Langmuir−Blodgett Mono- and Multilayers of Rodlike Oligo(cyclohexylidene) Derivatives Bearing an Oxime Headgroup
| Autor: | Jan W. Zwikker, E.J.R. Sudhölter, Frans J. Hoogesteger, Jan Kroon, T.J.M. de Bruin, C.H.M. Marée, Nora Veldman, Leonardus W. Jenneskens, E. ten Grotenhuis, Anthony L. Spek |
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| Rok vydání: | 1996 |
| Předmět: |
chemistry.chemical_classification
Langmuir Silicon Double bond chemistry.chemical_element Surfaces and Interfaces Condensed Matter Physics Oxime Oligomer Langmuir–Blodgett film Elastic recoil detection chemistry.chemical_compound Crystallography chemistry Monolayer Electrochemistry Organic chemistry General Materials Science Spectroscopy |
| Zdroj: | Langmuir. 12:4760-4767 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | The Langmuir film-forming properties of rodlike oligo(cyclohexylidene) oximes and derivatives 1(n)-8 have been studied. It is shown that subtle structural modifications of their hydrocarbon framework, such as end-functionalization by a tert-butyl group or an n-alkyl group or (selective) hydrogenation of double bonds, markedly affect their propensity toward Langmuir monolayer formation and in particular monolayer film stability. Mean molecular areas (π-A isotherms) show that the oximes orient nearly perpendicular on the air-water interface. Film transfer of 5(2) onto moderately hydrophilic silicon (100) wafers gave predominantly Z-type deposition ; for a monolayer a tilt angle of 26° was derived (atomic force microscopy). The quantitative elemental composition ofa transferred multilayer assembly of 5(2) was determined using elastic recoil detection. |
| Databáze: | OpenAIRE |
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