Preparation and chiroptical properties of a regioselectively substituted cellulose ether with PEO side chains

Zhilian Yue; J. M G Cowie

doi:10.1021/ma0202787

Preparation and chiroptical properties of a regioselectively substituted cellulose ether with PEO side chains

Zhilian Yue, J. M G Cowie

School of Engineering & Physical Sciences

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

30 Citations (Scopus)

Abstract

A novel regioselectively substituted cellulose ether with poly(ethylene oxide) (PEO) side chains, 6-O-trityl-2,3-O-PEOcellulose (TPEOCELL), was synthesized and characterized. The polymer is a thermotropic liquid crystalline material and forms a right-handed chiral nematic phase which reflects visible light at room temperature. The effect of salt on its cholesteric liquid crystallinity was investigated with CD spectroscopy. It has been found that adding small amounts of LiCF₃SO₃ to TPEOCELL ([Li]/[O] < 0.0145) causes a significant untwisting of the cholesteric structure. The effects of other salts on the cholesteric properties of TPEOCELL were also examined.

Original language	English
Pages (from-to)	6572-6577
Number of pages	6
Journal	Macromolecules
Volume	35
Issue number	17
DOIs	https://doi.org/10.1021/ma0202787
Publication status	Published - 13 Aug 2002

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title = "Preparation and chiroptical properties of a regioselectively substituted cellulose ether with PEO side chains",

abstract = "A novel regioselectively substituted cellulose ether with poly(ethylene oxide) (PEO) side chains, 6-O-trityl-2,3-O-PEOcellulose (TPEOCELL), was synthesized and characterized. The polymer is a thermotropic liquid crystalline material and forms a right-handed chiral nematic phase which reflects visible light at room temperature. The effect of salt on its cholesteric liquid crystallinity was investigated with CD spectroscopy. It has been found that adding small amounts of LiCF3SO3 to TPEOCELL ([Li]/[O] < 0.0145) causes a significant untwisting of the cholesteric structure. The effects of other salts on the cholesteric properties of TPEOCELL were also examined.",

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AU - Yue, Zhilian

AU - Cowie, J. M G

PY - 2002/8/13

Y1 - 2002/8/13

N2 - A novel regioselectively substituted cellulose ether with poly(ethylene oxide) (PEO) side chains, 6-O-trityl-2,3-O-PEOcellulose (TPEOCELL), was synthesized and characterized. The polymer is a thermotropic liquid crystalline material and forms a right-handed chiral nematic phase which reflects visible light at room temperature. The effect of salt on its cholesteric liquid crystallinity was investigated with CD spectroscopy. It has been found that adding small amounts of LiCF3SO3 to TPEOCELL ([Li]/[O] < 0.0145) causes a significant untwisting of the cholesteric structure. The effects of other salts on the cholesteric properties of TPEOCELL were also examined.

AB - A novel regioselectively substituted cellulose ether with poly(ethylene oxide) (PEO) side chains, 6-O-trityl-2,3-O-PEOcellulose (TPEOCELL), was synthesized and characterized. The polymer is a thermotropic liquid crystalline material and forms a right-handed chiral nematic phase which reflects visible light at room temperature. The effect of salt on its cholesteric liquid crystallinity was investigated with CD spectroscopy. It has been found that adding small amounts of LiCF3SO3 to TPEOCELL ([Li]/[O] < 0.0145) causes a significant untwisting of the cholesteric structure. The effects of other salts on the cholesteric properties of TPEOCELL were also examined.

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U2 - 10.1021/ma0202787

DO - 10.1021/ma0202787

M3 - Article

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VL - 35

SP - 6572

EP - 6577

JO - Macromolecules

JF - Macromolecules

IS - 17

ER -

Preparation and chiroptical properties of a regioselectively substituted cellulose ether with PEO side chains

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