CTAB 封端的 Mn 掺杂 ZnS 量子点和无标记适体用于室温磷光检测汞离子。
CTAB-capped Mn-doped ZnS quantum dots and label-free aptamer for room-temperature phosphorescence detection of mercury ions.
机构信息
Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, School of Chemistry, Southwest University, Chongqing, PR China.
出版信息
Analyst. 2012 Oct 21;137(20):4651-3. doi: 10.1039/c2an35777a.
A new room-temperature phosphorescence (RTP) mercury ions sensor has been developed based on cetyltrimethylammonium bromide-capped Mn-doped ZnS quantum dots (CTAB/Mn-ZnS QDs) and label-free thymine (T)-rich aptamer. The formed T-Hg(2+)-T dsDNA can linearly quench the RTP of Mn-ZnS QDs through electron transfer and aggregation effect, and give a detection limit of 1.5 nM.
一种基于十六烷基三甲基溴化铵（CTAB）包裹的锰掺杂硫化锌量子点（CTAB/Mn-ZnS QDs）和无标记胸腺嘧啶（T）丰富的适配体的新型室温磷光（RTP）汞离子传感器已经被开发出来。形成的 T-Hg(2+)-T 双链 DNA 可以通过电子转移和聚集效应线性猝灭 Mn-ZnS QDs 的 RTP，并给出 1.5 nM 的检测限。
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