Solution of an elusive pigment crystal structure from a thin film: a combined X-ray diffraction and computational study.

ABSTRACT: Epindolidione, a hydrogen-bonded derivative of the organic semiconductor tetracene, is an organic pigment which has previously been used to produce stable OFETs with relatively high hole mobilities. Despite its use as an inkjet pigment and organic semiconductor, the crystal structure of epindolidione has proved elusive and is currently unknown. In this work, we report a crystal structure solution of epindolidione determined from vapor deposited thin films using a combined experimental and theoretical approach. The structure is found to be similar to one of the previously reported epindolidione derivatives and is most likely a surface-mediated polymorph, with a slightly different crystal packing compared to the bulk powder. The effect of substrate temperature on film morphology and structur

SUBMITTER: Jones AOF 

PROVIDER: S-EPMC5436089 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature