}

Lan, Shuai ^{[1
]}

Wang, Hongyang ^{[1
]}

Zheng, Xuefang ^{[1
]}

Liu, Chun ^{[1
]}

Jia, Dandan ^{[1
]}

Cao, Lei ^{[1
]}

Wang, Dongjun ^{[1
,2
]}

机构：

[1] Hebei Normal Univ Sci & Technol, Sch Chem Engn, 360 Hebei St, Qinhuangdao, Hebei, Peoples R China

[2] Hebei Normal Univ Sci & Technol, Ctr Anal & Measurement, 360 Hebei St, Qinhuangdao, Hebei, Peoples R China

来源：

DYES AND PIGMENTS | 2020年 / 174卷

关键词：

Carbon dots; Excitation-dependent fluorescence; Concentration-dependent fluorescence; Anti-Counterfeiting; NONCONJUGATED POLYMER DOTS; LINK-ENHANCED EMISSION; PHOTOLUMINESCENCE MECHANISM; YIELD;

D O I：

10.1016/j.dyepig.2019.108106

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A novel concept of anti-counterfeiting is proposed, based on the special properties of excitation-dependent-fluorescence (EDF) and emission-dependent-excitation (EDE) of carbon dots (CDs) in polymer matrix. EDF and EDE behaviors can be controlled by adjusting the concentration of CDs or changing species of CDs and their corresponding polymer matrix. Meanwhile, multi-emission in EDF spectrum is observed, which is helpful to identification. Particularly, the curves in EDF or EDE spectrum as unique and sophisticated as human fingerprints are highly difficult to replicate, which promise practical applications of CDs in the field of anti-counterfeiting.

引用

页数：10

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