Self-assembled ordered structures in thin films of HAT5 discotic liquid crystal

• Piero Morales,
• Jan Lagerwall,
• Paolo Vacca,
• Sabine Laschat and
• Giusy Scalia

Beilstein J. Org. Chem. 2010, 6, No. 51, doi:10.3762/bjoc.6.51

• . R. Portici, P.le E. Fermi, I-80055 Portici (Naples) Italy Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany 10.3762/bjoc.6.51 Abstract Thin films of the discotic liquid crystal hexapentyloxytriphenylene (HAT5), prepared from solution via casting

• compared to the bulk situation, where the same material crystallizes into a polymorphic structure at 68 °C. Keywords: AFM; discotic liquid crystals; hexapentyloxytriphenylene; self-organization; thin films; Introduction Discotic liquid crystals are an interesting type of organic semiconductors that allow

• the actual implementation of discotics in devices. In the present work we study thin films of hexapentyloxytriphenylene, known as HAT5 for short (Scheme 1), a historically important discotic molecule which allowed the proof of photoconductivity in discotic LCs [13]. Besides exhibiting high charge