A facile synthesis of CDs from quinoa for nanosensors and bio-imagining. (2nd July 2020)

• Record Type: Journal Article
• Authors: Xu, Dandan; Li, Yong; Li, Naixin; Lei, Fang; Liu, Jinliang; Shi, Ying; Yin, Luqiao; Zhang, Lei
• Is Part Of: Nano express. Volume 1:Number 2(2020)
• Publication Date: 2020-07-02
• Subjects: carbon dots -- luminescence -- ion detection -- cell imagining; Nanotechnology -- Periodicals; Nanoscience -- Periodicals; 620.5
• DOI: 10.1088/2632-959X/ab9f53
• Languages: English
• ISSNs: 2632-959X

Abstract

Abstract: Carbon dots (CDs) with strong fluorescence were synthesized by a facial and green hydrothermal method using biomass quinoa as the carbon source. The as-prepared carbon dots (CDs) aqueous solution shows bright blue photoluminescence under the irradiation of UV lamp with a quantum yield of 14% and considerable luminescence stability and excellent strong photobleaching resistance. The as-prepared CDs was nontoxic for in vitro and in vivo applications. In addition, not only the as-prepared CDs were used for HeLa cells imaging, but also detect Fe 3+ ions in cells, and the ideal imaging pictures were obtained under excitation of 405 nm. The as-prepared carbon dots possessed excellent responsive properties towards Fe 3+ . The quenching phenomenon can be used to detect the Fe 3+ ions within a linear range of 0–300 μ mol l −1 with a limit of detection of 50 nmol l −1 .