Solvent Dependence of the Chain Dimensions of Poly(n-hexyl isocyanate)

Robert Cook; Robert D. Johnson; Chas G. Wade; Daniel J. O'Leary; Beth Muñoz; Mark M. Green

doi:10.1021/ma00216a012

Solvent Dependence of the Chain Dimensions of Poly(n-hexyl isocyanate)

Robert Cook, Robert D. Johnson, Chas G. Wade, Daniel J. O'Leary, Beth Muñoz, Mark M. Green

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Poly(n-hexyl isocyanate), known to be a stiff helical polymer, is found experimentally to have persistence lengths of from 20 to 40 nm, depending upon the solvent in which the measurements are made. The origin of this solvent dependence is hypothesized in the present work to be due to a local interaction of polar solvents with the chain backbone, giving rise to greater torsional oscillations around the backbone bonds. NMR line-width measurements made on the same sample of polymer in a variety of solvents support this idea by showing that the magnitude of the polymer's local motion is correlated with solvent polarity.

Original language	English (US)
Pages (from-to)	3454-3458
Number of pages	5
Journal	Macromolecules
Volume	23
Issue number	14
DOIs	https://doi.org/10.1021/ma00216a012
State	Published - 1990

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma00216a012

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title = "Solvent Dependence of the Chain Dimensions of Poly(n-hexyl isocyanate)",

abstract = "Poly(n-hexyl isocyanate), known to be a stiff helical polymer, is found experimentally to have persistence lengths of from 20 to 40 nm, depending upon the solvent in which the measurements are made. The origin of this solvent dependence is hypothesized in the present work to be due to a local interaction of polar solvents with the chain backbone, giving rise to greater torsional oscillations around the backbone bonds. NMR line-width measurements made on the same sample of polymer in a variety of solvents support this idea by showing that the magnitude of the polymer's local motion is correlated with solvent polarity.",

author = "Robert Cook and Johnson, {Robert D.} and Wade, {Chas G.} and O'Leary, {Daniel J.} and Beth Mu{\~n}oz and Green, {Mark M.}",

year = "1990",

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pages = "3454--3458",

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AU - Cook, Robert

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AU - Wade, Chas G.

AU - O'Leary, Daniel J.

AU - Muñoz, Beth

AU - Green, Mark M.

PY - 1990

Y1 - 1990

N2 - Poly(n-hexyl isocyanate), known to be a stiff helical polymer, is found experimentally to have persistence lengths of from 20 to 40 nm, depending upon the solvent in which the measurements are made. The origin of this solvent dependence is hypothesized in the present work to be due to a local interaction of polar solvents with the chain backbone, giving rise to greater torsional oscillations around the backbone bonds. NMR line-width measurements made on the same sample of polymer in a variety of solvents support this idea by showing that the magnitude of the polymer's local motion is correlated with solvent polarity.

AB - Poly(n-hexyl isocyanate), known to be a stiff helical polymer, is found experimentally to have persistence lengths of from 20 to 40 nm, depending upon the solvent in which the measurements are made. The origin of this solvent dependence is hypothesized in the present work to be due to a local interaction of polar solvents with the chain backbone, giving rise to greater torsional oscillations around the backbone bonds. NMR line-width measurements made on the same sample of polymer in a variety of solvents support this idea by showing that the magnitude of the polymer's local motion is correlated with solvent polarity.

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Solvent Dependence of the Chain Dimensions of Poly(n-hexyl isocyanate)

Abstract

ASJC Scopus subject areas

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