title: Synthesis and micrometer-scale assembly of colloidal CdSe/CdS nanorods prepared by a seeded growth approach.
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.
authors.affiliation: NNL-National Nanotechnology Laboratory of CNR-INFM and IIT Research Unit, via per Arnesano, km 5, 73100 Lecce, Italy.
authors.forename: Luigi
authors.initials: L
authors.lastname: Carbone
authors.forename: Concetta
authors.initials: C
authors.lastname: Nobile
authors.forename: Milena
authors.initials: M
authors.lastname: De Giorgi
authors.forename: Fabio Della
authors.initials: FD
authors.lastname: Sala
authors.forename: Giovanni
authors.initials: G
authors.lastname: Morello
authors.forename: Pierpaolo
authors.initials: P
authors.lastname: Pompa
authors.forename: Martin
authors.initials: M
authors.lastname: Hytch
authors.forename: Etienne
authors.initials: E
authors.lastname: Snoeck
authors.forename: Angela
authors.initials: A
authors.lastname: Fiore
authors.forename: Isabella R
authors.initials: IR
authors.lastname: Franchini
authors.forename: Monica
authors.initials: M
authors.lastname: Nadasan
authors.forename: Albert F
authors.initials: AF
authors.lastname: Silvestre
authors.forename: Letizia
authors.initials: L
authors.lastname: Chiodo
authors.forename: Stefan
authors.initials: S
authors.lastname: Kudera
authors.forename: Roberto
authors.initials: R
authors.lastname: Cingolani
authors.forename: Roman
authors.initials: R
authors.lastname: Krahne
authors.forename: Liberato
authors.initials: L
authors.lastname: Manna
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D018036:Selenium Compounds / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013440:Sulfides / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D019187:Cadmium Compounds; D046911:Macromolecular Substances; D018036:Selenium Compounds; D013440:Sulfides; C034939:cadmium sulfide; C058667:cadmium selenide