Jump to main content
Jump to site search


Microwave-assisted fabrication of multicolor photoluminescent carbon dots as a ratiometric fluorescence sensor for iron ions

Author affiliations

Abstract

Herein, we present a facile approach for the preparation of multicolor emissive carbon dots (M-CDs) within 20 min by microwave irradiation. M-CDs could emit tunable fluorescence emissions from violet to red without clearly compromising the fluorescence intensities. Moreover, M-CDs showed excellent solubility and stability in both water and common organic solvents. Their optical properties and structural characterization were investigated in detail. The continuously tunable multicolor emissions were considered to originate from surface C[double bond, length as m-dash]N-related groups. For the first time, M-CDs were utilized as a sensitive and selective ratiometric fluorescence sensor for label-free detection of Fe3+. The fluorescent intensity ratio of dual fluorescence bands (F368/F605) decreased linearly against the concentration of Fe3+ with a detection limit of 10 nM. Excellent results were also obtained in real water sample analysis with recoveries ranging from 91% to 99%. The M-CDs demonstrated amphibious performance and unique multicolor emissions, which could offer them more opportunities in advanced applications such as multicolor displays, multimodal sensing and many other fields.

Graphical abstract: Microwave-assisted fabrication of multicolor photoluminescent carbon dots as a ratiometric fluorescence sensor for iron ions

Back to tab navigation

Supplementary files

Publication details

The article was received on 01 Nov 2018, accepted on 27 Nov 2018 and first published on 27 Nov 2018


Article type: Paper
DOI: 10.1039/C8NJ05324C
Citation: New J. Chem., 2018, Advance Article
  •   Request permissions

    Microwave-assisted fabrication of multicolor photoluminescent carbon dots as a ratiometric fluorescence sensor for iron ions

    Z. Sun, Z. Yang, L. Zhao, Y. Zhang, Y. Li, J. Hou and L. Ding, New J. Chem., 2018, Advance Article , DOI: 10.1039/C8NJ05324C

Search articles by author

Spotlight

Advertisements