Double-hexagonal morphology formed by rod-rich triblock copolymer

Longcheng Gao; Qiwei Pan; Xiaofang Chen; Xinghe Fan; Xiaolei Zhang; Zhihao Zhen; Qifeng Zhou

doi:10.1021/ma702095x

Double-hexagonal morphology formed by rod-rich triblock copolymer

Longcheng Gao
, Qiwei Pan
, Xiaofang Chen
, Xinghe Fan^*
, Xiaolei Zhang
, Zhihao Zhen
, Qifeng Zhou

^*Corresponding author for this work

Peking University

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

12 Scopus citations

Abstract

A mesogen-jacketed liquid crystal polymers (MJLCP), poly-{[2,5,-bis-(4- methoxyphenyl)oxycarbonyl]styrene} (PMPCS), in which the LC mesogens are attached to the mainchain by short linkages to force the mainchain to adopt an extended conformation for steric factors was investigated. Their microdomain structure was investigated by small-angle X-ray scattering (SAXS) and the dilute solution of the sample in THF was casted into PTFE substrate. The solvent was allowed to evaporate under THF atmosphere. The rigid main chain pack hexagonally to form a nematic phase with a d spacing of 1.67 nm, corresponding to the diameter of the mesogen-packed mainchain. WAXD results indicate that the LC mesogens form a hexatic smectic phase. It was also revealed that in the continuous PMPCS domain, the tilted mesogens adopt a hexatic smectic phase, which is different from that observed for the homoPMPCS.

Original language	English
Pages (from-to)	9205-9207
Number of pages	3
Journal	Macromolecules
Volume	40
Issue number	26
DOIs	https://doi.org/10.1021/ma702095x
State	Published - 25 Dec 2007
Externally published	Yes

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10.1021/ma702095x

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title = "Double-hexagonal morphology formed by rod-rich triblock copolymer",

abstract = "A mesogen-jacketed liquid crystal polymers (MJLCP), poly-\{[2,5,-bis-(4- methoxyphenyl)oxycarbonyl]styrene\} (PMPCS), in which the LC mesogens are attached to the mainchain by short linkages to force the mainchain to adopt an extended conformation for steric factors was investigated. Their microdomain structure was investigated by small-angle X-ray scattering (SAXS) and the dilute solution of the sample in THF was casted into PTFE substrate. The solvent was allowed to evaporate under THF atmosphere. The rigid main chain pack hexagonally to form a nematic phase with a d spacing of 1.67 nm, corresponding to the diameter of the mesogen-packed mainchain. WAXD results indicate that the LC mesogens form a hexatic smectic phase. It was also revealed that in the continuous PMPCS domain, the tilted mesogens adopt a hexatic smectic phase, which is different from that observed for the homoPMPCS.",

author = "Longcheng Gao and Qiwei Pan and Xiaofang Chen and Xinghe Fan and Xiaolei Zhang and Zhihao Zhen and Qifeng Zhou",

year = "2007",

month = dec,

day = "25",

doi = "10.1021/ma702095x",

language = "英语",

volume = "40",

pages = "9205--9207",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

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}

TY - JOUR

T1 - Double-hexagonal morphology formed by rod-rich triblock copolymer

AU - Gao, Longcheng

AU - Pan, Qiwei

AU - Chen, Xiaofang

AU - Fan, Xinghe

AU - Zhang, Xiaolei

AU - Zhen, Zhihao

AU - Zhou, Qifeng

PY - 2007/12/25

Y1 - 2007/12/25

N2 - A mesogen-jacketed liquid crystal polymers (MJLCP), poly-{[2,5,-bis-(4- methoxyphenyl)oxycarbonyl]styrene} (PMPCS), in which the LC mesogens are attached to the mainchain by short linkages to force the mainchain to adopt an extended conformation for steric factors was investigated. Their microdomain structure was investigated by small-angle X-ray scattering (SAXS) and the dilute solution of the sample in THF was casted into PTFE substrate. The solvent was allowed to evaporate under THF atmosphere. The rigid main chain pack hexagonally to form a nematic phase with a d spacing of 1.67 nm, corresponding to the diameter of the mesogen-packed mainchain. WAXD results indicate that the LC mesogens form a hexatic smectic phase. It was also revealed that in the continuous PMPCS domain, the tilted mesogens adopt a hexatic smectic phase, which is different from that observed for the homoPMPCS.

AB - A mesogen-jacketed liquid crystal polymers (MJLCP), poly-{[2,5,-bis-(4- methoxyphenyl)oxycarbonyl]styrene} (PMPCS), in which the LC mesogens are attached to the mainchain by short linkages to force the mainchain to adopt an extended conformation for steric factors was investigated. Their microdomain structure was investigated by small-angle X-ray scattering (SAXS) and the dilute solution of the sample in THF was casted into PTFE substrate. The solvent was allowed to evaporate under THF atmosphere. The rigid main chain pack hexagonally to form a nematic phase with a d spacing of 1.67 nm, corresponding to the diameter of the mesogen-packed mainchain. WAXD results indicate that the LC mesogens form a hexatic smectic phase. It was also revealed that in the continuous PMPCS domain, the tilted mesogens adopt a hexatic smectic phase, which is different from that observed for the homoPMPCS.

UR - https://www.scopus.com/pages/publications/38349187863

U2 - 10.1021/ma702095x

DO - 10.1021/ma702095x

M3 - 文章

AN - SCOPUS:38349187863

SN - 0024-9297

VL - 40

SP - 9205

EP - 9207

JO - Macromolecules

JF - Macromolecules

IS - 26

ER -

Double-hexagonal morphology formed by rod-rich triblock copolymer

Abstract

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