Fluorescence Property of ZnO Nanoparticles and the Interaction with Bromothymol Blue |
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Authors: | Qiaoli Yue Jinmei Cheng Guang Li Ke Zhang Yanling Zhai Lei Wang Jifeng Liu |
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Institution: | (1) Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong Province, China; |
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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. |
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Keywords: | |
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