2026-04-13T06:40:46Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1957842025-12-04T21:40:48Zcom_2072_1057col_2072_478917col_2072_478933

00925njm 22002777a 4500 dc Escudero Rodríguez, Carlos author El Hachemi, Zoubir author Perez Diaz, Ismael author Ribó i Trujillo, Josep M. author Crusats i Aliguer, Joaquim author 2023-03-22T11:48:50Z 2023-03-22T11:48:50Z 2007-05-07 2023-03-22T11:48:50Z Short-time surface contact of highly diluted 1-monostearoylglycerol (1-MSG) aqueous solutions with highly oriented pyrolitic graphite results in the deposition of an epitaxial monolayer that can be detected by atomic force microscopy operating in tapping mode at the graphite-air interface. The monolayer obtained with the racemic mixture is then compared to that obtained with one of the pure enantiomers. The analogous behavior found for aqueous solutions of rac-1-MSG and 3-sn-MSG implies a two-dimensional self-assembly process with chiral discrimination. The results suggest that the monolayer originates from species located at the surface of the deposition drop. They also indicate that the simple experimental procedure reported, or more elaborate Langmuir-Schaefer methods, could be the method of choice to prepare other monolayers of similar surfactants. Microscòpia de força atòmica Quiralitat Atomic force microscopy Chirality Formation of an epitaxial monolayer on graphite upon short-time surface contact with highly diluted aqueous solutions of 1-monostearoylglycerol