Abstract
Polyion complex Langmuir-Blodgett (LB) films containing Ru(dpphen)32+ (dpphen = 4,7-diphenyl-1,10-phenanthroline) probe (Rudpphen) were prepared by spreading a mixed chloroform solution of N-dodecylacrylamide (DDA)-N-acryloxysuccinimide (SuOA) copolymer and Ru(dpphen)3Cl2 onto the water subphase at pH = 11. The SuOA groups undergo a hydrolysis at pH = 11 yielding the acrylate anion, which forms an ion-complex with Ru(dpphen)32+ in the monolayer. It was found that Ru(dpphen)32+ is located in the hydrophobic portion of the monolayer at the air/water interface. The monolayers of p(DDA/Rudpphen) could be successfully transferred on a quartz substrate with less than 14 mol %. Ru(dpphen)32+ content. The UV-vis spectroscopy and X-ray diffraction confirmed that the Ru(dpphen)32+ molecules were densely packed and uniformly distributed in the polyion complex LB films. The properties of p(DDA/Rudpphen) monolayer and LB films were compared with p(DDA/Rubpy) LB films (bpy = 2, 2′-bipyridine), which have been previously reported. The luminescence quenching of Ru(dpphen)32+ by oxygen was also discussed.
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Miyashita, T., Chen, J., Yuasa, M. et al. Fabrication of Polymer Organized Thin Films Containing Ruthenium Complexes. Polym J 31, 1121–1126 (1999). https://doi.org/10.1295/polymj.31.1121
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DOI: https://doi.org/10.1295/polymj.31.1121