One‐Handed Covalent Helical Ladder Polymers: The Dawn of a Tailorable Class of Chiral Functional Materials

G Preda, D Pasini - Angewandte Chemie International Edition, 2024 - Wiley Online Library
In the last decades, chemists have developed methods to synthesize helical molecular
architectures using a combination of covalent and non‐covalent interactions. Very recently …

Conjugated Ladder Polymers: Unique Materials for Optoelectronics, and Energy Harvesting and Storage

KC Chong, TLD Tam, R Tao, KLO Chin… - Energy Material …, 2025 - spj.science.org
Conjugated ladder polymers (cLPs) are polymers consisting of continuous fused aromatic
rings with π conjugation along their backbone. This unique structure imparts cLPs with …

2, 2′‐Tethered Binaphthyl‐Embedded One‐Handed Helical Ladder Polymers: Impact of the Tether Length on Helical Geometry and Chiroptical Property

T Ikai, N Mishima, T Matsumoto… - Angewandte Chemie …, 2024 - Wiley Online Library
Synthetic breakthroughs diversify the molecules and polymers available to chemists. We
now report the first successful synthesis of a series of optically‐pure 2, 2′‐tethered …

Defect‐Free Synthesis of a Fully π‐Conjugated Helical Ladder Polymer and Resolution into a Pair of Enantiomeric Helical Ladders

T Ikai, S Miyoshi, K Oki, R Saha, Y Hijikata… - Angewandte …, 2023 - Wiley Online Library
Fully π‐conjugated ladder polymers with a spiral geometry represent a new class of helical
polymers with great potential for organic nanodevices, but there is no precedent for an …

Chain‐Length Dependence of the Optical Activity of Helical Triptycene‐Based π‐Conjugated Ladder Polymers

R Ammenhäuser, JM Lupton… - Advanced Optical …, 2024 - Wiley Online Library
Helical ladder polymers are designed by connecting planar indenofluorene chromophores
by chiral triptycene linkers. The resulting hexagonal helices exhibit a substantial degree of …

Oxepine-based π-conjugated ladder/step-ladder polymers with excited-state aromaticity

NMW Wu, MC Warndorf, A Alexander-Katz… - …, 2024 - ACS Publications
Ladder polymers with backbones of uninterrupted ring-fused units have attracted academic
and industrial attention for decades because of their extended π-conjugation and intrinsic …

High-enantioselectivity adsorption separation of racemic mandelic acid and methyl mandelate by robust chiral UiO-68-type Zr-MOFs

M Li, L Zhang, B Wu, M Hong - Inorganic Chemistry, 2023 - ACS Publications
Mandelic acid and its analogues are highly valuable medical intermediates and play an
important role in the pharmaceutical industry, biochemistry, and life sciences. Therefore …

The Exciton Model for Molecular Materials: Past, Present and Future?

SCJ Meskers - ChemPhysChem, 2023 - Wiley Online Library
In assemblies of identical molecules or chromophores, electronic excitations can be
described as excitons, bound electron‐hole pairs that can move from site to site as a pair in …

Secondary Structure Modulation of Triptycene-Based One-Handed Helical Ladder Polymers through π-Extension of Achiral Segments

T Ikai, A Tanaka, T Shiotani, K Oki… - Organic …, 2023 - thieme-connect.com
A series of enantiopure triptycene-based one-handed helical ladder polymers containing π-
extended achiral segments with naphthalene, fluorene, and carbazole spacers was …

Positive Synergy between the Helical Poly(phenylacetylene) Backbones and the Helical L-Proline Oligopeptide Pendants for Enhanced Enantioseparation Properties

Y Zhou, C Zhang, J Huang, L Liu, J Bai, J Li… - Analytical …, 2024 - ACS Publications
A series of optically active helical poly (phenylacetylene) s (PPA-Pro 1, PPA-Pro 3, PPA-Pro
6, PPA-Pro 9, and PPA-Pro 12) bearing different chain lengths of L-proline oligopeptide in …