Aqueous, protein-driven synthesis of transition metal-doped ZnS immuno-quantum dots.
Aqueous, protein-driven synthesis of transition metal-doped ZnS immuno-quantum dots.
复制标题
DOI:
10.1021/nn2024896
复制
发表时间:
2011-10-25
期刊:
影响因子:
17.1
通讯作者:
Baneyx F
中科院分区:
文献类型:
--
作者:
Zhou W;Baneyx F
The intentional introduction of transition metal impurities in semiconductor nanocrystals is an attractive approach for tuning quantum dot (QD) emission over a wide range of wavelengths. However, the development of effective doping strategies can be challenging, especially if one simultaneously requires a low toxicity crystalline core, a functional protein shell, and a “green”, single-step synthesis process. Here, we describe a simple and environmentally friendly route for the biofabrication of Cu-doped (blue-green) or Mn-doped (yellow-orange) ZnS nanocrystals surrounded by an antibody-binding protein shell. The ZnS:Mn hybrid particles obtained with this method exhibited a 60% enhancement in maximum photoluminescence intensity relative to undoped nanocrystals and have a hydrodynamic diameter inferior to 10 nm. They can be stored for months at 4°C, are stable over a physiological range of pH and salt concentrations, can be decorated with variable amounts of antibodies by direct mixing, and hold promise for biosensing and imaging applications.
登录
查看更多内容
影响因子:
15
作者:
Zhou, Weibin;Schwartz, Daniel T.;Baneyx, Francois
通讯作者:
Baneyx, Francois
影响因子:
4
作者:
KHOSRAVI, AA;KUNDU, M;KULKARNI, SK
通讯作者:
KULKARNI, SK
影响因子:
56.9
作者:
Chan, WCW;Nie, SM
通讯作者:
Nie, SM
影响因子:
3.5
作者:
Manzoor, Koyakutty;Johny, Seby;Nair, Shantikumar
通讯作者:
Nair, Shantikumar
影响因子:
11.4
作者:
Lin, Pinpin;Chen, Jein-Wen;Yang, Raymond S. H.
通讯作者:
Yang, Raymond S. H.