Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, D-34109 Kassel, Germany.
Phys Chem Chem Phys. 2010 Nov 7;12(41):13828-34. doi: 10.1039/c0cp00643b. Epub 2010 Sep 20.
We present electrochemical and spectroelectrochemical data for the bipolar azo compound N,N'-diphenyl-N,N'-bis[4-(phenylazo)phenyl]-4,4'diaminobiphenyl (AZOPD) demonstrating reversible bipolar redox behaviour with a bandgap of 2.1 eV. The reduced species formed upon two-electron transfer can be described as bis(radical anion) as was confirmed by comparison with a reference compound with only one azo chromophore. Hole and electron transport behaviour in amorphous films was demonstrated by the fabrication of organic field-effect transistors using gold and magnesium contacts, respectively. The transistors are sensitive to light due to E-Z photoisomerization.
我们呈现了双极偶氮化合物 N,N'-二苯基-N,N'-双[4-(苯基偶氮基)苯基]-4,4'-二氨基联苯（AZOPD）的电化学和光谱电化学数据，该化合物表现出具有 2.1eV 带隙的可逆双极氧化还原行为。通过与只有一个偶氮发色团的参比化合物进行比较，证实了在双电子转移过程中形成的还原物种可以描述为双（自由基阴离子）。通过使用金和镁接触分别制造有机场效应晶体管，证明了无定形薄膜中的空穴和电子输运行为。由于 E-Z 光致异构化，晶体管对光敏感。
