Journal of Materials Chemistry B
Identification of eight pathogenic microorganisms by single concentration-dependent multicolor carbon dots
Shujun Wang, Yongqiang Zhang, Peng Zhuo, Qiushi Hu, Zhenqiang Chen, Lei Zhou
The identification of pathogenic microorganisms is crucial to human health and industrial development, however, traditional culture-based methods are laborious and time consuming. We developed a novel method for the identification of pathogenic microorganisms based on single concentration-dependent carbon dots (CDs). The CDs were synthesized using a microwave heating approach without any complicated purification processes and the PL emission wavelength of the CDs could be tuned only by changing the concentration of the solution. The concentration-dependent CDs were applied for multicolor bioimaging and identification of eight kinds of microorganisms within minutes using different fluorescence spectra. This work provides a new approach for the detection of multiplex targets in real samples and lays a foundation for food safety monitoring.