A novel donor–acceptor molecule containing a cyclic triphenylamine dimer: synthesis, characterization, and application in memory device
作者： Yun Zhao , Changqing Ye , Yali Qiao , Wei Xu , Yanlin Song
DOI: 10.1016/J.TET.2011.12.007
关键词: Triphenylamine 、 Thermal stability 、 Dimer 、 Molecule 、 Ground state 、 Solubility 、 Chemistry 、 Absorption spectroscopy 、 Photochemistry 、 Thin film
摘要: Abstract A novel highly soluble push–pull molecule containing electron-rich cyclic triphenylamine dimer (TPAD) and electron-poor N-phenyl-N′-octyl-naphthalene-1,4,5,8-tetracarboxylic acid bisimide [NI-(8,PBr)] was synthesized under Suzuki-coupling conditions. The resulting compound exhibited excellent thermal stability (Td=354.3 °C) good solubility in common organic solvents. Cyclic voltammogram optical absorption spectroscopy showed that both the electroactive units preserve their nature, respectively, ground state, whereas photophysical investigations a strong fluorescence quenching. Interestingly, switching behavior with extremely high ON/OFF current ratio (1.6E8 at +1 V) observed through memory devices based on thin films of this material.
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