By John Donegan, Yury Rakovich
In the final 20 years, semiconductor quantum dots—small colloidal nanoparticles—have garnered loads of medical curiosity as a result of their detailed homes. between nanomaterials, CdTe holds distinct technological significance because the simply recognized II–VI fabric that could shape traditional p–n junctions. This makes CdTe extremely important for the improvement of novel optoelectronic units akin to light-emitting diodes, sunlight cells, and lasers. additionally, the call for for water-compatible gentle emitters and the commonest organic buffers provide CdTe quantum dots fields a veritable aspect in biolabeling and bioimaging.
Cadmium Telluride Quantum Dots: Advances and Applications makes a speciality of CdTe quantum dots and addresses their synthesis, meeting, optical houses, and functions in biology and drugs. It makes for a truly informative examining for an individual taken with nanotechnology and also will profit these scientists who're trying to find a complete account at the present kingdom of quantum dot–related research.
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Extra info for Cadmium Telluride Quantum Dots: Advances and Applications
Nonlocal pseudopotential calculations for the electronic structure of eleven diamond and zinc-blende semiconductors, Phys. Rev. B, 14, pp. 556–582. 7. Cade, N. , and Lee, P. M. (1985). , 56, pp. 637–641. 8. , Cohen, M. , and Louie, S. G. (1994). Quasiparticle band structures of six II–VI compounds: ZnS, ZnSe, ZnTe, CdS, CdSe, and CdTe, Phys. Rev. B, 50, pp. 10780–10787. 9. Dunstan, D. , and Homewood, K. P. (1989). Hydrostatic pressure dependence of CdTe, Semicond. Sci. , 4, pp. 241–249. 10. Nicklas, J.
The formation of nanoparticles is a dynamic process, which is usually explained by an Ostwald ripening (OR) mechanism mainly consisting of the growth of larger particles at the expense of smaller ones present in an ensemble. The history of this method extends over 30 years beginning from an early work of Henglein’s group . For a comprehensive historical overview of progress made in the field during this time, the reader may find these recent publications useful [4–7]. , strong photoluminescence (PL) in the visible region.
Those thiols possessing optical isomerism, like L- and D-cysteine, L- and D-cysteinemethylester hydrochloride, bidentate R- and S-α-lipoic acids impart chiral structure to the CdTe surface [43,44]. The resulting NCs keep their optical activity even after ligand exchange for an achiral stabilizer (so-called chiral memory effect). 2 glutathione (GSH) mPEG-SH (n=7-6) Chemical structures of typical thiol capping ligands employed in the aqueous synthesis of CdTe NCs. Adapted with permission from ref.