Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 21, Issue 18, Pages 6898-6905Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201406287
Keywords
adsorption; oligothiophenes; polymers; scanning probe microscopy; Schiff bases
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Funding
- National Science Foundation of China [21173061, 21373070, 21403266]
- Open Project of State Key Laboratory of Supramolecular Structure and Materials (JLU) [SKLSSM201432]
- Natural Science Foundation of Shandong Province [ZR2014EMQ001]
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Surface-mediated Schiff base coupling reactions between oligothiophenes equipped with an aldehyde group and aromatic diamines were investigated on highly oriented pyrolytic graphite (HOPG) by means of scanning tunneling microscopy (STM) under ambient conditions. To investigate the evolution process from monomers to resultant polymers and the mechanism of reactions, we controlled the ratio of precursors and the reactive temperature, and we obtained high-resolution STM images of different stages of the surface reaction. The results suggest that preferential adsorption of one kind of monomer has a great influence on the onsurface Schiff base reaction.
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