Band-gap engineering of donor-acceptor conjugated polymers

H.A.M. Mullekom, van, J.A.J.M. Vekemans, E.W. Meijer

Research output: Contribution to journalArticleAcademic

8 Citations (Scopus)

Abstract

Three series of alternating donor-acceptor substituted co-oligomers (with different chain length), consisting of pyrrole or thiophene as the electron-rich unit and quinoxaline or 2,1,3,-benzobisthiadiazoles as the electron-deficient unit, were prepd. by Pd-catalyzed Stille coupling methodol. The incremental bathochromic shift of the absorption max. upon chain elongation of the three series of oligomers is less than that of the homo-oligomers of thiophene and pyrrole, which is caused by a diminished dispersion of the LUMO level upon chain elongation. The latter conclusion was drawn after comparing the oxidn.- and redn. behavior of the thiophene/benzothiadiazole oligomers with that of thiophene oligomers. The incremental bathochromic shift shows similarity for all three series of oligomers, which is used as a tool in the band-gap engineering of donor-acceptor substituted conjugated polymers
Original languageEnglish
Pages (from-to)1002-1003
JournalPolymer Preprints
Volume39
Publication statusPublished - 1998

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Conjugated polymers
Oligomers
Thiophenes
Energy gap
Pyrroles
Elongation
Quinoxalines
Electrons
Chain length

Cite this

Mullekom, van, H. A. M., Vekemans, J. A. J. M., & Meijer, E. W. (1998). Band-gap engineering of donor-acceptor conjugated polymers. Polymer Preprints, 39, 1002-1003.
Mullekom, van, H.A.M. ; Vekemans, J.A.J.M. ; Meijer, E.W. / Band-gap engineering of donor-acceptor conjugated polymers. In: Polymer Preprints. 1998 ; Vol. 39. pp. 1002-1003.
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Mullekom, van, HAM, Vekemans, JAJM & Meijer, EW 1998, 'Band-gap engineering of donor-acceptor conjugated polymers', Polymer Preprints, vol. 39, pp. 1002-1003.

Band-gap engineering of donor-acceptor conjugated polymers. / Mullekom, van, H.A.M.; Vekemans, J.A.J.M.; Meijer, E.W.

In: Polymer Preprints, Vol. 39, 1998, p. 1002-1003.

Research output: Contribution to journalArticleAcademic

TY - JOUR

T1 - Band-gap engineering of donor-acceptor conjugated polymers

AU - Mullekom, van, H.A.M.

AU - Vekemans, J.A.J.M.

AU - Meijer, E.W.

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AB - Three series of alternating donor-acceptor substituted co-oligomers (with different chain length), consisting of pyrrole or thiophene as the electron-rich unit and quinoxaline or 2,1,3,-benzobisthiadiazoles as the electron-deficient unit, were prepd. by Pd-catalyzed Stille coupling methodol. The incremental bathochromic shift of the absorption max. upon chain elongation of the three series of oligomers is less than that of the homo-oligomers of thiophene and pyrrole, which is caused by a diminished dispersion of the LUMO level upon chain elongation. The latter conclusion was drawn after comparing the oxidn.- and redn. behavior of the thiophene/benzothiadiazole oligomers with that of thiophene oligomers. The incremental bathochromic shift shows similarity for all three series of oligomers, which is used as a tool in the band-gap engineering of donor-acceptor substituted conjugated polymers

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JO - Polymer Preprints

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