A quantitative study of the volume changes resulting from pressure-induced unfolding of m -phenylene ethynylene foldamers in solid PMMA and PtBMA

A. Zhu, M. J. Mio, J. S. Moore, H. G. Drickamer

Research output: Contribution to journalArticlepeer-review

Abstract

We have measured the change of the equilibrium constant with pressure for four foldamers of m-phenylene ethynylene. From the change in lnK over short pressure intervals, we have extracted the change in partial molar volume vs pressure in polymethylmethacrylate (PMMA) and polytertbutylmethacrylate (PtBMA). For a given foldamer the ratio of ΔV in the two media is larger for shorter oligomers. The effect of replacing hydrogen by CH3 in the foldamer is greater in PMMA than in PtBMA. In a given medium, the ΔV per monomer unit is essentially independent of the chain length.

Original languageEnglish (US)
Pages (from-to)337-341
Number of pages5
JournalChemical Physics Letters
Volume342
Issue number3-4
DOIs
StatePublished - Jul 13 2001

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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