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• W2015921604 endingPage "16937" @default.
• W2015921604 startingPage "16928" @default.
• W2015921604 abstract "Complexes consisting of poly(4-vinylpyridine) and mesogenic wedge-shaped ligands 4'-[3,4,5-tris(dodecyloxy)benzoyloxy]azobenzene-4-sulfonic acid and 4'-[3,4,5-tris(octyloxy)benzoyloxy]azobenzene-4-sulfonic acid have been prepared with different monomer/ligand ratios. Upon protonation of the poly(4-vinylpyridine) chains by the wedge-shaped sulfonic acid molecules a hypsochromic and hyperchromic effect was observed with the pi-pi* transition of the azo-chromophor, allowing us to monitor the neutralization process by means of UV-vis spectroscopy in solution. The changes of the absorption characteristics implied a conformational change of the polymer backbone. In the bulk the interaction between pyridine and sulfonic acid moieties was proved by FT-IR spectroscopy. Polarizing optical microscopy, differential scanning calorimetry, and X-ray diffraction measurements were used to study the bulk structure of the complexes. The complexes formed a liquid crystalline lamellar phase at low degrees of substitution, while a hexagonal columnar mesophase was observed at degrees of neutralization of 80% and higher." @default.
• W2015921604 created "2016-06-24" @default.
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• W2015921604 date "2006-12-01" @default.
• W2015921604 modified "2023-10-14" @default.
• W2015921604 title "Self-Organization of Polybases Neutralized with Mesogenic Wedge-Shaped Sulfonic Acid Molecules: An Approach toward Supramolecular Cylinders" @default.
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• W2015921604 doi "https://doi.org/10.1021/ja065968v" @default.
• W2015921604 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/17177444" @default.
• W2015921604 hasPublicationYear "2006" @default.
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