Structure of Langmuir-Blodgett Films of Star-Shaped Oligomeric Discogens

Autor:	Peter Schuhmacher, Paul A. Heiney, Jack Yitzhak Josefowicz, Nicholas C. Maliszewskyj, Helmut Ringsdorf, Thomas Plesnivy
Rok vydání:	1995
Předmět:	Diffraction Conformational change Chemistry Mesogen Triphenylene Surfaces and Interfaces Condensed Matter Physics Langmuir–Blodgett film Crystallography chemistry.chemical_compound Liquid crystal Electrochemistry Molecule General Materials Science Spectroscopy Deposition (law)
Zdroj:	Langmuir. 11:1666-1674
ISSN:	1520-5827 0743-7463
Popis:	We have used atomic force microscopy (AFM) and X-ray diffraction (XRD) to study ultrathin films of star-shaped oligomeric molecules with mesogenic triphenylene subunits. At the air-water interface, the molecules undergo a conformational change such that the peripheral triphenylene substituents sit perpendicular to, and the central core sits parallel to, the interface. AFM measurements indicate that the conformation of the molecules is preserved upon transfer to a solid substrate and that the triphenylene subunits are organized in columns with average alignment along the direction of deposition. XRD shows that there is a 40 o distribution of column orientations, centered on the direction of deposition
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3abd1e1c214d2ed4c6ee583ed7f8ea64 https://doi.org/10.1021/la00005a040 Zobrazit plný text záznamu