One-pot synthesis of 2, 2'-dipicolylamine derived highly photoluminescent nitrogen-doped carbon quantum dots for Fe3+ detection and fingermark detection. (29th May 2020)

• Record Type: Journal Article
• Authors: Li, Quan; Guo, Zhiwei; Zhao, Xiaoyan; Zhang, Taoyi; Chen, Jing; Wei, Yun
• Is Part Of: Nanotechnology. Volume 31:Number 33(2020)
• Publication Date: 2020-05-29
• Subjects: carbon quantum dots -- 2 -- 2'-dipicolylamine -- Fe3+ sensing -- latent fingermark detection; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ab8f4b
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: The novel nitrogen-doped carbon quantum dots (N-CQDs) with high fluorescence quantum yield of 23.2% were successfully prepared via a simple hydrothermal reaction with citric acid and 2, 2'-dipicolylamine. The as-prepared blue fluorescent N-CQDs had excellent water dispersibility, and showed pH and excitation-dependent emission behaviors. Noticeably, owing to the strong interaction between the residual 2, 2'-dipicolylamine group on the surface of N-CQDs and Fe 3+, the N-CQDs could be used as a turn off fluorescence probe for Fe 3+ sensing through an electron transfer process. Moreover, the photoluminescent N-CQDs/poly(vinyl alcohol) film was further applied for latent fingermark imaging.