Hydrogen-bonding-directed layer-by-layer assembly of poly(4-vinylpyridine) and poly(4-vinylphenol): effect of solvent composition on multilayer buildup

Langmuir. 2004 Oct 12;20(21):9366-70. doi: 10.1021/la048685u.

Abstract

This paper describes the buildup of hydrogen-bonding-directed poly(4-vinylpyridine)/poly(4-vinylphenol) (PVPy/PVPh) multilayer film that was fabricated by layer-by-layer (LbL) assembly of PVPy and PVPh from an ethanol solution. UV-visible spectroscopy and Fourier transform infrared (FT-IR) spectroscopy revealed a uniform deposition process. The interaction between PVPy and PVPh was identified as hydrogen bonding through FT-IR spectroscopy and temperature-dependent IR spectral changes of the hydrogen-bonded multilayer. Notably, we discussed the effect of solvent conditions on the growth of PVPy/PVPh multilayer films monitored by UV-visible spectroscopy. It was found that increasing the ratio of N,N-dimethylformamide (DMF) in the mixed ethanol/DMF solvents resulted in a marked decrease of the amount of polymers adsorbed, which was attributed to the increased polarity of the adsorption solutions. Furthermore, the solvent stability of PVPy/PVPh multilayer film in mixed ethanol/DMF solvents with different DMF ratios was also investigated. As a result, a new method for tuning the structure of hydrogen-bonding-directed multilayer film was developed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ethanol / chemistry
  • Hydrogen Bonding
  • Membranes, Artificial*
  • Particle Size
  • Polyvinyls / chemistry*
  • Solvents / chemistry
  • Surface Properties

Substances

  • Membranes, Artificial
  • Polyvinyls
  • Solvents
  • poly(4-vinylphenol)
  • poly(4-vinylpyridine)
  • Ethanol