Aufsatz in einer Fachzeitschrift
Bipolar redox behaviour, field-effect mobility and transistor switching of the low-molecular azo glass AZOPD
Details zur Publikation
Autor(inn)en: | Arlt, M.; Scheffler, A.; Suske, I.; Eschner, M.; Saragi, T.; Salbeck, J.; Fuhrmann-Lieker, T. |
Publikationsjahr: | 2010 |
Zeitschrift: | Physical Chemistry Chemical Physics |
Seitenbereich: | 13828-13834 |
Jahrgang/Band : | 12 |
ISSN: | 1463-9076 |
eISSN: | 1463-9084 |
Zusammenfassung, Abstract
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 witha 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.
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 witha 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.
