Mesogen jacketed liquid crystalline polyacetylene containing triphenylene discogen: synthesis and phase structure

文献信息

发布日期 2012-10-23
DOI 10.1039/C2PY20535A
影响因子 5.582
作者

Zhen-Qiang Yu, Jacky W. Y. Lam, Keqing Zhao, Cai-Zhen Zhu, Shuang Yang, Jie-Sheng Lin, Bing Shi Li, Jian-Hong Liu, Er-Qiang Chen, Ben Zhong Tang


查看原文

摘要

Triphenylene-containing acetylenes with one or three methylene units as spacers and the corresponding mesogen-jacketed liquid crystalline polyacetylenes (MJLCPAs) were designed and synthesized, the mesomorphic properties and phase behaviors of the monomers and novel side-chain liquid crystalline polymers were investigated. The monomers [HCC(CH2)mC18H6(OC6H13)5; m = 1, 3] are prepared by consecutive etherization, coupling, and etherization reactions, and the chemical structures were confirmed by mass spectroscopy and 1H/13C-NMR. The phase behaviors of the monomers were investigated by differential scanning calorimetry (DSC), polarized light microscopy (PLM), and wide-angle X-ray diffraction (WAXD). The results show that both of the monomers form a hexagonal columnar liquid crystal phase at room temperature. The monomers are polymerized using [Rh(nbd)Cl]2 as catalyst and producing soluble polymers in the yields of 55% and 52%, respectively. The chemical structures and phase behaviors of the two polymers are characterized and evaluated by IR, NMR, TGA, DSC, and WAXD analyses. Both of the two polymers show enhanced thermal and chemical stability with thermal decomposition temperatures up to higher than 340 °C due to the protection of the “jacketed effect” of the side-chain triphenylenes wrapped around the rigid polyacetylene main-chain. The polymers adopt a columnar shaped structure and self-organized into hexagonally packed columnar phase. The relative electron density maps of the columnar structure are also reconstructed.

相关文献

Reversible Cl/Cl− redox in a spinel Mn3O4 electrode

Sean K. Sandstrom, Qiuyao Li, Yiming Sui, Mason Lyons, Chun-Wai Chang, Rui Zhang, Heng Jiang, Mingliang Yu, David Hoang, William F. Stickle, Huolin L. Xin, Zhenxing Feng, Xiulei Ji

2023-10-24 Edge Article

DOI: 10.1039/D3SC04545E

Reactivity of metal–oxo clusters towards biomolecules: from discrete polyoxometalates to metal–organic frameworks

David E. Salazar Marcano, Nada D. Savić, Kilian Declerck, Shorok A. M. Abdelhameed, Tatjana N. Parac-Vogt

2023-11-28 Review Article

DOI: 10.1039/D3CS00195D

Nickel-catalysed asymmetric hydromonofluoromethylation of 1,3-enynes for enantioselective construction of monofluoromethyl-tethered chiral allenes

Ying Zhang, Jimin Yang, Yu-Long Ruan, Ling Liao, Chuang Ma

2023-10-23 Edge Article

DOI: 10.1039/D3SC04474B

Recent advances in supramolecular fullerene chemistry

Youzhi Xu, Max von Delius

2023-10-18 Review Article

DOI: 10.1039/D2CS00937D

Stereoselective RNA reaction with chiral 2′-OH acylating agents

Ryuta Shioi, Lu Xiao, Sayantan Chatterjee

2023-11-07 Edge Article

DOI: 10.1039/D3SC03067A

A proxy for oxygen storage capacity from high-throughput screening and automated data analysis

Jack J. Quayle, Alexandros P. Katsoulidis, John B. Claridge, Andrew P. E. York, David Thompsett, Matthew J. Rosseinsky

2023-10-23 Edge Article

DOI: 10.1039/D3SC03558A

Electron transport through supercrystals of atomically precise gold nanoclusters: a thermal bi-stability effect

Tatsuya Higaki, Jake C. Russell, Daniel W. Paley, Xavier Roy, Rongchao Jin

2023-11-09 Edge Article

DOI: 10.1039/D3SC02753H

Back cover

2023-11-22 Cover

DOI: 10.1039/D3SC90229C

Back cover

2024-01-02 Cover

DOI: 10.1039/D4CS90003K

3D-hosted lithium metal anodes

Xin He, Kai Zhang, Zhiqiang Zhu, Zhangfa Tong

2023-11-20 Tutorial Review

DOI: 10.1039/D3CS00495C

您可能还喜欢

化合物问答

4-[4-三氟甲基苯基]恶唑(CAS号:1126636-40-5)通常如何合成?

4-[4-三氟甲基苯基]恶唑通常通过将4-三氟甲基苯酚与异硫氰酸苯酯在有机溶剂中进行酯化反应合成。该反应可在无水条件下,使用适当的催化剂,如四丁基氢氧化铵,以提...

1126636-40-54-(4-(Trifluoromethy...
化合物问答

氢溴酸西酞普兰(CAS号:59729-32-7)的主要用途是什么?

氢溴酸西酞普兰主要用于治疗抑郁症,通过调节大脑中的神经递质平衡来改善情绪。

59729-32-71-[3-(Dimethylamino)...
化合物问答

RockPhos Pd G3(CAS号:2009020-38-4)通常如何合成?

RockPhos Pd G3 通常通过钯催化偶联反应合成,使用配体 (2'-Amino-2-biphenylyl)(methanesulfonato-kappa...

2009020-38-4(2'-Amino-2-biphenyl...
化合物问答

1-哌啶甲酰胺(CAS号:2158-03-4)的市场或研究趋势如何?

1-哌啶甲酰胺作为有机合成中的重要中间体,其市场需求主要受医药、农药、染料等行业推动。近年来,随着新药开发和绿色化学的发展,该化合物的研究趋势集中在开发更高效、...

2158-03-41-Piperidinecarboxam...
化合物问答

2-(二苯基膦基)乙胺(CAS号:4848-43-5)适用哪些法规指南?

2-(二苯基膦基)乙胺适用于多种法规指南,包括但不限于《全球化学品统一分类和标签制度》(GHS),欧盟《化学品注册、评估、授权和限制》法规(REACH),以及美...

4848-43-52-(Diphenylphosphino...
化合物问答

如何储存间苯二甲酸二烯丙酯(CAS号:1087-21-4)?

间苯二甲酸二烯丙酯应储存在阴凉、干燥、通风良好的地方,远离火源和热源。储存容器应密封,避免光照和高温。储存温度应控制在25℃以下,相对湿度应低于80%。避免与其...

1087-21-4Diallyl isophthalate
化合物问答

什么是间甲苯异硫代异氰酸酯(CAS号:621-30-7)?

间甲苯异硫代异氰酸酯是一种有机化合物,分子式为C7H7NO2S,具有刺激性气味。它是一种重要的有机合成中间体,在合成其他化合物时广泛应用。

621-30-71-Isothiocyanato-3-m...
化合物问答

在合成中是否有N-Boc-D-苯丙氨醇(CAS号:106454-69-7)的替代品?

在合成中,可以考虑使用N-Cbz-D-苯丙氨醇或N-Fmoc-D-苯丙氨醇作为替代品。这些化合物同样具有保护氨基的功能,且在合成过程中表现出良好的反应性能。

106454-69-72-Methyl-2-propanyl ...
化合物问答

3-羟甲基-2-氧异丙基吡啶(CAS号:954240-50-7)的主要用途是什么?

3-羟甲基-2-氧异丙基吡啶主要用于有机合成领域,可以作为合成其他药物、农药或精细化学品的中间体。此外,它还可能在实验室研究中作为特定反应的前体或溶剂。

954240-50-7(2-Isopropoxy-3-pyri...
化合物问答

6-氨基-9-甲基嘌呤(CAS号:700-00-5)应用于哪些行业?

6-氨基-9-甲基嘌呤目前主要应用于医药行业,作为某些药物的中间体。此外,它还可能用于聚合物、传感器和半导体的某些领域,作为功能性单体或掺杂剂。

700-00-59-Methyl-9H-purin-6-...

来源期刊

Polymer Chemistry

Polymer Chemistry
CiteScore: 8.6
自引率: 7.3%
年发文量: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

推荐供应商

免责声明
本页面提供的学术期刊信息仅供参考和研究使用。我们与任何期刊出版商均无关联,也不处理投稿事宜。如有投稿相关咨询,请直接联系相关期刊出版商。
如发现页面信息有误,请发送邮件至 support@chemtradehub.com 联系我们。我们将及时核实并处理您的问题。