The Rigaku SAXS Solution Portfolio

P.U. Pennartz, N. Grupido and C. Gianninix
Rigaku Innovative Technologies Inc.,1900 Taylor Road, Auburn Hills, MI 48326, USA
(x) IC-CNR Bari, Via Amendola 122/O, I-70126 Bari, Italy

SAXS (small angle scattering) is a method extensively used in a wide range of applications for materials such as metals, alloys, polymers and biological macromolecules (1). The samples are typically prepared as solutions, bulk or porous materials, nanoparticles, and so on. Thousands of papers have been published over the decades, showing morphologic results like shape and size and, especially for ordered systems, nanoscale lattice periodicity. At present, GiSAXS (grazing incidence SAXS) is becoming more popular as films and coatings (for protection of bulk materials or sensors) are getting more attention from industries and science.

Organic field effect transistors including a functional bio-recognition interlayer were proposed as sensors for target molecules in the low pM concentration range (2). X-ray scattering technologies combined with electron microscopy allow the gathering of relevant key information on interface structure and of the layer(s) beneath semiconducting layers. Correlations between structural and morphological data and the performance of the sensor were established.

Organic capped Au nanoparticles (NPs) and PbS quantum dots (QDs) were used as building blocks for the growth of crystals by solvent evaporation (3). Superlattices formed as a function of the size and morphology of the building blocks were investigated using electron microscopy and X-ray techniques. GiSAXS and GiWAXS enabled the elucidation of the self-assembly process.

We will show SAXS, GiSAXS and GiWAXS data for the above applications and their interpretation.

References:

  1. Scientific Reports 4:6985 DOI: 10.1038/srep06985: “An optimized Table-Top Small-Angle X-ray Scattering Set-up for the Nanoscale Structural Analysis of Soft Matter”, by C. Giannini at al. IC-CNR Bari, Italy
  2. Phys. Chem., C 2014, 118, 15853 – 15862, “Structural and Morphological study of Poly(3-hexylthiophene)/Streptavidin Multilayer Structure Serving as Active Layer in Ultra-Sensitive OFET Biosensors”, by G. Scamarcio, C. Giannini at al. IC-CNR Bari, Italy
  3. 2014, 16, 9482 – 9492, “GiSAXS and GiWAXS study of self-assembling process of nanoparticle based superlattices”, by M. Striccoli, C. Giannini at al. IC-CNR Bari, Italy

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