- Title
- Single crystal X-ray, AFM, NEXAFS, and OFET studies on angular polycyclic aromatic silyl-capped 7,14-bis(ethynyl)dibenzo b,def chrysenes
- Creator
- Burke, Kerry B.; Shu, Ying; Forsyth, Craig; Winzenberg, Kevin N.; Collis, Gavin E.; Kemppinen, Peter; Singh, Birendra; Bown, Mark; Liaw, Irving I.; Williamson, Rachel M.; Thomsen, Lars; Dastoor, Paul; Belcher, Warwick
- Relation
- Crystal Growth & Design Vol. 12, Issue 2, p. 725-731
- Publisher Link
- http://dx.doi.org/10.1021/co201020w
- Publisher
- American Chemical Society
- Resource Type
- journal article
- Date
- 2012
- Description
- The impact of molecular packing and alignment of 7,14-bis((triethylsilyl)ethynyl)dibenzo[b,def]chrysene (TES-DBC) and 7,14-bis((triisopropylsilyl)ethynyl)dibenzo[b,def]chrysene (TIPS-DBC) on OFET performance was investigated. The bulk solid state packing of these angular polycyclic aromatic hydrocarbons (PAHs) was analyzed via single crystal X-ray analysis, and their molecular stacking arrangements on HMDS modified SiO₂ substrate were studied using near edge X-ray absorption fine structure spectroscopy (NEXAFS) at the carbon K-edge. Our studies found that TES- and TIPS-DBC have significantly different solid state packing arrangements and tilt angles, yet have OFET mobilities that are comparable at 1.6 × 10⁻³ and 1.0 × 10⁻³ cm²/Vs, respectively. The deposition method also has a dramatic impact on film morphology.
- Subject
- organic; NEXAFS; solid state; crystal
- Identifier
- http://hdl.handle.net/1959.13/1310773
- Identifier
- uon:22082
- Identifier
- ISSN:1528-7483
- Language
- eng
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