Multifunctional Carbon Dots for Trace Water Detection, White LEDs, and Bioimaging. Issue 48 (20th December 2019)

• Record Type: Journal Article
• Authors: Geng, Bijiang; Wang, Xulong; Li, Ping; Shen, Wenwen; Qin, Hua; Fang, Fuling; Yin, Luqiao; Shen, Longxiang; Pan, Dengyu
• Is Part Of: ChemistrySelect. Volume 4:Issue 48(2019)
• Page Start: 14162
• Page End: 14168
• Publication Date: 2019-12-20
• Subjects: carbon dots -- fluorescence nanoswitch -- trace water detection -- white LEDs -- biomembrane imaging; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201904133
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Highly fluorescent, ultrafine CDs were synthesized by a simple one‐pot solvothermal method. The as‐prepared CDs exhibited unique yellow emission and intrinsic fluorescence characteristics independent of excitation wavelengths. We revealed a distinct fluorescence quenching mechanism in the CDs, where the reversible alternation between aggregation and dispersion states can mediate the fluorescence turn‐on and turn‐off response. Therefore, the CDs can be used as a fluorescence nanoswitch for the highly sensitive quantitative detection of trace water in organic solvents. We also demonstrated the applications of the CDs as a stable yellow phosphor and biological probe for white LEDs and biomembrane imaging. Our results suggest that the low‐cost fluorescent material has great promise for practice applications in sensing, bioimaging, and optoelectronic device. Abstract : The prepared CDs and their outlined applications as a chemical sensor, a phosphor and a fluorescent probe for trance water detection, white LEDs, and Biomembrane imaging.