X-ray investigations of Langmuir-Blodgett multilayer films of side-chain liquid crystal copolymers |
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| Authors: | R. Geer S. Qadri R. Shashidhar A. F. Thibodeaux R. S. Duran |
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| Affiliation: | a Code 6900, Naval Research Laboratory, Washington, D.C., U.S.A.b Code 6600, Naval Research Laboratory, Washington, D.C., U.S.A.c Department of Chemistry, University of Florida, Gainesville, Florida, U.S.A. |
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| Abstract: | X-ray reflectivity studies on Langmuir-Blodgett multilayer films of side-chain liquid crystal polymers are reported. The films have a high degree of lamellar order. The layer periodicity is independent of the type of monolayer deposition, implying a reorientation of the side group mesogens following the deposition process. X-ray reflectivity from thin films displays subsidiary maxima permitting a quantitative measure of the change in side-chain density between multilayer and monolayer. A unit cell density profile is calculated for thick films assuming a symmetric unit cell. |
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