51502-65-9Relevant academic research and scientific papers
Trialkylsilylethynyl-substituted triphenylenes and hexabenzocoronenes: Highly soluble liquid crystalline materials and their hole transport abilities
Hirose, Takuji,Miyazaki, Yutaro,Watabe, Mizuki,Akimoto, Sho,Tachikawa, Tatsuya,Kodama, Koichi,Yasutake, Mikio
supporting information, p. 4714 - 4721 (2015/07/27)
Four triphenylene (TP) and four hexa-peri-hexabenzocoronene (HBC) derivatives with trialkylsilylethynyl groups were prepared and characterized by differential scanning calorimetry, polarizing optical microscopy, and X-ray diffraction measurements. All compounds were highly soluble in less-polar organic solvents and exhibited a columnar phase, Colh or Colr for the TPs, and Colh for the HBCs. The hole transport ability in the HBCs' columnar phase, 0.4-1.5×10-3 cm2 V-1 s-1 at 40-180°C, and its temperature dependence were determined by the time-of-flight method using a solution technique.
Predictability of thermal and electrical properties of end-capped oligothiophenes by a simple bulkiness parameter
Kreyes, Andreas,Mourran, Ahmed,Hong, Zhihua,Wang, Jingbo,Moeller, Martin,Gholamrezaie, Fatemeh,Roelofs, W. S. Christian,De Leeuw, Dago M.,Ziener, Ulrich
, p. 2128 - 2136 (2013/07/27)
The branching topology of end groups attached to several series of oligothiophenes has a systematic effect on thermal and electrical properties of the oligomers. The series were synthesized in a modular approach and show a distinct drop of the melting point Tm on increasing bulkiness of the substituents. The same trend can be found for the dissociation temperatures Tdis of aggregates in solution. Similarly, monolayer OFET mobilities μFET are significantly decreasing with increasing bulkiness of the substituents. A simple geometric model is presented quantitatively correlating the transition temperatures and mobilities with the substituents' structure based on a bulkiness parameter P, which allows predicting Tm, T dis, and μFET of corresponding not yet synthesized oligomers with branched substituents. This model might be generally applicable for end-capped rod-like conjugated oligomers.
