State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials Science, China University of Petroleum-Beijing, Beijing, 102249, China.
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
Chem Commun (Camb). 2020 Jun 18;56(49):6648-6651. doi: 10.1039/d0cc02131h.
Here, two dimensional Nb2C quantum dots with green fluorescence were fabricated for the first time with a quantum yield (QY) of up to 19%, the highest reported for Nb2C dots so far with good photostability and pH stability. The S,N doping on Nb2C was considered to be the main reason for the enhanced high QY of the Nb2C dots and was proved by the density functional theory (DFT) calculations. It was demonstrated that the fluorescent probe could be utilized effectively for 3D brain organoid labeling and thus has huge prospects in biological sensing.
在这里，首次制备出具有绿色荧光的二维 Nb2C 量子点，量子产率（QY）高达 19%，这是迄今为止报道的 Nb2C 点的最高值，具有良好的光稳定性和 pH 稳定性。认为 Nb2C 上的 S、N 掺杂是提高 Nb2C 点高 QY 的主要原因，并通过密度泛函理论（DFT）计算得到了证明。实验证明，荧光探针可有效用于 3D 脑类器官标记，因此在生物传感方面具有广阔的前景。
