Thermodynamic properties of Langmuir layers created of monoimide perylenetetracarboxylic acid derivatives
| Autor: | Tomasz Martyński, Robert Hertmanowski, Emilia Piosik |
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| Rok vydání: | 2016 |
| Předmět: |
Range (particle radiation)
Langmuir technology industry and agriculture Analytical chemistry Perylene derivatives 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Mole fraction Surface pressure 01 natural sciences Fluorescence 0104 chemical sciences chemistry.chemical_compound chemistry Arachidic acid Molecule Organic chemistry lipids (amino acids peptides and proteins) General Materials Science 0210 nano-technology Instrumentation |
| Zdroj: | Phase Transitions. 89:419-424 |
| ISSN: | 1029-0338 0141-1594 |
| DOI: | 10.1080/01411594.2015.1127922 |
| Popis: | Langmuir films formed of some fluorescent dyes, 3,4-bis-pentyl ester of 9,10-N-(n-pentylimide)-perylenetetracarboxylic acid, as well as their mixtures with arachidic acid, were studied. Surface pressure versus mean molecular area isotherms for Langmuir films were reordered and the alignment of molecules at the air–water interface was estimated. The isotherms show that the dye molecules do not lie flat onto the water surface but are tilted with respect to the normal to the interface. The surface pressure–area isotherms of Langmuir films formed from the dye/arachidic acid mixture provide evidence for phase separation of the components within almost the entire range of mole fractions. A repulsive interaction between molecules was observed in all two components of Langmuir films. |
| Databáze: | OpenAIRE |
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