title: Fluorescence property of ZnO nanoparticles and the interaction with bromothymol blue.
abstract: We synthesized ZnO quantum dots (QDs) simply in alcoholic solution, and investigated the interaction between ZnO QDs and bromothymol blue. The structural, morphological, size and spectral properties of ZnO QDs were studied. It was found that ZnO QDs were spherical nanoparticles in the crystal structure, and the average diameter of ZnO QDs was about 4.8 nm. The excitation and emission peaks were located at 346 nm and 520 nm, respectively, which were obtained on a common fluorophotometer. The quantum yield of ZnO QDs was obtained by using quinine sulfate as a reference reagent. In addition, the fluorescence of ZnO QDs can be quenched by bromothymol blue, and the quenching mechanism was proposed in a dynamic quenching mode.
authors.affiliation: Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong Province, China.
authors.forename: Qiaoli
authors.initials: Q
authors.lastname: Yue
authors.forename: Jinmei
authors.initials: J
authors.lastname: Cheng
authors.forename: Guang
authors.initials: G
authors.lastname: Li
authors.forename: Ke
authors.initials: K
authors.lastname: Zhang
authors.forename: Yanling
authors.initials: Y
authors.lastname: Zhai
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Jifeng
authors.initials: J
authors.lastname: Liu
mesh_terms: D001979:Bromthymol Blue / Q000737:chemistry*; D005453:Fluorescence; D053758:Nanoparticles / Q000737:chemistry*; D045663:Quantum Dots; D015034:Zinc Oxide / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D015034:Zinc Oxide; D001979:Bromthymol Blue