Structure of the Ethylammonium Nitrate Surface: An X-ray Reflectivity and Vibrational Sum Frequency Spectroscopy Study
2010 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 26, no 11, 8282-8288 p.Article in journal (Refereed) Published
X-ray reflectivity and vibrational sum frequency spectroscopy are used to probe the structure of the ethylammonium nitrate (EAN)-air interface. X-ray reflectivity reveals that the EAN-air interface is structured and consists of alternating nonpolar and charged layers that extend 31 angstrom into the bulk. Vibrational sum frequency spectroscopy reveals interfacial cations have their ethyl moieties oriented toward air, with the CH3C3 axis positioned similar to 36.5 degrees from interface normal. This structure is invariant between 15 and 51 degrees C. On account of its molecular symmetry, the orientation of the nitrate anion cannot be determined with certainty.
Place, publisher, year, edition, pages
2010. Vol. 26, no 11, 8282-8288 p.
TEMPERATURE IONIC LIQUIDS, AIR-WATER-INTERFACE, MOLECULAR-ORIENTATION, MICELLE FORMATION, STRETCHING MODES, FUSED SALT, GENERATION, SOLVENTS, ALKYL, SPONGE
IdentifiersURN: urn:nbn:se:kth:diva-12925DOI: 10.1021/la904697gISI: 000277928100085ScopusID: 2-s2.0-77954550730OAI: oai:DiVA.org:kth-12925DiVA: diva2:319647
QC 201006282010-05-192010-05-192010-12-14Bibliographically approved