Chain length dependence of molecular ordering in LB films of amphotropic phthalocyanines
| Autor: | Richard H. Poynter, David A. Slater, Michael A. Chesters, Michael J. Cook, Kevin Welford, Jim McMurdo |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
medicine.diagnostic_test
Metals and Alloys Analytical chemistry Substituent Infrared spectroscopy Surfaces and Interfaces Substrate (electronics) Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Spectrophotometry Monolayer Materials Chemistry medicine Molecule Thin film Absorption (chemistry) |
| Zdroj: | Thin Solid Films. 243:346-350 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/0040-6090(93)04073-2 |
| Popis: | Langmuir-Blodgett films of two amphiphilic liquid crystalline phthalocyanines, differing in the lengths of their substituent chains, have been prepared on various substrates. Monolayers were obtained at an air:water interface. π− A isotherms reveal very satisfactory stability of the compressed monolayers were transferred Y-type by are approximately perpendicular to the water surface. The compressed monolayers were transferred Y-type by vertical motion of the substrate. Polarized visible region spectrophotometry, transmission infrared spectroscopy and reflection absorption infrared spectroscopy reveal ordering within the films. Two distinct types of molecular packing are observed depending on the length of the hydrophobic chain. Both undergo significant reorganization at elevated temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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