A Polymorph Lost and Found: The High‐Temperature Crystal Structure of Pentacene
2007; Volume: 19; Issue: 16 Linguagem: Inglês
10.1002/adma.200602072
ISSN1521-4095
AutoresTheo Siegrist, Céline Besnard, S. Haas, M. Schiltz, P. Pattison, D. Chernyshov, B. Batlogg, Christian Kloc,
Tópico(s)Fullerene Chemistry and Applications
ResumoA well-defined structural phase transformation is observed in bulk single crystals of pentacene, whereas pentacene powders heated above the phase-transformation temperature do not always fully convert, and upon cooling, coexistence of the two polymorphs is observed down to room temperature. The first-order phase transformation is isostructural: the close-packed herringbone-type layers shift against each other, keeping the same symmetry.
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