Issue 48, 2017, Issue in Progress

Correlation of carbon dots' light-activated antimicrobial activities and fluorescence quantum yield

Abstract

This study investigated the photo-activated antibacterial function of a series of specifically prepared carbon dots with 2,2′-(ethylenedioxy)bis(ethylamine) as the surface functionalization molecule (EDA-CDots), whose fluorescence quantum yields (ΦF) ranged from 7.5% to 27%. The results revealed that the effectiveness of CDots' photo-activated bactericidal function was correlated with their observed ΦF values. The antimicrobial activities of these EDA-CDots against both Gram negative and Gram positive model bacterial species (E. coli and Bacillus subtilis, respectively) were also evaluated under conditions of varying other experimental parameters including dot concentrations and treatment times. Optimization of the bactericidal effect of the EDA-CDots by a combination of the selected ΦF, concentration and treatment time was explored, and mechanistic implications of the results are discussed.

Graphical abstract: Correlation of carbon dots' light-activated antimicrobial activities and fluorescence quantum yield

Article information

Article type
Paper
Submitted
12 May 2017
Accepted
02 Jun 2017
First published
12 Jun 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 30177-30184

Correlation of carbon dots' light-activated antimicrobial activities and fluorescence quantum yield

M. M. Al Awak, P. Wang, S. Wang, Y. Tang, Y. Sun and L. Yang, RSC Adv., 2017, 7, 30177 DOI: 10.1039/C7RA05397E

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