Growth of cubic crystals of cobalt-hexacyanoferrate under the octadecyl amine monolayer

Choudhury, Sipra ; Dey, G. K. ; Yakhmi, J. V. (2003) Growth of cubic crystals of cobalt-hexacyanoferrate under the octadecyl amine monolayer Journal of Crystal Growth, 258 (1-2). pp. 197-203. ISSN 0022-0248

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0022-0248(03)01513-6

Abstract

Highly oriented cubic crystals of Cobalt (II)-hexacyanoferrate (III) (Co-hcf) are formed at the air-water interface under the compressed Langmuir monolayer of octadecyl amine (ODA) when we react K3Fe(CN)6 solution with cobalt (II) chloride solution in the sub-phase, while no crystals are formed at the air-water interface without the ODA monolayer. X-ray diffraction and electron diffraction studies indicate that these Co-hcf crystals are oriented with their {1 0 0} plane parallel to the monolayer. Transmission electron microscopy and atomic force microscopy reveal that cubic crystals with sides of 50-300 nm are initially formed, which grow further with time and coalesce to form a thin film. Cyclic voltammetry on those Co-hcf films, transferred on gold coated glass, indicates the presence of a surface couple corresponding to Fe(CN)63-/Fe(CN)64-system. Present study gives an insight into the in situ growth behaviour of crystals and has implications in the design and development of advanced materials for devices.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:A1. Air-water Interface; A1. Atomic Force Microscopy; A1. Crystal Structure; A1. Template; A1. X-ray Diffraction; B1. Inorganic Compounds
ID Code:82468
Deposited On:10 Feb 2012 15:34
Last Modified:10 Feb 2012 15:34

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