Two Dimensional Crystals and Nanostructured Materials

Autor:	C. J. Eckhardt
Rok vydání:	1998
Předmět:	chemistry.chemical_compound Materials science chemistry Chemical engineering Hexagonal crystal system Nanostructured materials Amphiphile Monolayer Molecule Nonlinear optics Racemic mixture Nanotechnology Derivative (chemistry)
DOI:	10.21236/ada358135
Popis:	New organic amphiphiles were designed with cross-sectional shapes designed for the formation of crystalline monolayers that would conform to heretofore undiscovered two dimensional packings. The viability of the molecules was tested by atom-atom potential calculations. Those systems that were deemed promising for formation of new crystalline monolayers were subsequently synthesized thereby creating new types of amphiphiles. Further examination of the crystalline monolayers was provided by determination of surface istherms and atomic force microscopy. A racemic mixture of a tetracyclic alcohol was shown to undergo chiral phase separation upon transfer to a mica substrate. A trinorborance derivative showed within experimental error, the first static hexagonal packing of a monolayer. Molecules based on the tetracyclic alcohol exhibited surface pressures approaching that of water. These films do not appear to collapse at ambient temperature but demonstrate a hysteretic return to nearly the original low pressure areas after collapse.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::866579449417ff30218d8b270f2b9d60 https://doi.org/10.21236/ada358135 Zobrazit plný text záznamu