Preparation of a solution‐processable,nanostructured ionic polyacetylene |
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| Authors: | Bryan Ringstrand Sönke Seifert Millicent A Firestone |
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| Institution: | 1. Materials Science Division, Argonne National Laboratory, , Argonne, Illinois, 60439;2. X‐ray Sciences Division, Argonne National Laboratory, , Argonne, Illinois, 60439;3. Center for Integrated Nanotechnologies, Los Alamos National Laboratory, , Los Alamos, New Mexico, 87545 |
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| Abstract: | Polymerization of a self‐assembled 1‐dodecyl‐3‐propargylimidazolium bromide ionic liquid (IL) yields a nanostructured ionic polyacetylene. A 1:1 aqueous mixture of the amphiphilic IL produces an ordered lyotropic mesophase that adopts a hexagonal perforated lamellar structure. Rh (I)‐mediated polymerization of the assembled mixture yields a hexagonal modulated lamellar structured polymer. FTIR spectroscopy reveals that the polymer was self n‐doped. The polymer was fractioned into three components with the majority product, possessing an intermediate molecular weight that is soluble in polar organic solvents. In methanol, the optical band gap of the main fraction was determined to be 2.38 eV and was nonemissive. The solution‐processable polymer was airbrush sprayed onto glass substrates to give a liquid‐crystalline, lamellar structured semiconductive film (7.02 × 10?5 S cm?1). The polymer resisted oxidation (degradation) upon storage in air as monitored by vibrational spectroscopy. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013 , 51, 1215–1227 |
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| Keywords: | airbrush‐spray deposition conducting polymers conjugated polyelectrolytes nanostructure nanotechnology polyelectrolytes polymerized ionic liquids |
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