title: UV-light induced fabrication of CdCl2 nanotubes through CdSe/Te nanocrystals based on dimension and configuration control.
abstract: Since the discovery of WS2 nanotubes in 1992 ( Nature 1992, 360, 444), there have been significant research efforts to synthesize nanotubes and fullerene-like hollow nanoparticles (HNPs) of inorganic materials ( Nat. Nanotechnol. 2006, 1, 103) due to their potential applications as solid lubrications ( J. Mater. Chem. 2005, 15, 1782), chemical sensing ( Adv. Funct. Mater. 2006, 16, 371), drug delivering ( J. Am. Chem. Soc. 2005, 127, 7316), catalysis ( Adv. Mater. 2006, 18, 2561), or quantum harvesting ( Acc. Chem. Res. 2006, 39, 239). Nanotubes can be produced either by rolling up directly from layer compounds ( Nature 2001, 410, 168) or through other mechanisms ( Adv. Mater. 2004, 16, 1497) such as template growth ( Nature 2003, 422, 599) and decomposition ( J. Am. Chem. Soc. 2001, 123, 4841). The Kirkendall effect, a classical phenomenon in metallurgy ( Trans. AIME 1947, 171, 130), was recently exploited to fabricate hollow 0-D nanocrystals ( Science 2004, 304, 711) as well as 1-D nanotubes ( Nat. Mater. 2006, 5, 627). Although the dimension of resulting hollow nanostructures depends on precursors, the hollow nanomaterials can also be organized into various dimensional nanostructures spontaneously or induced by an external field. In this letter, we report, for the first time, the UV-light induced fabrication of the ends-closed 1-D CdCl2 nanotubes from 0-D CdSe solid nanocrystals through the Kirkendall effect and the head-to-end assembled process. Our results demonstrate the possibility to control the dimension (0-D to 1-D) and the configuration (solid to hollow) of nanostructures simultaneously and have implications in fabricating hollow nano-objects from zero-dimensional to multidimensional.
authors.affiliation: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Anhui Province, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zeng
authors.forename: Chi
authors.initials: C
authors.lastname: Liu
authors.forename: Jianliu
authors.initials: J
authors.lastname: Huang
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Wang
authors.forename: Shuyuan
authors.initials: S
authors.lastname: Zhang
authors.forename: Gongpu
authors.initials: G
authors.lastname: Li
authors.forename: Jianguo
authors.initials: J
authors.lastname: Hou
mesh_terms: D019256:Cadmium Chloride / Q000737:chemistry* / Q000528:radiation effects; D019187:Cadmium Compounds / Q000737:chemistry* / Q000528:radiation effects; D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry / Q000528:radiation effects; D008422:Materials Testing; D008968:Molecular Conformation / Q000528:radiation effects; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D018036:Selenium Compounds / Q000737:chemistry* / Q000528:radiation effects; D013499:Surface Properties / Q000528:radiation effects; D013691:Tellurium / Q000737:chemistry* / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D019187:Cadmium Compounds; D046911:Macromolecular Substances; D018036:Selenium Compounds; C058667:cadmium selenide; D019256:Cadmium Chloride; D013691:Tellurium; C028337:cadmium telluride