Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong Province, China.
J Fluoresc. 2011 May;21(3):1131-5. doi: 10.1007/s10895-010-0789-8. Epub 2010 Dec 18.
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.
我们在醇溶液中简单地合成了 ZnO 量子点（QDs），并研究了 ZnO QDs 与溴百里酚蓝之间的相互作用。研究了 ZnO QDs 的结构、形态、尺寸和光谱性质。结果发现，ZnO QDs 具有球形纳米颗粒的晶体结构，平均直径约为 4.8nm。ZnO QDs 的激发和发射峰分别位于 346nm 和 520nm，这是在普通荧光光度计上获得的。通过使用硫酸奎宁作为参比试剂获得了 ZnO QDs 的量子产率。此外，ZnO QDs 的荧光可以被溴百里酚蓝猝灭，猝灭机制提出在动态猝灭模式下。
