Jump to main content
Jump to site search

Issue 68, 2015
Previous Article Next Article

A green solid-phase method for preparation of carbon nitride quantum dots and their applications in chemiluminescent dopamine sensing

Author affiliations

Abstract

A facile, green and one-step synthesis strategy towards highly fluorescent g-CNQDs via solid-phase pyrolyzing melamine and EDTA at low temperature was proposed. The obtained g-CNQDs can produce strong chemiluminescence (CL) in the presence of K3[Fe(CN)6]. The mechanism of the g-CNQDs–K3[Fe(CN)6] CL system was investigated by using CL, UV-Vis absorption, IR, fluorescence and electron spin resonance (ESR) spectrum. The CL emission was probably from the radiative recombination of oxidant-injected holes and the thermally excited electrons in g-CNQDs. The established new CL system was successfully applied to determinate dopamine in the range of 1 × 10−8 to 2 × 10−6 M with a detection limit of 4.7 nM (S/N = 3). The protocol was validated by analyzing serum samples with excellent sensitivity and good recoveries. The new CL system offered a valuable insight for the properties of luminescent g-CNQDs in CL field, and opened a new avenue for its practical applications.

Graphical abstract: A green solid-phase method for preparation of carbon nitride quantum dots and their applications in chemiluminescent dopamine sensing

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Mar 2015, accepted on 15 Jun 2015 and first published on 17 Jun 2015


Article type: Paper
DOI: 10.1039/C5RA05397H
Citation: RSC Adv., 2015,5, 55158-55164
  •   Request permissions

    A green solid-phase method for preparation of carbon nitride quantum dots and their applications in chemiluminescent dopamine sensing

    X. Fan, Y. Feng, Y. Su, L. Zhang and Y. Lv, RSC Adv., 2015, 5, 55158
    DOI: 10.1039/C5RA05397H

Search articles by author

Spotlight

Advertisements