I want to make water-soluble CdSe/CdS quantum rods from Sigma-Aldrich products (900512, fluorescence 560nm, 5 mg/ml in hexane)
But I'm not familiar with the inorganic particle area, so a lot of questions in my head.
1. What does it mean that 'functional group: carboxylic acid' in Sigma aldrich explanation? Maybe it's related to the types of ligands...
2. Is the process hard which exchange the ligands of CdSe/CdS quantum dot/rods? I cannot imagine how hard to make
3. If easy, what water-soluble ligand is most famous and usually used?
https://www.sigmaaldrich.com/catalog/product/aldrich/900512
The ligand you choose should be based what you want to use the particles for, but I can tell you in my work I have made water soluble particles using p-MBA (para-Mercaptobenzoic acid [these make the particle water soluble, but the ligand itself is only weakly water soluble so if you want to do the exchange in water I don't recommend), Tiopronin (cheap, stable with little surface kinetics ( Article Ligand-Induced Structural Changes of Thiolate-Capped Gold Na...
) , water soluble, and no pesky pi-bonds), and thiolated PEG (lots of surface kinetics but a very simple chemical structure, though I find particles capped with PEG tend to ripen for days, so be careful there). Hope this helps.- Badges
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