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

doi:10.1016/S0009-2614(01)00587-5

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 journal › Article › peer-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 language	English (US)
Pages (from-to)	337-341
Number of pages	5
Journal	Chemical Physics Letters
Volume	342
Issue number	3-4
DOIs	https://doi.org/10.1016/S0009-2614(01)00587-5
State	Published - Jul 13 2001

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/S0009-2614(01)00587-5

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

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.",

author = "A. Zhu and Mio, \{M. J.\} and Moore, \{J. S.\} and Drickamer, \{H. G.\}",

note = "The authors wish to thank the US Department of Energy, Division of Materials Science for support under Grant DEFG 02-96ER45439 through the University of Illinois at the Urbana-Champaign Frederick Seitz Materials Research Laboratory.",

year = "2001",

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doi = "10.1016/S0009-2614(01)00587-5",

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AU - Zhu, A.

AU - Mio, M. J.

AU - Moore, J. S.

AU - Drickamer, H. G.

N1 - The authors wish to thank the US Department of Energy, Division of Materials Science for support under Grant DEFG 02-96ER45439 through the University of Illinois at the Urbana-Champaign Frederick Seitz Materials Research Laboratory.

PY - 2001/7/13

Y1 - 2001/7/13

N2 - 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.

AB - 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.

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DO - 10.1016/S0009-2614(01)00587-5

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AN - SCOPUS:0011339120

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VL - 342

SP - 337

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

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ER -

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

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