• Brunelli, Michela
• Brühne, Stefan
• Kolb, Ute
• Mugnaioli, Enrico
• Gorelik, Tatiana
• Schmidt, Martin U.
• Alig, Edith
• Brüning, Jürgen
• Rech, Anette
• Wolf, Alexandra K.
• Stowasser, Frank
• Gozzo, Fabia
• Streek, Jacco Van De
• Glinnemann, Jürgen
• Buchsbaum, Christian
• Fink, Lothar

Abstract

<jats:p>The crystal structure of the nanocrystalline α phase of Pigment Yellow 213 (P.Y. 213) was solved by a combination of single-crystal electron diffraction and X-ray powder diffraction, despite the poor crystallinity of the material. The molecules form an efficient dense packing, which explains the observed insolubility and weather fastness of the pigment. The pair-distribution function (PDF) of the α phase is consistent with the determined crystal structure. The β phase of P.Y. 213 shows even lower crystal quality, so extracting any structural information directly from the diffraction data is not possible. PDF analysis indicates the β phase to have a columnar structure with a similar local structure as the α phase and a domain size in column direction of approximately 4 nm.</jats:p>

Topics

• impedance spectroscopy
• phase
• electron diffraction
• crystallinity