2017
DOI: 10.1021/acs.accounts.7b00025
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Homochiral Evolution in Self-Assembled Chiral Polymers and Block Copolymers

Abstract: The significance of chirality transfer is not only involved in biological systems, such as the origin of homochiral structures in life but also in man-made chemicals and materials. How the chiral bias transfers from molecular level (molecular chirality) to helical chain (conformational chirality) and then to helical superstructure or phase (hierarchical chirality) from self-assembly is vital for the chemical and biological processes in nature, such as communication, replication, and enzyme catalysis. In this A… Show more

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Cited by 87 publications
(97 citation statements)
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“…Note that, by using a chiral monomer, a novel helical phase (H*) could be obtained in AB diblock copolymer composed of chiral block (designated as chiral block copolymer, BCP*) (22)(23)(24). Chirality transfers from molecular (monomeric) to conformational (chain) and, ultimately, to hierarchical (multichain domain) chirality in selfassembled BCPs* could be achieved to give the H* with controlled chirality, demonstrating the generic behaviors of homochiral evolution at different length scales from self-assembly (25)(26)(27).…”
Section: Introductionmentioning
confidence: 99%
“…Note that, by using a chiral monomer, a novel helical phase (H*) could be obtained in AB diblock copolymer composed of chiral block (designated as chiral block copolymer, BCP*) (22)(23)(24). Chirality transfers from molecular (monomeric) to conformational (chain) and, ultimately, to hierarchical (multichain domain) chirality in selfassembled BCPs* could be achieved to give the H* with controlled chirality, demonstrating the generic behaviors of homochiral evolution at different length scales from self-assembly (25)(26)(27).…”
Section: Introductionmentioning
confidence: 99%
“…to form the so-called helical phase (H*), hexagonally packed arrays of helical cylinders whose homochiral helical sense is dictated by monomer stereochemistry (9,10). Subsequent spectroscopic studies of these chiral diblocks and their assembly demonstrated the transfer of chirality from monomer stereochemistry to the intrachain helicity of PDLA or PLLA blocks (11,12), and suggested further chirality in the interchain pattern of organization in H* assemblies. Motivated by these observations, Grason and coworkers developed a generalization of the standard self-consistent field model of BCPs, named orientational self-consistent field (oSCF) theory, which models chirality as a thermodynamic preference for cholesteric twist of the flexible chain segments.…”
Section: Significancementioning
confidence: 99%
“…Under the driving force of hydrophobic effect and electrostatic forces, these nanosheets gradually transferred into the helical nanostructure. Interestingly, it was found that all the helices having an identical handedness (left‐handed), suggesting the presence of homochiral evolution during the hierarchical self‐assembly …”
Section: Crystallization and Self‐assembly Of Polypeptoid Polymersmentioning
confidence: 99%
“…In addition, the location of chiral blocks could also contribute to domain size, namely, mid‐racemic segment resulted in a larger d ‐spacing. However, the presence of chiral blocks in the polypeptoids did not lead to the formation of chiral self‐assembly . Very recently, the same authors studied the sequence effects on the microphase separation of polystyrene‐ b ‐polypeptoid block copolymers .…”
Section: Crystallization and Self‐assembly Of Polypeptoid Polymersmentioning
confidence: 99%