Jump to main content
Jump to site search

Issue 16, 2015
Previous Article Next Article

Amine-rich carbon nanodots as a fluorescence probe for methamphetamine precursors

Author affiliations

Abstract

Amine-functionalized carbon dots (A-CDs) were synthesized by one-step hydrothermal reaction of urea and citric acid. The purified CD sample exhibits a surface states dominated fluorescence emission with a quantum yield of 30%. The A-CDs demonstrate excellent sensitivity toward methamphetamine pre-precursor and precursor, and a remarkable selectivity against common drug cutting agents (diluents) such as aspirin, paracetamol, etc. The specific selectivity of CDs towards such type of drug precursor molecules is first time reported, which appears to be related to the spatial distribution of the surface functional groups. The fluorescence-based sensing mechanism is revealed by a detailed analysis on the static and dynamic fluorescence behaviour. We further demonstrated an immobilization strategy for fabricating solid-state sensors, and the retained sensitivity of the A-CDs after immobilization. The study reveals the potential of the use of a CDs as an effective sensing probe for illicit drugs, which is in demand.

Graphical abstract: Amine-rich carbon nanodots as a fluorescence probe for methamphetamine precursors

Back to tab navigation

Supplementary files

Publication details

The article was received on 03 Jul 2015, accepted on 22 Jul 2015 and first published on 22 Jul 2015


Article type: Paper
DOI: 10.1039/C5AY01715G
Author version
available:
Download author version (PDF)
Anal. Methods, 2015,7, 6869-6876

  •   Request permissions

    Amine-rich carbon nanodots as a fluorescence probe for methamphetamine precursors

    T. H. Kim, H. W. Ho, C. L. Brown, S. L. Cresswell and Q. Li, Anal. Methods, 2015, 7, 6869
    DOI: 10.1039/C5AY01715G

Search articles by author

Spotlight

Advertisements