title: Synthesis and transformation of linear adamantane assemblies inside carbon nanotubes.
abstract: We report the assembly and thermal transformation of linear diamondoid assemblies inside carbon nanotubes. Our calculations and observations indicate that these molecules undergo selective reactions within the narrow confining space of a carbon nanotube. Upon vacuum annealing of adamantane molecules encapsulated in a carbon nanotube, we observe a sharp Raman feature at 1857 cm(-1), which we interpret as a stretching mode of carbon chains formed by thermal conversion of adamantane inside a carbon nanotube. Introduction of pure hydrogen during thermal annealing, however, suppresses the formation of carbon chains and seems to keep adamantane intact.
authors.affiliation: Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya, 464-8602, Japan.
authors.forename: Jinying
authors.initials: J
authors.lastname: Zhang
authors.forename: Yanquan
authors.initials: Y
authors.lastname: Feng
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ishiwata
authors.forename: Yasumitsu
authors.initials: Y
authors.lastname: Miyata
authors.forename: Ryo
authors.initials: R
authors.lastname: Kitaura
authors.forename: Jeremy E P
authors.initials: JE
authors.lastname: Dahl
authors.forename: Robert M K
authors.initials: RM
authors.lastname: Carlson
authors.forename: Hisanori
authors.initials: H
authors.lastname: Shinohara
authors.forename: David
authors.initials: D
authors.lastname: Tománek
mesh_terms: D000218:Adamantane / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D000218:Adamantane