Pair distribution functions of amorphous organic thin films from synchrotron X-ray scattering in transmission mode

Using high-brilliance high-energy synchrotron X-ray radiation, for the first time the total scattering of a thin organic glass film deposited on a strongly scattering inorganic substrate has been measured in transmission mode. The organic thin film was composed of the weakly scattering pharmaceutica...

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Bibliographic Details
Published in:IUCrJ 2017-09, Vol.4 (Pt 5), p.555-559
Main Authors: Shi, Chenyang, Teerakapibal, Rattavut, Yu, Lian, Zhang, Geoff G Z
Format: Article
Language:English
Subjects:
amorphous organic thin films
Amorphous structure
Borosilicate glass
Diffraction
Distribution functions
Energy consumption
Energy transmission
Glass substrates
indomethacin
Observations
Optical properties
pair distribution functions
Properties
Research Letters
Scattering
Scattering (Physics)
Thin films
transmission X-ray scattering
X-rays
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Summary:Using high-brilliance high-energy synchrotron X-ray radiation, for the first time the total scattering of a thin organic glass film deposited on a strongly scattering inorganic substrate has been measured in transmission mode. The organic thin film was composed of the weakly scattering pharmaceutical substance indomethacin in the amorphous state. The film was 130 µm thick atop a borosilicate glass substrate of equal thickness. The atomic pair distribution function derived from the thin-film measurement is in excellent agreement with that from bulk measurements. This ability to measure the total scattering of amorphous organic thin films in transmission will enable accurate structural studies for a wide range of materials.
ISSN:2052-2525
2052-2525
DOI:10.1107/S2052252517009344