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Emissive ionic supramolecular frameworks are designed by associating tetraphenylethylene-based tetra-cationic units and di-anionic molybdenum or tetra-anionic rhenium octahedral clusters. Obtained structures were characterized by single-crystal X-ray diffraction. The emission properties of the hybrids were investigated as dry powders or in various solvents by one photon and two photon absorption leading to a O concentration dependent luminescence color for the Mo based hybrid.
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http://dx.doi.org/10.1002/chem.202400079 | DOI Listing |
Adv Mater
September 2025
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
Helicene-based circularly polarized luminescence (CPL) materials suffer from severely low color purity in circularly polarized organic light-emitting diodes (CP-OLEDs). Here, a novel molecular engineering strategy is introduced by replacing helicene containing continuous fused benzene rings with a multiple resonance (MR) framework comprising discontinuous fused benzene rings. This approach effectively suppresses high-frequency C─C bond stretching vibrations and enhances short-range charge transfer, enabling high color purity, CPL activity, and efficient thermally activated delayed fluorescence (TADF).
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
State Key Laboratory of Chemical Resource Engineering, Beijing 100029, China.
Circularly polarized luminescence (CPL) has emerged as a critical technology for anticounterfeiting and optical display applications due to its unique chiroptical properties. We report a multicolor CPL-emitting elastomeric film (P37/PSK@SiO-PDMS) that synergistically combines chiral helical polyacetylene (P37) and a surface-engineered perovskite (PSK@SiO) through hydrogen-bond-directed assembly. Confinement within the PDMS matrix drives P37 to self-assemble into a chiral supramolecular structure through hydrogen bonding, inducing a chiroptical inversion.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
Department of Advanced Materials Engineering for Information & Electronics, Kyung Hee University, Gyeonggi-do 17104, Republic of Korea. Electronic address:
We present a supramolecular templating strategy for inducing chirality in hybrid perovskites via confined crystallization within chiral super spaces-nanoconfined, helically ordered cavities formed by the self-assembly of achiral bent-core molecules with chiral additives. Upon removal of the additives, the resulting porous films retain permanent chirality. Quasi-2D hybrid organic-inorganic perovskites crystallized within these templates exhibit distinct chiroptical activity, including mirror-image circular dichroism and circularly polarized light emitting (CPLE), with CPLE dissymmetry factors reaching up to 1.
View Article and Find Full Text PDFMikrochim Acta
September 2025
College of Chemistry, Jilin University, Changchun, 130012, China.
Tetracycline (TC) residues in animal-derived food pose a significant threat to human health, necessitating the development of straightforward and user-friendly methods for TC detection to safeguard food safety. Here, a series of novel Eu-based metal-organic frameworks (Eu-MOFs) were prepared using a dual-ligand strategy. In the midst of these Eu-MOFs, Eu-ABPDC/BPDC exhibits the dual emission at 472 and 619 nm under single-wavelength excitation, enabling highly effective ratiometric fluorescence sensing of TC.
View Article and Find Full Text PDFJ Phys Chem Lett
September 2025
State Key Laboratory of Analytical Chemistry for Life Sciences, Engineering Research Center of Photoresist Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Circularly polarized room-temperature phosphorescent (CP-RTP) materials have been attracting great attention due to their potential applications in anticounterfeiting. In this study, we designed and synthesized a host-guest copolymer () with strong phosphorescence emission and a long emission lifetime using a self-doping strategy. The co-assembled liquid crystal polymer networks / doped with demonstrated a stronger RTP emission and longer lifetime (τ = 148 ms).
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