Top-down approach for easy processing, cost-effective, biodegradable chiral photonic materials with spontaneous circularly polarized room-temperature phosphorescence activity

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160357 - 160357

Опубликована: Фев. 1, 2025

Язык: Английский

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A universal strategy for multicolor organic circularly polarized afterglow materials with high dissymmetry factors

Proceedings of the National Academy of Sciences, Год журнала: 2025, Номер 122(18)

Опубликована: Апрель 29, 2025

Materials with pure organic circularly polarized afterglow (CPA) have attracted significant attention due to their spatiotemporal-resolved optical properties, yet achieving simultaneous high dissymmetry factor (glum) and multicolor ultralong emission remains a challenge. Here, we establish universal energy transfer-photon coupling strategy realize CPA spanning from blue red record-high glum (up 1.90) lifetimes (>6 s). Systematic characterization of nonchiral donor–acceptor systems (TP-BPEA, TP-Fluo, etc.) reveals the absence ground-state chiral centers ( g CD ≈ 0) orientation artifacts LD < 10 −7 ), confirming key role cholesteric liquid crystal polymer in chirality induction. This spatiotemporal synergy between transfer (wavelength modulation) photonic engineering (polarization control) provides framework for materials, potential implications multidimensional information encryption.

Язык: Английский

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Unveiling and Refining an Interfacial-Resonant Exciplex for Ultrathin Emitters in High-Efficiency Organic Light-Emitting Diodes

ACS Materials Letters, Год журнала: 2025, Номер unknown, С. 2397 - 2405

Опубликована: Май 23, 2025

Язык: Английский

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Modulating the Embedding Position of Nitrogen Atom in [5]Helicene:the Design of Hot-Exciton Materials

Journal of Luminescence, Год журнала: 2025, Номер unknown, С. 121328 - 121328

Опубликована: Май 1, 2025

Язык: Английский

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Achieving Ultralong Room-Temperature Phosphorescence Via Single-Bond Locking Planarization Strategy

ACS Materials Letters, Год журнала: 2024, Номер 6(12), С. 5384 - 5391

Опубликована: Ноя. 8, 2024

Ultralong room-temperature phosphorescence (URTP) materials have been widely studied due to their broad applications. However, achieving phosphorescent with ultralong lifetimes is engaging and challenging. In this work, the indolo[3,2,1-j,k]carbazole (ICZ) excellent planarity obtained through twice single-bond locking on triphenylamine (TPA). Doping ICZ into a rigid matrix, URTP lifetime of 3.24 s photoluminescence quantum yield 37.37% successfully prepared.. The analysis single-crystal, temperature-dependent photophysical characterization, Huang–Rhys factor, theoretical calculations demonstrates that it possible make molecules more planar by locking, which can inhibit structural relaxation excited state thus reduce nonradiative transition generate URTP. addition, we achieve full-color afterglow energy transfer. potential applications anticounterfeiting optoelectronic information display these conducted. This work an important reference for construction materials.

Язык: Английский

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A Universal Strategy for Multi-Color Organic Circularly Polarized Afterglow Materials with High Dissymmetry Factor

Опубликована: Авг. 28, 2024

Materials with pure organic circularly polarized afterglow (CPA) are notable for their multi-dimensional optical characteristics due to time-dependent and polarization properties. These attributes endow them exceptional appeal value in the realms of information storage anti-counterfeiting measures. Currently, there limited studies on multi-color CPA materials both high dissymmetry factor (glum) values long lifetimes. Here, we propose a universal strategy prepare spanning from blue red, an ultralong emission lifetime over 6 s glum up 100 (the highest was 1.90). This leverages mechanism radiative energy transfer selective reflection cholesteric liquid crystals. Through multi-layered assembly, our method offers simple means constructing encryption.

Язык: Английский

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圆偏振发光材料的手性反转

Scientia Sinica Chimica, Год журнала: 2024, Номер 54(8), С. 1233 - 1249

Опубликована: Май 27, 2024

Circularly polarized luminescent (CPL) materials have attracted widespread attention due to their potential applications in various fields such as 3D display, photoelectric devices, chiral sensors, and asymmetric synthesis.Constructing high-performance CPL with tunable handedness direction is essential for fulfilling the practical application demands diverse domains.This review summarizes research progress on achieving chirality inversion of through stimuli, including light, temperature, solvent, pH ions.It further briefly discusses inversion, well remaining challenges future trends this area.

Язык: Английский

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Artificial light-harvesting system with sequential energy transfer in photocatalytic C P coupling based on supramolecular organic framework of triphenylamine

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 680, С. 587 - 595

Опубликована: Ноя. 6, 2024

Язык: Английский

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