title: End-to-End Self-Assembly of Semiconductor Nanorods in Water by Using an Amphiphilic Surface Design.
abstract: One-dimensional (1D) self-assemblies of nanocrystals are of interest because of their vectorial and polymer-like dynamic properties. Herein, we report a simple method to prepare elongated assemblies of semiconductor nanorods (NRs) through end-to-end self-assembly. Short-chained water-soluble thiols were employed as surface ligands for CdSe NRs having a wurtzite crystal structure. The site-specific capping of NRs with these ligands rendered the surface of the NRs amphiphilic. The amphiphilic CdSe NRs self-assembled to form elongated wires by end-to-end attachment driven by the hydrophobic effect operating between uncapped NR ends. The end-to-end assembly technique was further applied to CdS NRs and CdSe tetrapods (TPs) with a wurtzite structure.
authors.affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Taniguchi
authors.affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.
authors.forename: Takao
authors.initials: T
authors.lastname: Takishita
authors.affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Kawai
authors.affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan. ntaku@ms.naist.jp.
authors.forename: Takuya
authors.identifier: http://orcid.org/0000-0002-5311-4146
authors.initials: T
authors.lastname: Nakashima
keywords: amphiphiles; gels; nanostructures; self-assembly; semiconductors