Make Quantum Dots (Cadmium Selenide Type)

In this video we make cadmium selenide quantum dots.

WARNING: This experiment uses toxic and carcinogenic reagents and directly handles extremely hot liquids. Gloves, protective clothing and a fume hood should be used. This should be performed by, or under the direct supervision of, an experienced chemist.

Make trioctylphosphine selenide solution: Combine 30mg of pure selenium powder, 5mL of 1-octadecene and 0.4mL of trioctylphosphine. Gently heat it until all the selenium dissolves into a clear liquid. Once it's ready, take off heating, seal it and let it cool.

Make quantum dots: Combine 13mg of cadmium oxide, 0.6mL of oleic acid and 10mL of 1-octadecene. Heat the mixture until the cadmium oxide completely dissolves to form cadmium oleate. After the cadmium oxide dissolves keep heating until the mixture hits 225 degrees celsius. ... https://www.youtube.com/watch?v=bNuoYm7Su4o