Nano Archive

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. and Dey , Sandip and Jain , Vimal. K and Dey , Gautam. K and 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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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
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:5837
Deposited By:JNCASR
Deposited On:11 Aug 2009 07:20
Last Modified:11 Aug 2009 07:20

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