Inorganic-organic hybrids by exfoliation of MoS2

被引:29
作者
Powell, AV [1 ]
Kosidowski, L [1 ]
McDowall, A [1 ]
机构
[1] Heriot Watt Univ, Dept Chem, Edinburgh EH14 4AS, Midlothian, Scotland
关键词
D O I
10.1039/b007545k
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A range of electron-rich organic molecules has been intercalated into MoS2 by the method of exfoliation-reflocculation. Intercalation produces an expansion of the lattice in a direction perpendicular to the dichalcogenide layers, the magnitude of which suggests that in the majority of cases, the guest adopts an orientation in which the molecular plane is parallel to the dichalcogenide layers. This is further supported by the suppression of the majority of the vibrational modes in the inelastic neutron scattering spectrum. The introduction of polar substituents to naphthalene favours a perpendicular orientation of the guest in the interlayer space, permitting a higher degree of organic incorporation. The electron transport properties of MoS2 are modified by intercalation and materials containing naphthalene and alkylated derivatives exhibit anomalous behaviour at low temperatures. EXAFS data provide evidence for a structural distortion, involving the formation of cation chains, in the naphthalene intercalate.
引用
收藏
页码:1086 / 1091
页数:6
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