Nanocrystals monodispersed

In solution, nanocrystals are ideal spectroscopic samples however many of dieir most important properties can only be realized when diey are assembled into more complex stmctures. One way of building complex stmctures is to rely on die inlierent tendency for monodisperse spheres to crystallize. Figure C2.17.3 shows die hexagonal close-... 

Korgel, B. A. and Monbouquette, H. G. (1996). Synthesis of Size-Monodisperse CdS Nanocrystals Using Phosphatidylcholine Vesicles as True Reaction Compartments. /. Phys. Chem., 100, 346-351. 

Using a similar procedure, based on the thermal decomposition of a metal-surfactant complex followed by mild oxidation, we synthesized highly crystalline and monodisperse nanocrystals of cobalt ferrite (CoFc204), manganese ferrite (MnFe204) MnO, and Ni [5]. 

The primary goal of the researchers has been to produce Q-dots possessing all of the attributes of the Q-dots prepared using liquid-phase synthetic methods (that is adjustability of the nanocrystal identity and diameter and size monodispersity) and also the technological utility of Q-dots prepared by MBE (specifically, the deposition of nanocrystals with a defined orientation and an electrical output contact). It was shown that the E/C-synthesized 5-CuI and CdS Q-dots were indeed epitaxial with narrow size distribution and strong photoluminescence tunable by the particle size. Qne of the advantages of the E/C method is that it can be made size selective. The key point is that the size as well as the size dispersion of product nanoparticles are directed actually by the corresponding properties of the metal nanoparticles therefore the first deposition step assumes special importance. 

Peng ZA, Peng X (2001) Nearly monodisperse and shape-controlled CdSe nanocrystals via alternative routes Nucleation and growth. J Am Chem Soc 124 3343-3353... 

Murray, C. B., Kagan, C. R. and Bawendi, M. G. (2000) Synthesis and characterization of monodisperse nanocrystals and close-packed nanocrystal assemblies. Anna. Rev. Mater. Sci., 30, 545-610. 

Talapin, D. V., Rogach, A. L, Kornowski, A., Haase, M. and Weller, H. (2001) Highly luminescent monodisperse CdSe and CdSe/ZnS nanocrystals synthesized in a hexadecylamine-trioctylphosphine oxide-trioctylphospine mixture. Nano Lett., 1, 207-211. 

N. M. and Hyeon, T. (2004) Ultra-large-scale syntheses of monodisperse nanocrystals. Nature Materials, 3 (12), 891-895. 

Yu, W.W., Falkner, J.C., Yavuz, C.T. and Colvin, V.L. (2004) Synthesis of monodisperse iron oxide nanocrystals by thermal decomposition of iron carboxylate salts. Chemical Communications, (20), 2306-2307. 

Chiu, W.S., Radiman, S., Abdullah, M.H., Khiew, P.S., Huang, N.M. and Abd-Shukor, R. (2007) One pot synthesis of monodisperse Fe304 nanocrystals by pyrolysis reaction of organometallic compounds. Materials Chemistry and Physics, 106 (2-3), 231-235. 

Khagram, P., Tomson, F., Brydson, R.M.D. and Crook, R. (2010) Synthesis ofhigh quality monodisperse nickel oxide nanocrystals. Journal of Physics Conference Series, 245, 012063. 

Li, J. J. Wang, Y. A. Guo, W. Keay, J. C. Mishima, T. D. Johnson, M. B. Peng, X. 2003. Large-scale synthesis of nearly monodisperse CdSe/CdS core/shell nanocrystals using air-stable reagents via successive ion layer adsorption and reaction. J.Am. Chem. Soc. 125 12567-12575. 

Sun, S. Murray, C. B. 1999. Synthesis of monodisperse cobalt nanocrystals and their assembly into magnetic superlattices. J. Appl. Phys. 85 4325 1330. 

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