Rong Mingcong, Lin Liping, Song Xinhong, Zhao Tingting, Zhong Yunxin, Yan Jiawei, Wang Yiru, Chen Xi
Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, China.
Anal Chem. 2015 Jan 20;87(2):1288-96. doi: 10.1021/ac5039913. Epub 2014 Dec 30.
An effective and facile fluorescence sensing approach for the determination of 2,4,6-trinitrophenol (TNP) using the chemically oxidized and liquid exfoliated graphitic carbon nitride (g-C3N4) nanosheets was developed. The strong inner filter effect and molecular interactions (electrostatic, π-π, and hydrogen bonding interactions) between TNP and the g-C3N4 nanosheets led to the fluorescence quenching of the g-C3N4 nanosheets with efficient selectivity and sensitivity. Under optimal conditions, the limit of detection for TNP was found to be 8.2 nM. The proposed approach has potential application for visual detection of TNP in natural water samples for public safety and security.
开发了一种有效且简便的荧光传感方法，用于使用化学氧化和液相剥离的石墨相氮化碳（g-C3N4）纳米片测定2,4,6-三硝基苯酚（TNP）。TNP与g-C3N4纳米片之间强烈的内滤效应和分子相互作用（静电、π-π和氢键相互作用）导致g-C3N4纳米片的荧光猝灭，具有高效的选择性和灵敏度。在最佳条件下，TNP的检测限为8.2 nM。该方法在天然水样中TNP的可视化检测方面具有潜在应用，以保障公共安全。
