Synthesis and mesomorphic properties of side-chain polynorbornenes containing mono-, di- and tri-calamitic mesogenic pendant groups

Ma, Shenhao; Cai, Yongchen; Tu, Yuanyang; Guan, Yan; Chen, Xiaofang

doi:10.1039/c6py00632a

Cited by 12 publications

(4 citation statements)

References 54 publications

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“…For the development of smart organic materials with target properties, many material scientists and engineers have tried to understand the thermodynamic and kinetic relationships between chemical structure, molecular packing structure and morphology, and the resulting material properties. [ 1–6 ] Numerous soft organic materials have been synthesized and investigated taking into account molecular function, molecular geometry and molecular fraction. For example, there are liquid crystal (LC) molecules with different molecular shapes and sizes, amphiphilic supramolecules with different chemical functions, block copolymers with different volume fractions, and host–guest complexes.…”

Section: Introductionmentioning

confidence: 99%

“…DOI: 10.1002/adom.202200405 morphology, and the resulting material properties. [1][2][3][4][5][6] Numerous soft organic materials have been synthesized and investigated taking into account molecular function, molecular geometry and molecular fraction. For example, there are liquid crystal (LC) molecules with different molecular shapes and sizes, amphiphilic supramolecules with different chemical functions, block copolymers with different volume fractions, and host-guest complexes.…”

mentioning

confidence: 99%

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Cyanostilbene‐Based AIEgen Smart Film: Optical Switching by Engineering Molecular Packing Structure and Molecular Conformation Through Thermal and Photoinduced Monotropic Phase Transition

Koo

Jang

et al. 2022

Advanced Optical Materials

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Cyanostilbene‐Based AIEgen Smart Film: Optical Switching by Engineering Molecular Packing Structure and Molecular Conformation Through Thermal and Photoinduced Monotropic Phase Transition

Koo

Jang

et al. 2022

Advanced Optical Materials

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“…These polymers hold the property desired for manufacturing the gas separation membranes, liquid-crystalline materials and so on. [5][6] The needs for developing novel polymer materials have stimulated further study by finding new polymerization way using the other strained cyclic olefinic monomers. In this context, cyclopropenes (CPEs) are the smallest hydrocarbon ring compounds featuring the C-C double bond inside.…”

Section: Introductionmentioning

confidence: 99%

Transition-Metal-Catalyzed Polymerization of Cyclopropenes

Zhang¹,

Gao²,

Chen³

et al. 2021

Chinese Journal of Organic Chemistry

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As the smallest unsaturated cyclic compounds in nature, cyclopropenes serve as important synthetic intermediates in organic chemistry as well as unique monomers in polymerization. While cyclopropenes are mostly explored in the domain of organic chemistry, the polymerization reaction of cyclopropenes has gradually attracted the attentions of chemists in recent years. The research progress of cyclopropene polymerization is reviewed, including addition polymerization and ring-opening metathesis polymerization (ROMP), and prospects for the future development of this field from the perspective of polymer synthesis methodolody.

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“…This influence on the properties of new materials can be collected under the overarching theme of “side chain engineering” . Although this theme includes many beneficial studies and applications in varied fields such as electrochemistry, − photochemistry, , and other investigations of polymeric materials, ,− it is predominantly focused on synthetic polymers. Surprisingly, a similar investigation of the side chain engineering strategy in nature-sourced polymers and the ensuing possibilities is practically unexplored .…”

Section: Introductionmentioning

confidence: 99%

Investigation of Substituent Effect in Modified Nature-Sourced Polymers: Rational Side Chain Engineering to Control Yield, Design, and Properties

et al. 2018

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“Side chain engineering” research has yielded many promising and beneficial results, with applications in various fields. However, this research did not receive sufficient focus when nature-sourced polymers are concerned. In this study, we have performed side chain engineering on chitosan, a nature-sourced polysaccharide, by coupling it with a number of aliphatic aldehydes of varying chain lengths. The side chains’ length and the pursuing effect on the modified products’ properties were studied in great detail. In terms of coupling yields, it was found that some substituents have displayed more favorable results than others by a factor of over 35 times. When studying the modified polymers’ physical and mechanical properties, some of them were found to exhibit more rigid mechanical properties by a factor of 3.5 times than others. The effect was also expressed through self-assembly concentrations and encapsulation capabilities of the modified polymers. Remarkably, the combined experimental and calculated kinetic studies showed the results do not necessarily follow a linear progression relating to substituent chain length, but rather a parabolic pattern with a specific extremum point. This study has assisted in shedding light on the inspected phenomenon, explaining that not only steric and electronic factors but also interfacial solubility related factors govern the coupling reaction and the resulting modified polymers’ properties. As chemical protocols in various academic, clinical, and industrial studies around the world slowly shift their norms toward finding safer ways for the production of novel materials and technologies, nature-sourced polymers hold great promise as virtually inexhaustible raw materials. The perfection of their chemical modification is therefore relevant now more than ever, with far-reaching and diverse applicative prospects.

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Synthesis and mesomorphic properties of side-chain polynorbornenes containing mono-, di- and tri-calamitic mesogenic pendant groups

Abstract: Polynorbornenes containing mesogenic side groups with a controlled number and substituted position were synthesized and their mesomorphic properties were systematically investigated.

Cited by 12 publications

References 54 publications

Cyanostilbene‐Based AIEgen Smart Film: Optical Switching by Engineering Molecular Packing Structure and Molecular Conformation Through Thermal and Photoinduced Monotropic Phase Transition

Cyanostilbene‐Based AIEgen Smart Film: Optical Switching by Engineering Molecular Packing Structure and Molecular Conformation Through Thermal and Photoinduced Monotropic Phase Transition

Transition-Metal-Catalyzed Polymerization of Cyclopropenes

Investigation of Substituent Effect in Modified Nature-Sourced Polymers: Rational Side Chain Engineering to Control Yield, Design, and Properties

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