| Summary: | 碩士 === 國立中山大學 === 化學系研究所 === 107 === Hexaalkoxy-dibenzo[a,c]phenazine is known to assemble into columnar LC assemblies. We have also recently reported the ambipolar character of the dibenzo[a,c]phenazine core. On the other hand, 9,10-anthraquinon scaffold are known to be favorable for the construction of new novel n-type materials due to their high chemical stability and presence of the carbonyl groups in their structures for tuning the LUMO energy. Furthermore the anthraquinone ring can enhanced pi–pi stacking, show better absorption spectra in visible range due to n–p* transition.
Therefore, it is interest to incorporate anthraquinone ring into the dibenzo[a,c]phenazine core to provide alternative new electron acceptors with desirable properties such as strong and broad absorption, high electron mobility, suitable energy levels. Herein, we report the synthesis of a directly fused unsymmertic dibenzo[a,c]phenazine-anthraquinone core having four alkoxy side-chains and their mesogenic properties using polarized optical microscopy(POM), differential scanning calorimetry(DSC), and X-ray diffraction(XRD). We also calculated their theoretical LUMO and HOMO energy.
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