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- W2044179939 abstract "Abstract Fully conjugated π‐expanded macrocyclic oligothiophenes with 60π‐, 90π‐, 120π‐, 150π‐, and 180π‐electron systems ( 1 – 5 ) were synthesized using modified McMurry coupling reaction as a key step. Compound 1 was converted into macrocyclic oligo(2,5‐thienylene‐ethynylene) 6 using bromination‐dehydrobromination procedure. X‐ray analysis of 1 revealed a unique molecular and packing structure, reflecting a round, planar shape with nanoscale inner cavity. Interestingly, 2 and 3 self‐aggregate in the solid state to form nanowires. The structure of fibrous aggregates was established by scanning electron microscopic and atomic force microscopic analyses. Compounds 1 – 6 exhibit multi‐step reversible redox behavior with fairly low first oxidation potentials, reflecting their cyclic conjugation. Doping of 1 – 3 with iodine gives semiconductors owing to their π‐donor properties and π–π stacking ability. © 2007 Wiley Periodicals, Inc. 18:460–466, 2007; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20337" @default.
- W2044179939 created "2016-06-24" @default.
- W2044179939 creator A5006114858 @default.
- W2044179939 date "2007-07-01" @default.
- W2044179939 modified "2023-10-17" @default.
- W2044179939 title "Syntheses, structures, and supramolecular properties of giant π-expanded macrocyclic oligothiophenes" @default.
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- W2044179939 doi "https://doi.org/10.1002/hc.20337" @default.
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