The construction of photoresponsive polymer particles with supramolecular helicity from achiral monomers by helix-sense-selective polymerization

Cheng, Xiaoxiao; Miao, Tengfei; Ma, Haotian; Yin, Lu; Zhang, Wei; Zhang, Zhengbiao; Zhu, Xiulin

doi:10.1039/c9py01868a

Cited by 14 publications

(11 citation statements)

References 60 publications

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“…Many studies have shown that when a chiral solvent is introduced into an achiral polymer system, the van der Waals forces, CH/π interactions, dipole interactions, metal-ligand coordination, etc., can induce the formation of optically active polymer aggregates. [79,128,129] In 2010, our group presented the synthesis of achiral polymer poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-4,4ʹazobenzene] (F8AZO). It could assemble into optically active aggregates in mixed solvent containing chiral limonene, which showed obvious aggregation ICD.…”

Section: Chiral Solventmentioning

confidence: 99%

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Supramolecular chiral polymeric aggregates: Construction and applications

et al. 2022

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Inspired by the mystery of natural homochirality, the design and construction of artificial chiral systems with special functions including mechanics, chiroptical devices, and chiral separation have aroused the great interest of scientists. Due to its diverse conformations and components, polymers become an excellent candidate to construct artificial chiral aggregates, which provides an opportunity to fabricate advanced chiral materials. Herein, in this review, we summarized not only the different strategies for construction and regulation of supramolecular chirality in chiral or achiral polymer systems, mainly including post-assembly and polymerizationinduced chiral self-assembly in chiral polymer systems and several chirality transfer and induction strategies in achiral polymer systems, but also the formation mechanisms of chiral aggregates by the chirality amplification from the molecular level to supramolecular level. Furthermore, we present the typical applications of chiral polymeric aggregates in circularly polarized light emission, chiral recognition and separation, and chiral elastomer. Finally, the current challenges and future directions of chiral polymeric aggregates are also elaborated. K E Y W O R D S aggregates, chiral applications, chiral assembly, chirality, polymers INTRODUCTION OF CHIRALITY Chirality in diverse scalesIn nature, chiral structures are widespread at various hierarchical levels, such as the chiral amino acid molecules, the double-helical structure of DNA biomacromolecules, the helical shape of bacterial flagella, and even the visible plant cane and galaxy (Figure 1). [1,2] Scientists have also been working on mimicking helical phenomena in nature and exploring the mechanism of chiral information transfer and amplification, so as to reveal the origin of life and develop advanced functional materials. [3][4][5][6] According to the assembling structures of chiral substances at the molecular level and above, chirality can generally be divided into molecular chirality, supramolecular chirality, and macrochirality, which isThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Chiral Solventmentioning

confidence: 99%

“…Many studies have shown that when a chiral solvent is introduced into an achiral polymer system, the van der Waals forces, CH/π interactions, dipole interactions, metal–ligand coordination, etc., can induce the formation of optically active polymer aggregates. [ 79,128,129 ]…”

Section: Construction and Regulation Of Supramolecular Chirality In P...mentioning

confidence: 99%

Supramolecular chiral polymeric aggregates: Construction and applications

et al. 2022

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“…As far as HSSP is concerned, it is widely explored in asymmetric polymerization for preparing chiral helical polymers starting from achiral monomers. [ 184,185 ] Diverse strategies can be taken to induce the otherwise racemic helical polymer chains to form one homohelicity or one predominant helicity. These strategies include using chiral catalyst, chiral monomer‐achiral monomer copolymerization, chiral field, and chiral postinduction.…”

Section: Construction Of Chiral Graphene Hybrid Materialsmentioning

confidence: 99%

Chiral Graphene Hybrid Materials: Structures, Properties, and Chiral Applications

et al. 2021

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Chirality has become an important research subject. The research areas associated with chirality are under substantial development. Meanwhile, graphene is a rapidly growing star material and has hard‐wired into diverse disciplines. Rational combination of graphene and chirality undoubtedly creates unprecedented functional materials and may also lead to great findings. This hypothesis has been clearly justified by the sizable number of studies. Unfortunately, there has not been any previous review paper summarizing the scattered studies and advancements on this topic so far. This overview paper attempts to review the progress made in chiral materials developed from graphene and their derivatives, with the hope of providing a systemic knowledge about the construction of chiral graphenes and chiral applications thereof. Recently emerging directions, existing challenges, and future perspectives are also presented. It is hoped this paper will arouse more interest and promote further faster progress in these significant research areas.

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“…Wu et al developed a novel synthetic strategy for the preparation of optically active helical polyisocyanides by using an achiral initiator in the presence of a chiral additive [ 54 ]. Recently, our group presented a helix-sense selective dispersion polymerization (HSSDP) strategy for preparing optically active monodisperse Azo-containing polymer particles with supramolecular chirality for the first time [ 55 ]. Generally, the term “ M / P helicity” of helical chirality is usually used in helical systems [ 17 ].…”

Section: Basic Concepts Related To Supramolecular Chiralitymentioning

confidence: 99%

Supramolecular Chirality in Azobenzene-Containing Polymer System: Traditional Postpolymerization Self-Assembly Versus In Situ Supramolecular Self-Assembly Strategy

Cheng

Miao

Qian

et al. 2020

IJMS

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Recently, the design of novel supramolecular chiral materials has received a great deal of attention due to rapid developments in the fields of supramolecular chemistry and molecular self-assembly. Supramolecular chirality has been widely introduced to polymers containing photoresponsive azobenzene groups. On the one hand, supramolecular chiral structures of azobenzene-containing polymers (Azo-polymers) can be produced by nonsymmetric arrangement of Azo units through noncovalent interactions. On the other hand, the reversibility of the photoisomerization also allows for the control of the supramolecular organization of the Azo moieties within polymer structures. The construction of supramolecular chirality in Azo-polymeric self-assembled system is highly important for further developments in this field from both academic and practical points of view. The postpolymerization self-assembly strategy is one of the traditional strategies for mainly constructing supramolecular chirality in Azo-polymers. The in situ supramolecular self-assembly mediated by polymerization-induced self-assembly (PISA) is a facile one-pot approach for the construction of well-defined supramolecular chirality during polymerization process. In this review, we focus on a discussion of supramolecular chirality of Azo-polymer systems constructed by traditional postpolymerization self-assembly and PISA-mediated in situ supramolecular self-assembly. Furthermore, we will also summarize the basic concepts, seminal studies, recent trends, and perspectives in the constructions and applications of supramolecular chirality based on Azo-polymers with the hope to advance the development of supramolecular chirality in chemistry.

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The construction of photoresponsive polymer particles with supramolecular helicity from achiral monomers by helix-sense-selective polymerization

Abstract: Optically active azobenzene-containing polymer particles successfully prepared from achiral monomers for the first time by helix-sense-selective dispersion polymerization, also known as asymmetric helix-chirogenic polymerization.

Cited by 14 publications

References 60 publications

Supramolecular chiral polymeric aggregates: Construction and applications

Supramolecular chiral polymeric aggregates: Construction and applications

Chiral Graphene Hybrid Materials: Structures, Properties, and Chiral Applications

Supramolecular Chirality in Azobenzene-Containing Polymer System: Traditional Postpolymerization Self-Assembly Versus In Situ Supramolecular Self-Assembly Strategy

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