Study on the influence of methyl groups and their location on properties of triphenylamino-based charge transporting hydrazones |
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Authors: | Simona Urnikaite Maryte Daskeviciene Tadas Malinauskas Vygintas Jankauskas Vytautas Getautis |
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Institution: | (1) Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, 50270 Kaunas, Lithuania;(2) Department of Solid State Electronics, Vilnius University, Saulėtekio 9-III, 10222 Vilnius, Lithuania; |
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Abstract: | Abstract Methyl substituent effects on the HOMO and LUMO energy levels, and the ability to transport charge and form stable molecular
glasses of 4-(diphenylamino)benzaldehyde phenylhydrazones were investigated. Thermal properties, HOMO and LUMO energy levels,
and hole mobility values are dependent on the number of methyl substituents and their position in the investigated transporting
materials. Surprisingly, however, the presence of methyl groups at any position negatively affects the hole drift mobility
of the molecularly doped polymers containing those hydrazones. |
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