This schematic categorizes helical-polymer-based CPL materials into monocomponent, multicomponent, and hybrid systems, while elucidating the pivotal mechanisms that dictate chiroptical amplification, including chirality transfer, responsive inversion, and photonic modulation. These insights provide a systemic blueprint for rational integration of high-performance chiroptical systems with tailored properties.
This review summarizes polymer-based circularly polarized luminescence (CPL) materials, focusing on chiral architectures from helical polymers and achiral polymer/chiral inducer systems. It discusses the chiral induction and amplification mechanisms, and the challenges and future application prospects in this filed.
A series of poly(m-terphenyl acetylene)s was prepared, in which large m-terphenyl units were directly linked to the polyene backbone, thereby significantly enhancing the steric repulsion between side groups to afford stretched poly(phenylacetylene)s with large conjugated lengths and near-infrared optical activity.
The ring-opening metathesis polymerization (ROMP) of a chiral monomer using a tungsten catalyst produced a highly head-to-head regio- and trans-selective polymer, unlike the cis-selective polymers from ruthenium-based catalysts. The varied stereochemistry configurations led to distinct optical activities and chiral expression of polymers derived from the same monomer.
A squaramide-directed cooperative assembly strategy was developed to construct hierarchical polymer networks by integrating 1D supramolecular nanofibers into covalent architectures. This approach effectively reconciles the trade-off between covalent robustness and supramolecular reversibility, leading to a significantly enhanced thermal stability and mechanical performance.
A conformationally constrained Bringmann’s lactone undergoes strictly alternating and controlled copolymerization with meso-epoxides using a Salen-Cr(III)-Cl/MTBD catalyst system, yielding poly(ether-alt-ester)s with a high Tg of 114 °C.
Chiral hydrogels were fabricated from helical dendronized poly(phenylacetylene)s through acylhydrazone linkage with a disulfide crosslinker. They exhibited responsiveness to temperature, pH, and redox, and possessed characteristic stabilized helicity, reversible compression, and low cytotoxicity.
Crystalline cellulose tris(3,5-dimethylphenylcarbamate) exhibited higher chiral recognition abilities with shorter retention times than amorphous derivative and Chiralcel OD. The ordered crystalline arrangement played a crucial role in chiral recognition.
Optically active helical poly(phenyl isocyanide)s bearing achiral benzanilide pendants were prepared via helix-sense-selective living polymerization. The resulting polymers, featuring controlled molecular weights and narrow distributions, exhibit excellent chiral recognition abilities, enabling their use as chromatographic enantioseparation and enantioselective crystallization materials.
Donor-functionalized helical poly(phenylacetylene)s achieved tunable circularly polarized luminescence through side-chain-to-backbone Förster resonance energy transfer (FRET). Pyrene pendants undergo chiral ordering and transfer excitation energy to the emissive helical backbone, producing an amplified film CPL with a |glum| value of 7×10−2, whereas triphenylamine pendants enable helical-conformation-responsive blue-green switching.
Four selenium-fused NIR-absorbing acceptors were developed by tailoring the molecular photoelectric properties via end-group and side-chain dual engineering. Among them, Y-SeNF-2ClO with linear side chains and asymmetric end groups showed favorable molecular packing and energy levels, which optimized the active layer morphology and suppressed energy loss, achieving a high device efficiency of 20.08%.
This work demonstrates an end-to-end neuron-inspired signal pathway built entirely from organic electrochemical transistors (OECTs), where a photosensitive receptor directly drives axonal spiking and synaptic plasticity through analog hardware coupling without algorithmic processing.
The Peclet number was first introduced as a parameter to regulate hierarchical aggregation and vertical crystallization of polymer donors, inducing ordered donor/acceptor interpenetration for controllable heterojunction construction.
Two new polymers based on thiophene-flanked pyrimidoisoindigo (T-PymII) were synthesized by copolymerizing it with thiophene and 3,4-difluorothiophene; both polymers exhibited ambipolar transport properties: P(PymII-TTT) was dominated by hole transport, while P(PymII-T-2FT-T) was dominated by electron transport.
Topology-regulated co-assembly of single-chain polymer nanoparticles and block copolymers proceeds through a stepwise pathway, forming hierarchical micelle@vesicle composite structures and offering a new strategy for constructing complex polymer assemblies.
Acetonitrile modulates BF3·OEt2-mediated styrene cationic polymerization by stabilizing the propagating carbocation, enabling access to narrowly dispersed polymers (Đ≈1.3). Chain lifetimes are further prolonged at reduced temperatures, and the protocol is generalizable to diverse styrenic monomers.
This study demonstrates the incorporation of ―CF3 enhances the processability of phenylethynyl-terminated imide (PETI) oligomers, maintains thermal and mechanical properties, and reduces high-frequency Dk and Df of the cured polyimides.
Bioinspired PLA/Zn-HA composites were prepared via melt blending method. 10 wt% sample shows optimal mechanical performance, degradation control and bioactivity, providing promising strategy for bone repair.
A green-synthesized L-cysteine-conjugated Polydopamine (PDC) nanocarriers was developed for efficient encapsulation and controlled release of emamectin benzoate (EMB). The nanocarriers exhibits pH-responsive release behavior, enhanced photostability, adhesion and insecticidal efficacy, offering a sustainable strategy in smart pesticide delivery system.
Malic acid (MA) side chains were incorporated into the polycaprolactone (PCL)-based cross-linked polyurethane. The incorporation broadened the melting transition. The sample exhibited a steadier Ract and a higher Rrec during four heating-cooling cycles. The synergistic mechanism of dynamic MA-PCL hydrogen bonding and residual crystalline domains optimized the precision of deformation and cyclic stability.
This study reports on-demand peelable UV-curable adhesives with outstanding bonding strength, hot-water-triggered debonding, and recyclable adhesion, which show great promise for electronic device recycling and sustainable manufacturing.
Sericin exhibits a protein protective function and is characterized by a high serine content, which inspired us to explore the protein-stabilizing effects of poly-β-homoserine (β-HS). β-HS effectively stabilizes proteins with varying physicochemical properties under environmental stresses, such as elevated temperature and lyophilization, highlighting its significant potential for protein stabilization.
A novel molecular design integrating flexible non-edible backbone, alicyclic rigid core, and epoxy groups breaks the performance-sustainability trade-off. The optimal plasticizer lowers Tg of poly(vinyl chloride) (PVC) by 30%, increases elongation >50-fold, and improves efficiency by 20.7% versus DOTP.
Based on ethylene defect engineering and Leveraging employing in situ synchrotron radiation X-ray scattering techniques to characterize the condensed structure, this work successfully achieved the regulation of the mechanical and optical properties of polarizing films through poly(vinyl alcohol) (PVA) structure control.
This study clarifies that in bimodal polymer mixtures with low entanglement concentrations, the crystallization morphology is strongly related to the molecular weight of the long chains. The lamellar stack structure is determined by the fraction of tie chains. The melt-memory effect has been proven to be related to intrachain interactions rather than entanglements.
Structure-tunable polyimide films enable radiative cooling (about 90% reflectivity, ΔT is about –6 °C) and solar heating (about 88.7% transmittance, ΔT is about +8 °C), while offering flame retardancy, thermal stability, and UV/acid resistance.
Poly(vinyl alcohol) (PVA)-based fiber-metal laminates reinforced with graphene (0.5 wt%–3 wt%) and TiO2 (0.5 wt%–3 wt%) were fabricated via vacuum bag molding. Graphene at 0.5 wt% and TiO2 at 2 wt% maximized tensile, flexural, and toughness properties, and reduced water absorption, while higher loadings caused property degradation.
An organic-inorganic hybrid anti-fogging coating composed of polyoxometalates and hydrophilic resin, with enhanced adhesion and cohesion, achieves high abrasion resistance, UV stability, and durable superhydrophilicity for various substrates.
The improvement in segment mobility in poly(lactic acid) enantiomer blends can effectively enhance segment miscibility during the crystallization process, thereby promoting the formation of more stereocomplex crystals in poly(lactic acid).
The sequence-encoded viscoelastic kinetics is introduced to direct non-equilibrium self-assembly pathways of multiblock copolymers and program their distinct conformation evolution, a capability that moves beyond the conventional design of static equilibrium nanostructures.
Classical density functional theory is employed to study the energy storge performance of supercapacitor with polyelectrolyte surface coating. The dielectric contrast effects between the electrode substrate and the solvent are explicitly accounted. It is found that the dielectric contrast plays a decisive role in determining the energy storage performance.
The sliding dynamics of the ring chain in rod-coil rotaxanes depend non-monotonically on the rod-coil ratio α, coil stretch μ, and ring size. Intermediate-time sub-diffusion arises from backbone heterogeneity. Diffusion is fastest on homogeneous chains and under moderate coil stretching, thereby guiding the design of tunable slide-ring materials.
High-density polyethylene (HDPE) materials blending with E-mMOS copolymers at low adding ratios (2 wt%, 5 wt% and 10 wt%) were prepared. These blends exhibited increasing tensile strength and toughness, as well as improved surface hydrophilicity. DSC and rheological measurements confirmed good processability.