Oil-soluble PbS/CdS quantum dots NIR emission light PL 800 nm - 1600 nm
| 【Numbering】BK119 | 【CAS】cas | ||
| 【Item No.】BK119-15-200 | 【specification】 | ||
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The oil-soluble PbS quantum dot products produced by Suzhou Beike Nanotechnology Co., Ltd. are coated with hydrophobic ligands. The average quantum yield is 50%. When storing, they should be stored away from direct sunlight and stored in a sealed dark place at 4 degrees. Customized production of products with different grams of any wavelength from 800nm to 1600nm. This product has the characteristics of uniform particle size, wide absorption spectrum, narrow and symmetrical emission spectrum, and high and stable fluorescence intensity. It can be used in electronic communications, liquid crystal displays, light-emitting diodes, solar cells, bioluminescent markers and other fields.
Using near-infrared two-zone fluorescence imaging technology to realize the imaging of brain blood vessels and gastrointestinal tract in living mice. In this work, the research group used a kind of PbS@CdS quantum dots (quantum yield 60%) that emits very strongly in the near-infrared second region (NIR-II, 1000-1700nm) and formed by double-layer coating. PbS@CdS@SiO2@F-127 nanoparticles with strong luminescence, and the nanoparticles also have very good pH stability and biocompatibility. The research team injected PbS@CdS@SiO2@F-127 nanoparticles into mice through the tail vein, and used a laser with a wavelength of 785nm (located in the near-infrared region) to excite the cerebral blood vessels of the mice to achieve microscopic imaging. The deep brain was observed The clear structure of blood vessels, the imaging depth can reach 950μm. At the same time, the research team also injected a small amount (80μg/kg) of PbS@CdS@SiO2@F-127 nanoparticles into mice, and used near-infrared two-zone fluorescence imaging technology to realize the imaging of the mouse gastrointestinal tract. S/N ratio of gastrointestinal structure. This article was published in the latest issue of Advanced Functional Materials in 2017 hosted by the German Chemical Association (Wiley). The magazine has an impact factor of 12.1 in 2016. It belongs to the first section of the JCR journal of the Chinese Academy of Sciences and is an authority in the field of nano-functional materials. This research provides a new technical guidance scheme for the production of high-efficiency and high-stability quantum dot fluorescent contrast agents.
| Warm tips: Suzhou Beike nano products are only used for scientific research, not for human body,different batches of products have different specifications and performance |
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