Quantum Dot Blueing and Blinking Enables Fluorescence Nanoscopy

Quantum Dot Blueing and Blinking Enables Fluorescence Nanoscopy
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DOI:
10.1021/nl103639f
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发表时间:
2011-01-01
期刊:
影响因子:
10.8
通讯作者:
Hell, Stefan W.
Hell, Stefan W.
中科院分区:
材料科学1区
文献类型:
--
作者:
Hoyer, Patrick;Staudt, Thorsten;Hell, Stefan W.

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我们展示了使用生物共轭的CdSe/ZnS量子点标记的细胞的超分辨率荧光成像。量子点芯的荧光变蓝有助于分离比衍射势垒更近的闪烁标记。高数量的连续发射的光子使得基态耗尽显微镜能够随后以单个点大小的分辨率(类似于12 nm)返回单个标记。用一个简单的网络摄像头进行纳米级成像是可行的。
We demonstrate superresolution fluorescence imaging of cells using bioconjugated CdSe/ZnS quantum dot markers. Fluorescence blueing of quantum dot cores facilitates separation of blinking markers residing closer than the diffraction barrier. The high number of successively emitted photons enables ground state depletion microscopy followed by individual marker return with a resolving power of the size of a single dot (similar to 12 nm). Nanoscale imaging is feasible with a simple webcam.