Synthesis and liquid crystalline behavior of bulky poly(methacrylamide)s

Kylie B. Manning; Alexander G. Shtukenberg; Shane M. Nichols; Bart Kahr; Marcus Weck

doi:10.1002/pola.27774

Synthesis and liquid crystalline behavior of bulky poly(methacrylamide)s

Kylie B. Manning, Alexander G. Shtukenberg, Shane M. Nichols, Bart Kahr, Marcus Weck

Chemistry

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

Abstract

N-(Bis(4-(2-ethylhexyloxy)phenyl)(phenyl)-methyl)methacrylamide was synthesized and polymerized via reversible addition-fragmentation chain-transfer (RAFT) polymerization. The chain-transfer agent (4-cyano-4-(phenylcarbonothioylthio) pentanoic acid (CPADB)), combined with a chiral additive, and a radical initiator yielded polymers with dispersities between 1.2 and 1.4. At low concentrations, the polymers are soluble in hexanes and chloroform while at higher concentrations they swell in these solvents. Characterization of the polymers by wide-angle X-ray scattering (WAXS) revealed an interplanar distance of 19.0 Å. The WAXS data combined with polarized optical microscopy support a lamellar crystallization and lyotropic liquid crystalline behavior in hexanes and chloroform.

Original language	English (US)
Pages (from-to)	2563-2568
Number of pages	6
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	53
Issue number	22
DOIs	https://doi.org/10.1002/pola.27774
State	Published - Nov 15 2015

Keywords

helical polymer
helix-sense selective polymerization
liquid-crystalline polymers (LCP)
lyotropic liquid crystal
methacrylate
reversible addition fragmentation chain transfer (RAFT)
spherulites

ASJC Scopus subject areas

Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.1002/pola.27774

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title = "Synthesis and liquid crystalline behavior of bulky poly(methacrylamide)s",

abstract = "N-(Bis(4-(2-ethylhexyloxy)phenyl)(phenyl)-methyl)methacrylamide was synthesized and polymerized via reversible addition-fragmentation chain-transfer (RAFT) polymerization. The chain-transfer agent (4-cyano-4-(phenylcarbonothioylthio) pentanoic acid (CPADB)), combined with a chiral additive, and a radical initiator yielded polymers with dispersities between 1.2 and 1.4. At low concentrations, the polymers are soluble in hexanes and chloroform while at higher concentrations they swell in these solvents. Characterization of the polymers by wide-angle X-ray scattering (WAXS) revealed an interplanar distance of 19.0 {\AA}. The WAXS data combined with polarized optical microscopy support a lamellar crystallization and lyotropic liquid crystalline behavior in hexanes and chloroform.",

keywords = "helical polymer, helix-sense selective polymerization, liquid-crystalline polymers (LCP), lyotropic liquid crystal, methacrylate, reversible addition fragmentation chain transfer (RAFT), spherulites",

author = "Manning, {Kylie B.} and Shtukenberg, {Alexander G.} and Nichols, {Shane M.} and Bart Kahr and Marcus Weck",

note = "Publisher Copyright: {\textcopyright} 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 2563-2568.",

year = "2015",

month = nov,

day = "15",

doi = "10.1002/pola.27774",

language = "English (US)",

volume = "53",

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journal = "Journal of Polymer Science, Part A: Polymer Chemistry",

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T1 - Synthesis and liquid crystalline behavior of bulky poly(methacrylamide)s

AU - Manning, Kylie B.

AU - Shtukenberg, Alexander G.

AU - Nichols, Shane M.

AU - Kahr, Bart

AU - Weck, Marcus

PY - 2015/11/15

Y1 - 2015/11/15

N2 - N-(Bis(4-(2-ethylhexyloxy)phenyl)(phenyl)-methyl)methacrylamide was synthesized and polymerized via reversible addition-fragmentation chain-transfer (RAFT) polymerization. The chain-transfer agent (4-cyano-4-(phenylcarbonothioylthio) pentanoic acid (CPADB)), combined with a chiral additive, and a radical initiator yielded polymers with dispersities between 1.2 and 1.4. At low concentrations, the polymers are soluble in hexanes and chloroform while at higher concentrations they swell in these solvents. Characterization of the polymers by wide-angle X-ray scattering (WAXS) revealed an interplanar distance of 19.0 Å. The WAXS data combined with polarized optical microscopy support a lamellar crystallization and lyotropic liquid crystalline behavior in hexanes and chloroform.

AB - N-(Bis(4-(2-ethylhexyloxy)phenyl)(phenyl)-methyl)methacrylamide was synthesized and polymerized via reversible addition-fragmentation chain-transfer (RAFT) polymerization. The chain-transfer agent (4-cyano-4-(phenylcarbonothioylthio) pentanoic acid (CPADB)), combined with a chiral additive, and a radical initiator yielded polymers with dispersities between 1.2 and 1.4. At low concentrations, the polymers are soluble in hexanes and chloroform while at higher concentrations they swell in these solvents. Characterization of the polymers by wide-angle X-ray scattering (WAXS) revealed an interplanar distance of 19.0 Å. The WAXS data combined with polarized optical microscopy support a lamellar crystallization and lyotropic liquid crystalline behavior in hexanes and chloroform.

KW - helical polymer

KW - helix-sense selective polymerization

KW - liquid-crystalline polymers (LCP)

KW - lyotropic liquid crystal

KW - methacrylate

KW - reversible addition fragmentation chain transfer (RAFT)

KW - spherulites

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U2 - 10.1002/pola.27774

DO - 10.1002/pola.27774

M3 - Article

AN - SCOPUS:84942834716

SN - 0887-624X

VL - 53

SP - 2563

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JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 22

ER -

Synthesis and liquid crystalline behavior of bulky poly(methacrylamide)s

Abstract

Keywords

ASJC Scopus subject areas

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