Abstract

A series of POMs/CdTe nanocomposites were successfully synthesized by the combination of CdTe quantum dots (QDs) with different polyoxometalates (POMs) PW₁₂, PMo₁₂, SiW₁₂, and SiW₉. These nanocomposites based on CdTe QDs exhibited tunable photoluminescence properties due to the influence of the POMs. In particular, PW₁₂/CdTe showed obvious emission shifts from a wavelength of 666 nm to 672 nm by control of the CdTe:PW₁₂ molar ratio. Due to the electron acceptance ability of POMs, a new method was found to control the light emission from QDs. Furthermore, the strategy reported in this work can be applied to bioimaging, fluorescent probes, light-emitting diodes, and photodetectors.

摘要

_{通过CdTe量子点(QDs)与不同的多金属氧酸盐(POMs)PW 12}、PMo ₁₂、SiW ₁₂和SiW ₉的结合，成功合成了一系列POMs/CdTe纳米复合材料。由于 POM 的影响，这些基于 CdTe QD 的纳米复合材料表现出可调谐的光致发光特性。特别地，通过控制CdTe:PW ₁₂摩尔比，PW ₁₂ /CdTe显示出从666nm到672nm波长的明显发射偏移。由于 POM 的电子接受能力，人们发现了一种控制 QD 发光的新方法。此外，这项工作中报告的策略可应用于生物成像、荧光探针、发光二极管和光电探测器。