Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Spherical chiral polyrotaxanes (CPRs) with steerable circularly polarized luminescence (CPL) are intriguing as advanced chiroptical materials but have not been reported to date. Here, we constructed spherical chiral polyrotaxane (CPR) materials with steerable CPL by utilizing cyclodextrins (α-, β-, or γ-CyD) as the chiral wheel. Importantly, the structure and the CPL performance of the CPR materials can be regulated by varying the feeding amount and the type of cyclodextrin (α-, β-, or γ-CyD). It was found that the spherical reticular frame and the chiral polyrotaxane structure were indispensable for CPL generation of spherical CPRs due to the strengthening of confined chirality transfer, as shown by structural and spectral characterization. Remarkably, spherical β-CyD/CPR at feed = 4, 8, and 16 showed a higher quantum yield and a longer photoluminescence lifetime in comparison with those of α-CyD/CPR and γ-CyD/CPR. This work demonstrates an example of a CPL-active spherical CPR and provides insight into macrocyclic size-dependent CPL generation through a mechanically interlocked strategy and covalent reticular chemistry, which will be helpful for the future design of high-performance CPL materials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d5nr01179e | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Uniform spherical chiral polyrotaxanes with steerable circularly polarized luminescence.
Nanoscale
September 2025
IGCME, PCFM Lab, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China.
Spherical chiral polyrotaxanes (CPRs) with steerable circularly polarized luminescence (CPL) are intriguing as advanced chiroptical materials but have not been reported to date. Here, we constructed spherical chiral polyrotaxane (CPR) materials with steerable CPL by utilizing cyclodextrins (α-, β-, or γ-CyD) as the chiral wheel. Importantly, the structure and the CPL performance of the CPR materials can be regulated by varying the feeding amount and the type of cyclodextrin (α-, β-, or γ-CyD).
View Article and Find Full Text PDFGeometric frustration in twist-bend nematic droplets.
Soft Matter
September 2025
School of Physics, UNSW, Sydney, NSW 2052, Australia.
Liquid crystals formed of bent-core molecules are exotic materials that exhibit the twist-bend nematic phase. This arises when an energetic preference for nonzero local bend distortion is accommodated twist in the texture, resulting in properties synonymous with both smectics and cholesterics. Here we describe how the frustration inherent to the twist-bend phase can be exacerbated by confinement and boundary anchoring.
View Article and Find Full Text PDFScattering Characteristics of a Circularly Polarized Bessel Pincer Light-Sheet Beam Interacting with a Chiral Sphere of Arbitrary Size.
Micromachines (Basel)
July 2025
School of Physics, Xidian University, Xi'an 710071, China.
The scattering interaction between a circularly polarized Bessel pincer light-sheet beam and a chiral particle is investigated within the framework of generalized Lorenz-Mie theory (GLMT). The incident electric field distribution is rigorously derived via the vector angular spectrum decomposition method (VASDM), with subsequent determination of the beam-shape coefficients (BSCs) pmnu and qmnu through multipole expansion in the basis of vector spherical wave functions (VSWFs). The expansion coefficients for the scattered field (AmnsBmns) and interior field (AmnBmn) are derived by imposing boundary conditions.
View Article and Find Full Text PDFRecent advances in chiral nanoparticle superstructures with long-range order.
Chem Commun (Camb)
August 2025
Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China.
Long-range ordered chiral nanoparticle superstructures, formed colloidal self-assembly, exhibit geometrically asymetric structures-such as helices, twisted arrangements, or lattices with low-symmetry space groups-endowed with distinctive chiroptical properties. This review highlights that spherical inorganic nanoparticles typically require chiral templates (, supramolecular polymers, DNA, proteins or liquid crystals) to induce asymmetric spatial organization. In contrast, anisotropic inorganic nanoparticles (, nanorods, tetrahedra, or nanodumbbells) can achieve chiral assembly both with and without templates, the latter driven by interfacial directional forces or geometric curvature matching.
View Article and Find Full Text PDFOne-pot construction of monodisperse core-shell silica microsphere with quinine-containing hybrid fibrous shell for racemates separation.
Anal Chim Acta
October 2025
Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China. Electronic address:
Background: The traditional chiral stationary phases (CSPs) preparation process involved two main parts: matrix microsphere structure regulation and surface bonding of chiral selector, demonstrating cumbersome preparation steps and long time consumption, while the currently spherical chiral hybrid CSPs could easily solve this problem by using chiral selectors as silicone precursors to participate in hybridization of CSPs directly, the preparation efficiency would be significantly improved, while the development of chiral hybrid core-shell silica CSPs with excellent monodispersity, uniform shell thickness and suitable pore structure was a challenging problem.
Results: In this work, an oil-water bi-phase method was been precisely designed to fabricate the sub-2 μm core-shell silica microspheres with quinine-containing hybrid fibrous shell (SiO@SiO-t-BuCQN) in one-pot process, the hybrid shell thickness and specific surface area were measured about 171 nm and 120.4 m g.