Effect of cadmium arachidate on molecular packing of zinc arachidate LB multilayers

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Effect of cadmium arachidate on molecular packing of zinc arachidate LB multilayers

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dc.contributor.author NAYAK, PK en_US
dc.contributor.author TALWAR, SS en_US
dc.contributor.author MAJOR, SS en_US
dc.contributor.author SRINIVASA, RS en_US
dc.date.accessioned 2009-03-18T09:10:48Z en_US
dc.date.accessioned 2011-11-25T19:20:17Z en_US
dc.date.accessioned 2011-12-26T13:07:25Z en_US
dc.date.accessioned 2011-12-27T05:55:27Z
dc.date.available 2009-03-18T09:10:48Z en_US
dc.date.available 2011-11-25T19:20:17Z en_US
dc.date.available 2011-12-26T13:07:25Z en_US
dc.date.available 2011-12-27T05:55:27Z
dc.date.issued 2006 en_US
dc.identifier.citation Colloids and Surfaces A: Physicochemical and Engineering Aspects 284-285, 187-191 en_US
dc.identifier.issn 0927-7757 en_US
dc.identifier.uri http://dx.doi.org/10.1016/j.colsurfa.2005.10.046 en_US
dc.identifier.uri http://hdl.handle.net/10054/968 en_US
dc.identifier.uri http://dspace.library.iitb.ac.in/xmlui/handle/10054/968 en_US
dc.description.abstract Mixed zinc arachidate–cadmium arachidate (ZnA–CdA) LB multilayers deposited from varying subphase compositions have been characterized by FTIR and X-ray reflection (XR). The COO− symmetric stretching band of CdA and changes in CH2 scissoring band were used to monitor the CdA content and nature of molecular packing in the mixed multilayers. The XR pattern of pure ZnA multilayer with bilayer period of not, vert, similar47 Å corresponds to a rotator phase like ‘loose packing’ in a hexagonal layer cell. However, the presence of low concentrations of cadmium ion in subphase (2–5 mol%) results in biphasic multilayers with bilayer periods of not, vert, similar47 and not, vert, similar51 Å. In the cadmium concentration range of 10–25 mol%, the multilayers exhibit sharp (0 0 l) peaks in XR pattern, corresponding to a single layered structure with alkyl chains tilted by not, vert, similar23° from layer-normal. Increase in the cadmium concentration (30–50 mol%) results in biphasic multilayers with bilayer periods of not, vert, similar52 and not, vert, similar55 Å, the later corresponding to a herringbone type packing of alkyl chains, perpendicular to the layer plane. At higher concentrations of CdA, the layered structure and molecular packing resemble that of pure CdA multilayer. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject zinc compounds en_US
dc.subject cadmium compounds en_US
dc.subject fourier transform infrared spectroscopy en_US
dc.subject monolayers en_US
dc.title Effect of cadmium arachidate on molecular packing of zinc arachidate LB multilayers en_US
dc.type Article en_US
dc.description.copyright © Elsevier en_US


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