ZnSe nanocrystals

Mn2+ CdS nanocrystals prepared by this method. A similar approach has been applied to colloidal Mn2+ -doped ZnSe nanocrystals (90) prepared via a singlesource precursor method (Section II.A), which showed evidence for both a disordered surface-bound or near-surface Mn2+ and an internal substitutional Mn2+. In both of these studies, this information was then applied in the analysis of energy-transfer processes involving the near-surface Mn2+ ions. 

Fig. 11.5. Fluorescence excitation and emission spectra of ZnSe nanocrystals showing the band edge emission. Adapted from [17].

Highly monodisperse ZnSe nanocrystallites (NCs) were deposited on free-standing porous silieon. Optical phonons confined in nearly spherical ZnSe QDs have been studied theoretically and experimentally. Spatially quantized phonon modes are considered in the framework of the continuum model. Raman scattering and absorption of far-infrared (FIR) radiation in ZnSe quantum dots have been studied. Experimental FTIR transmittance spectra of porous silicon free layers containing nearly spherical ZnSe nanocrystals show a broad band between the bulk TO and LO phonon frequencies. 

The thioglycolic acid (TGA)-capped ZnSe nanocrystals were synthesized and size-selected according to the standard procedure [1,2]. Electrochemical measurements were carried out in acetate buffer solution (pH 6) in a standard three-electrode cell. 

M. A. Hines, P. Guyot-Sionnest, Bright UV-Blue Luminescent Colloidal ZnSe Nanocrystals. The Journal of Physical Chemistry B 1998,102,3655-3657. 

S. A. Ivanov, A. Piryatinski, J. Nanda, S. Tretiak, K. R. Zavadil, W. O. Wallace, D. Werder, V. I. Klimov, Type-II Core/Shell CdS/ZnSe Nanocrystals Synthesis, Electronic Structures, and Spectroscopic Properties. Journal of the American Chemical Society 2007,129, 11708-11719. 

Myung N, Bae Y, Bard AJ (2003) Effect of surface passivation on the electrogenerated chemiluminescence of CdSe/ZnSe nanocrystals. Nano Lett 3(8) 1053-1055... 

N. Pradhan et ah, Efficient, stable, small, and water-soluble doped ZnSe nanocrystal emitters as non-cadmium biomedical labels. Nano Letters, 7(2), 312 17 (2007). 

N. Pradhan et ah, An alternative of CdSe nanocrystal emitters Pure and tunable impurity emissions in ZnSe nanocrystals, journal of the American Chemical Society, 127(50), 17586-17587 (2005). 

---