2-(N,N-dimethylamino)ethylselenolates of cadmium(II): syntheses, structure of [Cd3(OAc)2(SeCH2CH2NMe2)4] and their use as single source precursors for the preparation of CdSe nanoparticles

Kedarnath, G. ; Dey, Sandip ; Jain, Vimal K. ; Dey, Gautam K. ; Varghese, Babu (2006) 2-(N,N-dimethylamino)ethylselenolates of cadmium(II): syntheses, structure of [Cd3(OAc)2(SeCH2CH2NMe2)4] and their use as single source precursors for the preparation of CdSe nanoparticles Polyhedron, 25 (12). pp. 2383-2391. ISSN 0277-5387

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.poly.2006.02.011

Abstract

The reaction of Cd(OAc)2 · 2H2O with NaSeCH2CH2NMe2 gave a homoleptic cadmium selenolate, [Cd(SeCH2CH2NMe2)2]. The latter complex, on treatment with Cd(OAc)2 · 2H2O, afforded [Cd3(OAc)2(SeCH2CH2NMe2)4], which was structurally characterized by single-crystal X-ray diffraction analysis. Pyrolysis of [Cd(SeCH2CH2NMe2)2] either in a mixture of hot hexadecylamine (HDA) and tri-n-octylphosphine oxide (TOPO) or in a furnace (180 and 200 °C) gave CdSe nanoparticles with average sizes varying between 3 and 21 nm. Both cubic and hexagonal phases of CdSe nanoparticles have been isolated under different experimental conditions. The CdSe nanoparticles were characterized by UV-Vis, photoluminescence, X-ray diffraction and electron microscopy. Time resolved luminescence measurements showed three different decay times for both band edge and trap state emissions.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Cadmium Selenolate; CdSe; Nanoparticles; Crystal Structure; TEM
ID Code:82307
Deposited On:10 Feb 2012 04:48
Last Modified:10 Feb 2012 04:48

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