Facile synthesis of carboxymethyl cellulose sulfur quantum dots for live cell imaging and sensitive detection of Cr(VI) and ascorbic acid.

Carbohydr Polym

Key Laboratory of New Processing Technology for Nonferrous Metal and Materials of Chinese Ministry of Education, College of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, China. Electronic address:

Published: December 2020

Nowadays the synthesis of stable fluorescent sulfur quantum dots (SQDs) remains a big challenge. Herein, the utilization of carboxymethyl cellulose (CMC) to synthesis of SQDs is reported. Benefiting from the unique composition and structure of CMC macromolecule, the resulted CMC-SQDs simultaneously show high aqueous dispersibility and stability, tunable emission, stable fluorescence and low cytotoxicity, which make them promising for working as a fluorescent probe. Fluorescence detection experiments suggested that the CMC-SQDs could serve as a fluorescence on-off-on switch to sensitive and selective detection of Cr(VI) and ascorbic acid (AA) based on the inner filter effect (IFE). The limit of detection towards Cr(VI) and AA can reach 0.024 and 0.18 μM with linear range of 0.5-225 and 1-300 μM, respectively, which compares favorably to other reported fluorescent probes. In addition, the employment of fluorescent CMC-SQDs for practical detection of Cr(VI) and AA was also studied.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.carbpol.2020.116882DOI Listing

Publication Analysis

Top Keywords

detection crvi
16
carboxymethyl cellulose
8
sulfur quantum
8
quantum dots
8
crvi ascorbic
8
ascorbic acid
8
detection
5
facile synthesis
4
synthesis carboxymethyl
4
cellulose sulfur
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!