Abstract
We have developed an effective synthetic route for 2,9-dibromopentacene, opening up new possibilities for future derivatization of pentacene. We also present the fundamental properties. Thin-film and single-crystal field-effect transistor results demonstrate a decrease in apparent charge transport efficiency with decreasing symmetry. The trend in symmetry was further correlated to single-crystal structural analysis, which implied that reduction in symmetry also reduced solid-state order. It is likely that this reduction in order is responsible for the diminished performance in the solid-state films and crystal, despite a reduction in overall tilt angle of the molecules relative to one another. Combined with previous studies, this work provides a more complete perspective on the interplay of symmetry, energetic, and intermolecular interactions in the macroscopic properties of solid-state organic electronic materials.
Original language | English |
---|---|
Pages (from-to) | 2447-2451 |
Number of pages | 5 |
Journal | Synthetic Metals |
Volume | 160 |
Issue number | 23-24 |
DOIs | |
State | Published - Dec 2010 |
Bibliographical note
Funding Information:Z.B. acknowledges partial financial support from the Global Climate and Energy Project (GCEP) and an AFSOR Grant.
Keywords
- High hole mobility
- OFETs
- Selective synthesis
- Substituted pentacene
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry