Nano Archive

Synthesis and micrometer-scale assembly of colloidal CdSe/CdS nanorods prepared by a seeded growth approach

Carbone, Luigi and Nobile, Concetta and De Giorg, Milena and Sala, Fabio Delia and Morello, Giovanni and Pompa, Pierpaolo and Hytch, Martin and Snoeck, Etienne and Fiore, Angela and Franchini, Isabella R. and Nadasan, Monica and Silvestre, Albert F. and Chiodo, Letizia and Kudera, Stefan and Cingolani, Roberto and Krahne, Roman and Manna, Liberato (2007) Synthesis and micrometer-scale assembly of colloidal CdSe/CdS nanorods prepared by a seeded growth approach. NANO LETTERS, 7 (10). pp. 2942-2950.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl0717661

Abstract

Key limitations of the colloidal semiconductor nanorods that have been reported so far are a significant distribution of lengths and diameters as well as the presence of irregular shapes produced by the current synthetic routes and, finally, the poor ability to fabricate large areas of oriented nanorod arrays. Here, we report a seeded-growth approach to the synthesis of asymmetric core-shell CdSe/CdS nanorods with regular shapes and narrow distributions of rod diameters and lengths, the latter being easily tunable up to 150 nm. These rods are highly fluorescent and show linearly polarized emission, whereby the emission energy depends mainly on the core diameter. We demonstrate their lateral alignment as well as their vertical self-alignment on substrates up to areas of several square micrometers.

Item Type:Article
Uncontrolled Keywords:ELECTRIC-FIELD; LIQUID-CRYSTALS; NANOCRYSTALS; SUPERLATTICES; ALIGNMENT; SOLIDS
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
ID Code:6178
Deposited By:IoN
Deposited On:11 Sep 2009 11:51
Last Modified:11 Sep 2009 11:51

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