TY - JOUR A1 - Kautek, Wolfgang A1 - Li, G. A1 - Koßmehl, G. A1 - Hunnius, W. A1 - Zhu, H. A1 - Plieth, W. A1 - Melsheimer, J. A1 - Doblhofer, K. T1 - Relative groups on polymer coated electrodes - 10. Electrogenerated conducting polyalkylthiophenes bearing activated ester groups N2 - Three new thiophene derivatives containing different activated ester groups covalently attached to the thiophene ring via a linear undecyl spacer have been synthesized. Electropolymerization of these monomers in acetonitrile led to stable electroactive polymers, while activated functional groups withstand the polymerization conditions and were correctly incorporated in the resulting polymers. These polymers show the characteristic electrochemical behavior of poly(3-alkylthiophene)s with the reversible redox transition in the range of 0.7–0.9 V. UV/Vis spectra of them exhibit an absorption maximum at around 460 nm. Conductivity measurements on oxidized films of these polymers by means of the two-probe method gave values in the range of 10-3–10-2 S cm-1. The reactivity of the pendant activated ester groups was demonstrated by the reaction with butylamine, (4-amino-2-oxabutyl) ferrocene and 2-aminoanthraquinone. Spectroscopic studies and electrochemical characterization confirmed that the immobilized amino compounds are covalently bound to the polymer surfaces. These results suggest that the obtained new polymers can be used as electrically conducting carrier materials for the immobilization of biochemically interesting molecules. KW - Conducting polyalkylthiophene KW - Electropolymerization KW - Activated ester PY - 2000 U6 - https://doi.org/10.1016/S0032-3861(99)00201-3 SN - 0032-3861 SN - 1873-2291 VL - 41 IS - 2 SP - 423 EP - 432 PB - Springer CY - Berlin AN - OPUS4-884 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kautek, Wolfgang A1 - Li, G. A1 - Koßmehl, G. A1 - Plieth, W. A1 - Melsheimer, J. A1 - Doblhofer, K. A1 - Zhu, H. T1 - New conducting carrier materials: polyalkylthiophene functionalized with 1,2-diol group and its protected forms KW - Polyalkylthiophene KW - Conjugated Polymers KW - New conducting carrier materials PY - 1999 SN - 0323-7648 SN - 1521-4044 IS - 50 SP - 252 EP - 259 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-885 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kautek, Wolfgang A1 - Li, G. A1 - Koßmehl, G. A1 - Hunnius, W. A1 - Zhu, H. A1 - Plieth, W. A1 - Melsheimer, J. A1 - Doblhofer, K. T1 - Reactive groups on polymer coated electrodes; 10. Electrogenerated conducting polyalkylthiophenes bearing activated ester groups KW - Conducting polyalkylthiophene KW - Electropolymerization KW - Activated ester PY - 1999 SN - 0032-3861 SN - 1873-2291 IS - 41 SP - 423 EP - 432 PB - Springer CY - Berlin AN - OPUS4-776 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Zhao, F. A1 - Li, G. A1 - Österle, Werner A1 - Häusler, Ines A1 - Zhang, G. A1 - Wang, T. A1 - Wang, Q. T1 - Tribological investigations of glass fiber reinforced epoxy composites under oil lubrication conditions N2 - The tribological performance of short glass fibers (SGF),solid lubricants and silica nanoparticles filled epoxy (EP) composites was investigated under oil lubrication conditions. It is demonstrated that the addition of SGF greatly reduces the friction and wear of EP. However, further addition of solid lubricants and silica nanoparticles does not change obviously the friction and wear. It is identified that the high tribological performance of SGF reinforced EP is related to the high load carrying capacity and abrasion resistance of SGF. The nanostructure of the tribofilm was comprehensively characterized. It is deemed that the tribofilm plays an important role in the tribological performance by avoiding the direct rubbing of the sliding pairs exposed to boundary and mixed lubrication conditions. KW - Reinforced epoxy composites KW - Short glass fiber KW - Oil lubrication KW - Tribofilm PY - 2016 U6 - https://doi.org/10.1016/j.triboint.2016.07.002 SN - 0301-679X VL - 103 SP - 208 EP - 217 PB - Elsevier Ltd. AN - OPUS4-38145 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -