Water-soluble CdSe/ZnS quantum dots PL 480 nm--660 nm
| 【Numbering】BK211 | 【CAS】cas | ||
| 【Item No.】BK211-66-25 | 【specification】 | ||
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The water-soluble CdSe/ZnS quantum dot products produced by Suzhou Beike Nanotechnology Co., Ltd. are based on CdSe as the core, ZnS as the shell, and core/shell fluorescent nanomaterials coated with hydrophilic ligands. The average quantum yield is 70%, avoid direct sunlight during storage, and store in a sealed dark place at 4 degrees. Products with any wavelength from 480nm to 650nm can be customized for customers. This product has the characteristics of uniform particle size, broad absorption spectrum, narrow and symmetric emission spectrum, and high and stable fluorescence intensity.
The company currently provides carboxyl or amino, 3-mercaptopropionic acid (MPA) and PEG as coating agents
MPA coated products (carboxyl)
PEG coated products (carboxyl or amino)
A fluorescent sensor for the specific and selective detection of Bt has been developed by the CdSe/ZnS quantum dots applied by Huazhong Agricultural University and Guangxi University for Nationalities: In detection, when there is no detection target, only the signal of gQDs exists in the fluorescence signal analysis. Output, the hairpin DNA structure is in an unopened state; when the detection target exists, the target DNA sequence will hybridize with the hairpin DNA to achieve an open loop, rQDs@SiO2 is captured by MBs@SiO2@gQDs@SA, and the connected whole is due to fluorescence resonance Energy transfer (FRET), the fluorescence intensity (I620) of rQDs increases, and the fluorescence intensity (I540) of gQDs decreases. Data analysis shows that ratio fluorescence (I620/I540) exhibits better linearity and higher sensitivity in Bt detection. This article was published in the latest issue of Sensors and Actuators B in 2017 hosted by Elsevier. The magazine has an impact factor of 5.4 in 2016 and belongs to the first area of the JCR journal of the Chinese Academy of Sciences. This research provides a new technical guidance scheme for the production of high-efficiency and high-stability quantum dot fluorescence sensors.
| 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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| 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.The website pictures are from the Internet. The pictures are for reference only. Please take the real object as the standard. In case of infringement, please contact us to delete them immediately. |
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