کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1795212 1023718 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel one-pot route for the synthesis of water-soluble cadmium selenide nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
A novel one-pot route for the synthesis of water-soluble cadmium selenide nanoparticles
چکیده انگلیسی

A novel, facile one-pot synthetic route to highly water dispersible and potentially biocompatible CdSe nanoparticles is reported. The monodispersed CdSe particles are passivated by cysteine, with water being the solvent. This route involves the reaction of selenium powder with sodium borohydride to produce selenide ions, followed by the addition of a cadmium salt and l-cysteine ethyl ester hydrochloride. The nanoparticles formed show quantum confinement fluorescing in the blue region. Fourier transform infrared spectroscopy study shows that CdSe nanoparticles are capped through mercapto group of the amino acid cysteine whilst its free amino and carboxylate groups make it amenable to bioconjugation establishing the possibility of using these as fluorescent biomarkers. High-resolution transmission electron spectroscopy images of these materials show well-defined, crystalline nanosized particles. Energy dispersive spectroscopy spectra confirm the presence of the corresponding elements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 310, Issue 13, 15 June 2008, Pages 3230–3234
نویسندگان
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