Structure of the Ethylammonium Nitrate Surface: An X-ray Reflectivity and Vibrational Sum Frequency Spectroscopy Study
vibrational sum frequency
air interface
spectroscopy
Nitrates
ethylammonium nitrate (EAN)
X-ray reflectivity
02 engineering and technology
Reflectivity
01 natural sciences
0104 chemical sciences
Symmetry
X-ray spectroscopy
Vibrational states
0210 nano-technology
Molecular structure
DOI:
10.1021/la904697g
Publication Date:
2010-03-19T19:37:06Z
AUTHORS (6)
ABSTRACT
X-ray reflectivity and vibrational sum frequency spectroscopy are used to probe the structure of ethylammonium nitrate (EAN)−air interface. reveals that EAN−air interface is structured consists alternating nonpolar charged layers extend 31 Å into bulk. Vibrational interfacial cations have their ethyl moieties oriented toward air, with CH3 C3 axis positioned ∼36.5° from normal. This invariant between 15 51 °C. On account its molecular symmetry, orientation anion cannot be determined certainty.
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