title: Highly luminescent S,N co-doped carbon quantum dots-sensitized chemiluminescence on luminol-H2O2system for the determination of ranitidine.
abstract: S,N co-doped carbon quantum dots (N,S-CQDs) with super high quantum yield (79%) were prepared by the hydrothermal method and characterized by transmission electron microscopy, photoluminescence, UV-Vis spectroscopy and Fourier transformed infrared spectroscopy. N,S-CQDs can enhance the chemiluminescence intensity of a luminol-H2O2system. The possible mechanism of the luminol-H2O2-(N,S-CQDs) was illustrated by using chemiluminescence, photoluminescence and ultraviolet analysis. Ranitidine can quench the chemiluminescence intensity of a luminol-H2O2-N,S-CQDs system. So, a novel flow-injection chemiluminescence method was designed to determine ranitidine within a linear range of 0.5-50 μg ml-1and a detection limit of 0.12 μg ml-1. The method shows promising application prospects.
authors.affiliation: School of Science, China Pharmaceutical University, Nanjing, China.
authors.forename: Jianqiu
authors.initials: J
authors.lastname: Chen
authors.affiliation: School of Science, China Pharmaceutical University, Nanjing, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Shu
authors.affiliation: School of Science, China Pharmaceutical University, Nanjing, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Chen
authors.affiliation: School of Science, China Pharmaceutical University, Nanjing, China.
authors.forename: Zhiran
authors.initials: Z
authors.lastname: Cao
authors.affiliation: School of Science, China Pharmaceutical University, Nanjing, China.
authors.forename: An
authors.initials: A
authors.lastname: Xiao
authors.affiliation: School of Science, China Pharmaceutical University, Nanjing, China.
authors.forename: Zhengyu
authors.initials: Z
authors.lastname: Yan
mesh_terms: D002244:Carbon / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D049449:Luminescence; D008165:Luminol / Q000737:chemistry*; D010316:Particle Size; D045663:Quantum Dots; D011899:Ranitidine / Q000032:analysis*; D013499:Surface Properties
chemical_list: D008165:Luminol; D002244:Carbon; D011899:Ranitidine; D006861:Hydrogen Peroxide
keywords: S,N co-doped carbon quantum dots; chemiluminescence; flow-injection; ranitidine