Issue 38, 2017

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

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

Supplementary files

Article information

Article type
Communication
Submitted
21 Jul 2017
Accepted
06 Sep 2017
First published
06 Sep 2017

J. Mater. Chem. C, 2017,5, 9849-9853

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

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements