Journal
BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY
Volume 6, Issue -, Pages 1070-1078Publisher
BEILSTEIN-INSTITUT
DOI: 10.3762/bjoc.6.122
Keywords
charge transport; hydrogen bonding; oligothiophene; organogel; self-assembly
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Funding
- Alexander von Humboldt foundation
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A bis(trialkoxybenzamide)-functionalized quaterthiophene derivative was synthesized and its self-assembly properties in solution were studied. In non-polar solvents such as cyclohexane, this quaterthiophene pi-system formed fibril aggregates with an H-type molecular arrangement due to synergistic effect of hydrogen bonding and pi-stacking. The self-assembled fibres were found to gelate numerous organic solvents of diverse polarity. The charge transport ability of such elongated fibres of quaterthiophene pi-system was explored by the pulse radiolysis time resolved microwave conductivity (PR-TRMC) technique and moderate mobility values were obtained. Furthermore, initial AFM and UV-vis spectroscopic studies of a mixture of our electron-rich quaterthiophene derivative with the electron acceptor [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) revealed a nanoscale segregated assembly of the individual building blocks in the blend.
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