Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence: Generation, Enhancement, and Application

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 16, 2024

Abstract Circularly polarized luminescent (CPL) materials have garnered tremendous attention owing to their expanded optical properties beyond emission wavelength and intensity. Among these, the emerging circularly organic ultralong room‐temperature phosphorescence (CP‐OURTP) materialsdemonstrating elegant distinct features are of significant importance for extended lifetime, which represent a novel frontier in research with promising scientific technological applications across diverse fields. This review systematically outlines traditional strategies achieve CP‐OURTP including crystals, copolymerization, host–guest doping, combination copolymerization spinning twisting technology, supramolecular polymer assembly. Importantly, recent progress chiral soft materials, such as liquid crystals (LCs) involving lyotropic LCs (cellulose nanocrystals, CNCs) thermotropic (cholesteric LC elastomers), is showcased. Finally, practical summarized, concludes perspectives on current challenges future opportunities materials. aims inspire further innovations fabrication advanced enrich applications.

Язык: Английский

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Pressure‐Induced Inversion of Chiroptical Properties in Cholesteric Assembled Cellulose Nanocrystals

Advanced Optical Materials, Год журнала: 2024, Номер 12(16)

Опубликована: Фев. 14, 2024

Abstract Dynamic manipulation of the chiroptical effect, particularly inversion chiral signal, has attracted broad attention, but still remains challenging, Here, stepwise tuning helicoidal assembly and properties cellulose nanocrystal (CNC) films utilizing high pressure are demonstrated. With in situ monitoring, changes Fourier‐transform infrared (FTIR) spectra evaluating corresponding applied energy, three distinctive stages clearly identified. In these stages, photonic bandgap CNC film exhibits a fast‐slow–fast alteration over different energy imposed. The associated sequentially with interlayer space reduction, hydrogen bonding reconfiguration, covalent bands changing. A switch signal from left‐ to right‐handedness is observed third stage, handedness CD can be recovered upon release, which barely observed. This unique property suspected change CNCs induced by molecular‐level conformational change. work sheds light on fundamental understanding how trigger hierarchical performance, facilitating design pre‐programmed triggering bio‐photonic materials.

Язык: Английский

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Natural polysaccharide-based room-temperature phosphorescence materials: Designs, properties, and applications

Progress in Materials Science, Год журнала: 2024, Номер 148, С. 101372 - 101372

Опубликована: Сен. 6, 2024

Язык: Английский

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Magnetic circularly polarized luminescence in Fe2+-sensitized YbPO4: Phase transition, energy transfer and magneto-optical effect

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 687, С. 168 - 188

Опубликована: Фев. 7, 2025

Язык: Английский

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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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Dynamic Chirality in Nature-Inspired Photonic Crystal Films: Ultralong Room Temperature Phosphorescence and Stimuli-Responsive Circularly Polarized Luminescence

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Circularly polarized luminescence (CPL) systems exhibiting room-temperature phosphorescence (RTP) are attracting considerable attention for applications in information encryption and smart sensing. However, achieving ultralong circularly RTP (CPRTP) with tunable chirality stimuli-responsive CPL remains challenging. Inspired by the color-changing properties of Troides magellanus butterfly, we developed a cellulose nanocrystal (CNC)-based photonic crystal film an lifetime 2.04 s. The helical pitch could be engineered adding different amounts glucose, leading to 3-fold 4-fold enhancement fluorescence quantum yields, respectively, compared samples without glucose. system exhibited green afterglows lasting over 4 s bandgap (PBG) that modulated chiroptical properties, high glum values −0.749 −0.650 phosphorescence. Additionally, demonstrated features such as humidity-responsive solvent-responsive CPL. Therefore, biomimetic offers promising opportunities multilevel anticounterfeiting, security, sensing applications.

Язык: Английский

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Light‐Dynamic Chirality Inversion of Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence Enabled by Soft Helical Superstructure

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 27, 2025

Abstract Dynamic and reversible manipulation of circularly polarized luminescence (CPL) in soft materials is highly desirable for advanced chiroptical devices, information encryption, labeling technology. However, this remains a formidable challenge organic ultralong room‐temperature phosphorescence (CP‐OURTP) materials. Herein, bilayered chiral‐switchable CP‐OURTP system presented, composed light‐driven hydrazone photoswitch (M1)‐doped helical superstructure layer room temperature (RTP) polymer layer, enabling dynamic chirality inversion manner under alternating stimulation 460 340 nm light irradiation. The obtained film exhibits with maximum absolute dissymmetry factor ( g lum ) value 0.39 long‐lived emission lifetime 823 ms. Notably, the values can be dynamically reversibly modulated between +0.30 and−0.35 irradiation different wavelengths over 50 cycles without fatigue, owing to photoinduced configuration changes M1, making first example regulating

Язык: Английский

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Emergent Nonreciprocal Dual Circularly Polarized Luminescence from an Iridescent Cellulose Nanocrystalline Film

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Март 13, 2025

Ubiquitous chirality has attracted increasing attention because of its unique scientific significance. Moreover, circularly polarized (CP) absorption and emission, which are the essential components chiral optics, have received considerable interest from researchers. However, very few studies been conducted on materials with nonreciprocal CP emission that emit light opposite handedness their two surfaces. Here, we present a novel film developed cellulose nanocrystalline (CNC). A sustainable CNC twisted right-handedness to inherent left-handed nematic structure is by rotation-induced dynamic self-assembly strategy; this not only ambidextrously reflects left- right-handed but also clearly exhibits tunable Janus chiroptical activity, i.e., anisotropic Both orientation factor reflected wavelength maximum reflectivity significantly depend rotation rate direction. In particular, for first time shows feature luminescence (CPL) achieved through pH-regulated doping cadmium telluride quantum dots. This rare CPL phenomenon broken reciprocity in highly desired next-generation electronics photonics immense potential.

Язык: Английский

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Helical columnar phase of mesogen-jacketed liquid crystal polymers for efficient circularly polarized luminescence

Journal of Materials Chemistry C, Год журнала: 2024, Номер 12(16), С. 5896 - 5907

Опубликована: Янв. 1, 2024

A copolymerization strategy for preparing mesogen-jacketed liquid crystal polymers with stable and good circularly polarized luminescence was developed in this paper.

Язык: Английский

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Interplay of Circularly Polarized Light with Molecular and Structural Chirality: Chiral Lanthanide Complexes and Cellulose Nanocrystals

Advanced Optical Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 17, 2024

Abstract The interaction of circularly polarized (CP) light with chiral matter at different scales opens several possibilities manipulation in photonic and electronic devices. Here it is shown that a multilayer architecture, possible to take advantage the polarization‐selective reflection nematic arrangement cellulose nanocrystals strong intrinsic CP luminescence (CPL) various bands Eu complexes. In this way, both CPL total emission complex are modified depending on enantiomer applied detection geometry. This concept may apply for polarization control devices optical cavities.

Язык: Английский

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