Analytical & Testing Center, Key Lab of Green Chemistry and Technology of MOE and College of Chemistry, Sichuan University, Chengdu, Sichuan 610064 (P.R. China), Fax: (+86) 28-8547-0818.
Chemistry. 2014 Jan 20;20(4):952-6. doi: 10.1002/chem.201303753. Epub 2013 Nov 26.
Monitoring the in situ growth of Mn-doped ZnS quantum dots is shown to be a route to selectively detect H2S, an important endogenously produced signalling molecule. The use of Mn(2+) as a dopant resulted in orange phosphorescence, making it possible to avoid the background fluorescence from biological surroundings that can occur at other wavelengths. The choice of ZnS QDs as the host material ensured selectivity, since only sulfide can precipitate Zn(2+) and Mn(2+) from aqueous solution.
研究表明，原位监测 Mn 掺杂的 ZnS 量子点的生长是选择性检测 H2S 的一种途径，H2S 是一种重要的内源性信号分子。使用 Mn(2+)作为掺杂剂会产生橙色磷光，从而可以避免在其他波长处可能发生的来自生物环境的背景荧光。选择 ZnS QDs 作为宿主材料可以确保选择性，因为只有硫化物才能从水溶液中沉淀出 Zn(2+)和 Mn(2+)。
