Work

Dual-emitting quantum dot nanohybrid for imaging of latent fingerprints: simultaneous identification of individuals and traffic light-type visualization of TNT

Year: 2015

Type: article

Abstract: , the PAA-functionalized green QDs and red QD-doped silica nanoparticles, could be explored for fingerprint imaging. Due to the formation of a Meisenheimer complex between TNT and PAA, the green-emitting QDs could be quenched by TNT, meanwhile the red-emitting QDs were inert. Therefore, the nanohybrid exhibited a traffic light-type fluorescence color change (green-yellow-red) to TNT concentration in the range of 40-400 μM. This method is promising for potential applications in security-screening needs in public areas such as airports and train stations.

Source: Chemical Science

DOI: 10.1039/c5sc01497b

Authors: Peng Wu, Chaoying Xu, Xiandeng Hou, Jing-Juan Xu, Hong-Yuan Chen

Institutions: Sichuan University, State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University

Language: English

Topic: Forensic Fingerprint Detection Methods

Subfield: Safety Research

Field: Social Sciences

Domain: Social Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Priority Academic Program Development of Jiangsu Higher Education Institutions

Awards: G3821226380, 生物分子在光电功能界面上行为的基础研究及其传感应用, G5347464184