Bipolar redox behaviour, field-effect mobility and transistor switching of the low-molecular azo glass AZOPD

作者：Arlt Michael; Scheffler Ayna; Suske Irina; Eschner Michael; Saragi Tobat P I; Salbeck Josef; Fuhrmann Lieker Thomas^*

来源：Physical Chemistry Chemical Physics, 2010, 12(41): 13828-13834.

DOI：10.1039/c0cp00643b

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.

• 出版日期2010