Dual colorimetric and fluorescent imaging of latent fingerprints on both porous and nonporous surfaces with near-infrared fluorescent semiconducting polymer dots

You Hong Chen, Shih Yu Kuo, Wei Kai Tsai, Chi Shiang Ke, Chia Hsien Liao, Chuan Pin Chen, Yeng Tseng Wang, Hsiu Wei Chen, Yang-Hsiang Chan*

*此作品的通信作者

研究成果: Article同行評審

69 引文 斯高帕斯(Scopus)

摘要

Semiconducting polymer dots (Pdots) have recently been proven as a novel type of ultrabright fluorescent probes that can be extensively used in analytical detection. Here, we developed a dual visual sensor based on Pdots for fingerprint imaging. We first designed and synthesized two types of near-infrared (NIR) fluorescent polymers and then embedded ninhydrin into the Pdot matrix. The resulting Pdot assays showed the colorimetric and fluorescent dual-readout abilities to detect latent fingerprints on both porous and nonporous surfaces. The developed fingerprints clearly revealed first-, second-, and third-level details with high contrast, high selectivity, and low background interference. We also grafted the chemical groups on the nanoparticle surface to investigate the mechanisms involved in the fingerprint development processes. We further utilized this assay in note paper and checks for latent fingerprint imaging. We believe that this dual-readout method based on Pdots will create a new avenue for research in fingerprint detection and anticounterfeiting technology.

原文English
頁(從 - 到)11616-11623
頁數8
期刊Analytical Chemistry
88
發行號23
DOIs
出版狀態Published - 1 1月 2016

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