[HTML][HTML] Preparation of chiral polymers: Precise chirality transfer from natural species to achiral artificial polymers

T Miao, X Cheng, Y Guo, G Zhang, W Zhang - Giant, 2023 - Elsevier
The synthesis of chiral substances, especially chiral polymers is currently one of the hottest
issues in the field of chiral materials and chemistry due to their unique structural …

Control of One-Handed Helicity in Polyacetylenes: Impact of an Extremely Small Amount of Chiral Substituents

T Ikai, Y Morita, T Majima, S Takeda… - Journal of the …, 2023 - ACS Publications
Controlling the one-handed helicity in synthetic polymers is crucial for developing helical
polymer-based advanced chiral materials. We now report that an extremely small amount of …

Helical polymers with dynamic and static macromolecular helicity memory: The power of helicity memory for helical polymer synthesis and applications

E Yashima, K Maeda - Bulletin of the Chemical Society of Japan, 2021 - academic.oup.com
In this Account, we describe the recent progress in the synthesis and unique features and
functions of helical polymers with a controlled handedness based on the noncovalent …

Emergence of highly enantioselective catalytic activity in a helical polymer mediated by deracemization of racemic pendants

T Ikai, M Ando, M Ito, R Ishidate, N Suzuki… - Journal of the …, 2021 - ACS Publications
Any polymers composed of racemic repeating units are obviously optically inactive and
hence chiral functions, such as asymmetric catalysis, will not be expected at all. Contrary to …

Allostery‐Mimicking Self‐assembly of Helical Poly (phenylacetylene) Block Copolymers and the Chirality Transfer

S Cai, J Chen, S Wang, J Zhang… - Angewandte Chemie …, 2021 - Wiley Online Library
Allostery can regulate protein self‐assembly which further affects biological activities, and
achieving precise control over the chiral suprastructures during self‐assembly remains …

Racemic monomer‐based one‐handed helical polymer recognizes enantiomers through auto‐evolution of its helical handedness excess

T Ikai, T Kurake, S Okuda, K Maeda… - Angewandte Chemie …, 2021 - Wiley Online Library
A racemic monomer‐based optically inactive polyacetylene folds into a one‐handed helix
assisted by a nonracemic alcohol, which can separate various enantiomers as a chiral …

Remote Control of One‐Handed Helicity in Polyacetylenes through Flexible Spacers in Water: Impact of the Spacer Length

T Ikai, K Nakamura, K Mizumoto, K Oki… - Angewandte Chemie …, 2023 - Wiley Online Library
We report the unprecedented sergeants and soldiers (S&S)‐type remote control of one‐
handed helicity in copolymers of chiral/achiral biphenylylacetylenes bearing amphiphilic …

Ultra‐fast One‐Handed Helix Induction and Its Static Helicity Memory in a Poly (biphenylylacetylene) with a Catalytic Amount of Chiral Ammonium Salts

M Fukuda, M Morikawa, D Hirose… - Angewandte Chemie …, 2023 - Wiley Online Library
We report an ultra‐fast helix induction and subsequent static helicity memory in poly
(biphenylylacetylene)(PBPA‐A) assisted by a catalytic amount of nonracemic ammonium …

Chiral and Achiral Pendant-Bound Poly (biphenylylacetylene) s Bearing Amide and/or Carbamate Groups: One-Handed Helix Formations and Chiral Recognition …

T Ikai, S Okuda, M Aizawa, E Yashima - Macromolecules, 2022 - ACS Publications
A series of cis-poly (biphenylylacetylene)(PBPA) derivatives bearing chiral and achiral
pendant groups at the 4′-position of the biphenyl units through an amide (− NHCO−) or …

Chromaticity sensor for discriminatory identification of aliphatic and aromatic primary amines based on conformational changes of polyacetylene

Y Gu, L Liu, Y Wang, C Zhang, T Satoh - Talanta, 2024 - Elsevier
The design and construction of suitable sensors that can selectively recognize chemically
similar substances such as aliphatic and aromatic amines remain challenging. In this work …