Spectroscopic Properties and UV-irradiation Effects on the Complexes formed between Poly(vinylpyridines) and Polymeric Hydrogen-Bond Donors

Abstract

We made complexes between poly(vinylpyridine) (PVPy) and poly(hydroxyethyl methacrylic acid) (PHEMA), or between PVPy and poly(4-vinylphenol) (PVPhOH). Complexes containing PVPhOH were colored simultaneously with mixing, contrary to those containing PHEMA. Poly(2-vinylpyridine) and PHEMA formed clear solution, though poly(4-vinylpyridine) formed cloud one, and it could come from the difference of ionization of PVPys. PHEMA only formed precipitations with PVPy-polystyrene copolymers, and it could be caused by the interference of benzene ring to hydrogen-bonds among pyridine rings. Contrary to PHEMA complexes, 2D emission spectra of PVPhOH complexes showed no significant change with UV-irradiation at 254 nm.