Structure of the ethylammonium nitrate surface: An X-ray reflectivity and vibrational sum frequency spectroscopy study

Petru Niga; Deborah Wakeham; Andrew Nelson; Gregory G. Warr; Mark W. Rutland; Rob Atkin

doi:10.1021/la904697g

Structure of the ethylammonium nitrate surface: An X-ray reflectivity and vibrational sum frequency spectroscopy study

Petru Niga, Deborah Wakeham, Andrew Nelson, Gregory G. Warr, Mark W. Rutland, Rob Atkin

Research output: Contribution to journal › Article › peer-review

63 Citations (Scopus)

Abstract

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 Å into the bulk. Vibrational sum frequency spectroscopy reveals interfacial cations have their ethyl moieties oriented toward air, with the CH₃ C₃ xis positioned ∼36.5° from interface normal. This structure is invariant between. 1.5 and 51°C. On account of its molecular symmetry, the orientation of the nitrate anion cannot be determined with certainty.

Original language	English
Pages (from-to)	8282-8288
Number of pages	7
Journal	Langmuir
Volume	26
Issue number	11
DOIs	https://doi.org/10.1021/la904697g
Publication status	Published - 1 Jun 2010
Externally published	Yes

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abstract = "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 {\AA} into the bulk. Vibrational sum frequency spectroscopy reveals interfacial cations have their ethyl moieties oriented toward air, with the CH3 C3 xis positioned ∼36.5° from interface normal. This structure is invariant between. 1.5 and 51°C. On account of its molecular symmetry, the orientation of the nitrate anion cannot be determined with certainty.",

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AU - Wakeham, Deborah

AU - Nelson, Andrew

AU - Warr, Gregory G.

AU - Rutland, Mark W.

AU - Atkin, Rob

PY - 2010/6/1

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N2 - 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 Å into the bulk. Vibrational sum frequency spectroscopy reveals interfacial cations have their ethyl moieties oriented toward air, with the CH3 C3 xis positioned ∼36.5° from interface normal. This structure is invariant between. 1.5 and 51°C. On account of its molecular symmetry, the orientation of the nitrate anion cannot be determined with certainty.

AB - 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 Å into the bulk. Vibrational sum frequency spectroscopy reveals interfacial cations have their ethyl moieties oriented toward air, with the CH3 C3 xis positioned ∼36.5° from interface normal. This structure is invariant between. 1.5 and 51°C. On account of its molecular symmetry, the orientation of the nitrate anion cannot be determined with certainty.

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Structure of the ethylammonium nitrate surface: An X-ray reflectivity and vibrational sum frequency spectroscopy study

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