An electron-deficient discotic liquid-crystalline material

K. Pieterse, P.A. Hal, van, R. Kleppinger, J.A.J.M. Vekemans, R.A.J. Janssen, E.W. Meijer

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Hexaazatriphenylene-hexacarboxy triimide 1 was synthesized and fully characterized using NMR, IR, UV/vis, and fluorescence spectroscopy. DSC and polarization microscopy showed compound 1 to be liquid crystalline over a large temperature range, while its specific mesophase (Col(ho)) could be determined via X-ray scattering experiments. Although the first reduction potential of 1 could not be measured directly, two closely related reference compounds 4 and 5 featured low first reduction potentials, suggesting the suitability of 1 as an acceptor material in photoinduced electron-transfer processes. The latter was confirmed via photoinduced absorption and fluorescence spectroscopy on mixed films of 1 and poly(3-hexylthiophene)
Original languageEnglish
Pages (from-to)2675-2679
Number of pages5
JournalChemistry of Materials
Issue number8
Publication statusPublished - 2001


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