Publications by authors named "Angeles Touceda-Varela"
Article Synopsis
- The manual grinding of copper(II) chloride, 2,2'-bipyridine, and hydrophobic cadmium selenide quantum dots leads to the creation of a quick and selective fluorescence sensor.
- This sensor is capable of detecting very small amounts (nanogram levels) of solid cyanide salts that can be seen without special equipment.
- Additionally, when using a fluorescence detector, it can identify sodium cyanide (NaCN) concentrations as low as 100 parts per million in sand.
We demonstrate that QDs coated with nitrilotriacetic acid (NTA) bound to Ni (2+) can be used to reversibly and selectively bind, purify, and fluorescently label His 6-tagged (N-terminal) glutathione S-transferase (GST) in one step with retention of enzymatic activity. We find binding to be less effective in the absence of the His 6-tag or Ni (2+) ions.
View Article and Find Full Text PDFThe ability of 2,2'-bipyridine-bound copper(ii) ions to quench the photoluminescence of hydrophobic CdSe quantum dots is used to create a novel, selective turn-on fluorescence cyanide sensor.
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