Lutong Bu, Shuangying Li, Linchun Nie, Liushan Jiang, Guangyu Dong, Denghao Song, Wenjing Liu, Xiaodie Geng, Dejing Meng, Qingxiang Zhou
In this study, nitrogen-doped carbon dots (N-CDs) were facilely fabricated by one-pot hydrothermal method with levulinic acid and triethanolamine. A fluorescent sensor array was established for identifying azo compounds including Sudan Orange G (SOG), p-diaminoazobenzene, p-aminoazobenzene, azobenzene and quantitative detection of SOG. Experimental results revealed that azo compounds could quench the fluorescent intensity of N-CDs. Owing to various azo compounds showing different affinities to N-CDs, the sensor array exhibited different fluorescence quenching changes, which were further analyzed with principal component analysis to discriminate azo compounds...
April 16, 2024: Journal of Colloid and Interface Science