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Assembly of CdS Nanoparticles in Patterned Structures by a Novel Ion-Entrapment Process in Thermally Evaporated Fatty Acid Films

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Abstract:

The formation of cadmium sulfide nanoparticle assemblies in a patterned manner on suitable substrates is described. The protocol for realizing such structures comprises the following steps. In the first step, patterned films of a fatty acid are thermally evaporated onto solid supports using suitable masks (e.g., a transmission electron microscope grid). Thereafter, the fatty acid film is immersed in cadmium sulfate solution and Cd2+ ions entrapped in the lipid matrix by electrostatic complexation with the carboxylate ions of the fatty acid molecules. The final step involves reaction of the entrapped Cd2+ ions with Na2S, leading to the in situ generation of cadmium sulfide nanoparticles within the patterned lipid matrix. This approach shows promise for generating patterned nanoparticle assemblies of different chemical compositions.

Keywords: CDS NANOPARTICLES; ION-ENTRAPMENT PROCESS; PATTERNED NANOPARTICLE ASSEMBLIES

Document Type: Communications

DOI: http://dx.doi.org/10.1166/jnn.2001.046

Affiliations: Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India

Publication date: September 1, 2001

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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