Effect of substitution on the hole mobility of bis(diarylamino)biphenyl derivatives doped in poly(styrene)

José Luis Maldonado, Maximilienne Bishop, Canek Fuentes-Hernandez, Pascal Caron, Benoit Domercq, Ya Dong Zhang, Stephen Barlow, S. Thayumanavan, Massimo Malagoli, Jean-Luc Bredas, Seth R. Marder, Bernard Kippelen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

The effect of substitution on hole mobility in N,N′-bis(m-tolyl)-N,N′-diphenyl-1,1′-biphenyl-4, 4′-diamine (TPD) derivatives doped in polystyrene was studied using the time-of-flight technique. Mobility data were collected as a function of electric field and temperature to yield the energetic and positional disorder parameters defined in the disorder formalism. Substituted derivatives exhibit lower mobilities than regular TPD. This decrease is influenced by the change in dipole moment upon substitution of the molecule. However, the dipolar disorder contribution is found to account only partially for the large differences in mobility.

Original languageEnglish (US)
Pages (from-to)994-999
Number of pages6
JournalChemistry of Materials
Volume15
Issue number4
DOIs
StatePublished - Feb 25 2003

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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