Jump to main content
Jump to site search

Issue 38, 2017
Previous Article Next Article

Dual photoluminescence centers from inorganic-salt-functionalized carbon dots for ratiometric pH sensing

Author affiliations

Abstract

A controlled and effective strategy for synthesizing carbon dots (CDs) with dual photoluminescence (PL) peaks is presented in this report which involved employing coal-based CDs as seeds, and using appropriate diammonium phosphate (DAP) as a modifying agent. The formation of dual PL color CDs (D-CDs) mainly depends on the reaction temperature and thermally induced surface remodification of coal-based CDs with DAP. The origin of dual PL peak emissions is attributed to the presence of grafted N- and P-related groups on CDs through DAP functionalization. The synthesized D-CDs show a distinct pH-sensitive behavior under optimized laboratory conditions. Accordingly, a fluorescent ratiometric probe is developed based on these CDs for the detection of pH distribution and variation over a broad range in a complex system with interfering metal ions.

Graphical abstract: Dual photoluminescence centers from inorganic-salt-functionalized carbon dots for ratiometric pH sensing

Back to tab navigation

Supplementary files

Publication details

The article was received on 21 Jul 2017, accepted on 06 Sep 2017 and first published on 06 Sep 2017


Article type: Communication
DOI: 10.1039/C7TC03266H
Citation: J. Mater. Chem. C, 2017,5, 9849-9853
  •   Request permissions

    Dual photoluminescence centers from inorganic-salt-functionalized carbon dots for ratiometric pH sensing

    S. Hu, X. Meng, F. Tian, W. Yang, N. Li, C. Xue, J. Yang and Q. Chang, J. Mater. Chem. C, 2017, 5, 9849
    DOI: 10.1039/C7TC03266H

Search articles by author

Spotlight

Advertisements