Circularly Polarized Phosphorescence Energy Transfer Combined with Chirality‐Selective Absorption for Modulating Full‐Color and White Circularly Polarized Long Afterglow DOI
Kai Yang, Run Zhang, Yanze Liu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(40)

Published: July 11, 2024

Abstract Circularly polarized long afterglow (CPLA) attracts great interests in multi‐disciplinary fields with significant potentials optical multiplexing applications, but achieving full‐color and white CPLA is still challenging. The present contribution reports the first success utilizing circularly phosphorescence energy transfer (CPP‐ET) combined chirality‐selective absorption (CSA) to construct materials. Blue luminescence dissymmetry factor ( g lum ) of 3×10 −2 firstly obtained via CSA effect chiral helical polyacetylene blue ultralong inorganic phosphor BP. Significantly, films are prepared by simply blending different fluorophores into blue‐CPLA CPP‐ET. Benefited from persistent BP, lifetimes increase nanoseconds minutes, emissions lasting for more than 20 min realized 10 −3 . Also noticeably, optoelectronic devices, multi‐dimension information encryption logic gate developed based on tunable CPLA‐active established strategy provides a universal platform future development materials applications.

Language: Английский

Mechanically Tunable Circularly Polarized Luminescence of Liquid Crystal‐Templated Chiral Perovskite Quantum Dots DOI
Xuan Zhang, Lin Li, Yuanhao Chen

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(22)

Published: March 25, 2024

Abstract Endowing perovskite quantum dots (PQDs) with circularly polarized luminescence (CPL) offers great promise for innovative chiroptical applications, but the existing strategies are inefficient in acquiring stimuli‐responsive flexible chiral films large, tunable dissymmetry factor ( g lum ) and long‐term stability. Here, we report a strategy design synthesis of luminescent cholesteric liquid crystal elastomer (Lumin‐CLCE) mechanically CPL, which is enabled by crystal‐templated self‐assembly situ covalent cross‐linking judiciously designed photopolymerizable CsPbX 3 (X=Cl, Br, I) PQD nanomonomers into elastic polymer networks. The resulting Lumin‐CLCE showcase structural color natural light noticeable CPL maximum value up to 1.5 under UV light. manipulation intensity rotation direction achieved controlling self‐assembled helicoidal nanostructure handedness soft helices. A significant breakthrough lies achievement reversible, perovskite‐based switch activated biaxial stretching, enables flexible, dynamic anti‐counterfeiting labels capable decrypting preset information specific polarization states. This work can provide new insights development advanced materials their emerging applications encryption, 3D displays, beyond.

Language: Английский

Citations

38
Polymeric Cholesteric Superhelix Induced by Chiral Helical Polymer for Achieving Full‐Color Circularly Polarized Room‐Temperature Phosphorescence with Ultra‐High Dissymmetry Factor DOI
Xujie Wang, Kai Yang, Biao Zhao

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: June 17, 2024

Abstract Circularly polarized room‐temperature phosphorescence (CPRTP) simultaneously featuring multiple colors and extremely high dissymmetry factor ( g lum ) is crucial for increasing the complexity of optical characteristics advancing further development, but such a type CPRTP still unprecedented. The present work develops an effective universal strategy to achieve full‐color with ultra‐high factors in polymeric cholesteric superhelix network, which constructed by liquid crystal polymer chiral helical (CHP). Taking advantage twisting power CHP, resulting network exhibits remarkable activity. Significantly, adopting simple double‐layered architectures consisting film phosphorescent films, blue‐, green‐, yellow‐, red‐CPRTP emissions are successfully obtained, maximum | values up 1.43, 1.39, 1.09 0.84, respectively. Further, multilevel information encryption application demonstrated based on multidimensional architectures. This study offers new insights into fabricating considerable performance advanced photonic applications.

Language: Английский

Citations

14
Circularly Polarized Phosphorescence Energy Transfer Combined with Chirality‐Selective Absorption for Modulating Full‐Color and White Circularly Polarized Long Afterglow DOI
Kai Yang, Run Zhang, Yanze Liu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: July 11, 2024

Circularly polarized long afterglow (CPLA) attracts great interests in multi-disciplinary fields with significant potentials optical multiplexing applications, but achieving full-color and white CPLA is still challenging. The present contribution reports the first success utilizing circularly phosphorescence energy transfer (CPP-ET) combined chirality-selective absorption (CSA) to construct materials. Blue luminescence dissymmetry factor (g

Language: Английский

Citations

11
Circularly Polarized Room Temperature Phosphorescence through Twisting‐Induced Helical Structures from Polyvinyl Alcohol‐Based Fibers Containing Hydrogen‐Bonded Dyes DOI
Qin Liu, Xiaoqing Liu, Xiaoxiao Yu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(29)

Published: May 8, 2024

Room temperature phosphorescence (RTP) materials have garnered significant attention owing to its distinctive optical characteristics and broad range of potential applications. However, the challenge remains in producing RTP with more simplicity, versatility, practicality on a large scale, particularly achieving chiral signals within single system. Herein, we show that straightforward effective combination wet spinning twisting technique enables continuously fabricating fibers twisting-induced helical chirality. By leveraging hydrogen bonding interactions between polyvinyl alcohol (PVA) quinoline derivatives, along rigid microenvironment provided by PVA chains, typically, Q-NH

Language: Английский

Citations

10
Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence: Generation, Enhancement, and Application DOI Open Access

Jiao Liu,

Xinyu Zhou, Xianhui Tang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 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.

Language: Английский

Citations

9
Spatiotemporal Programmability of 3D Chiral Color Units Driven by Ink Spontaneous Diffusion toward Customized Printing DOI Open Access
Wenjie Yang,

Chenglin Zheng,

Li Sun

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

Abstract Blue phase liquid crystals (BPLCs) have exhibited promising applications in 3D flexible displays due to their molecular‐level self‐assembled chiral structures, fast response, and tunable polarized colors. However, there remain challenges for spatiotemporal programming of color units BPLC dynamic patterning. Herein, the programmable temporal evolution micrometer‐scale spatial configuration switch modes are achieved by spontaneous ink diffusion‐driven asymmetric lattice deformation dual‐chiral polymer‐templated blue phases. Custom‐printed colorful patterns designed machine learning‐assisted parameter optimization, which multidimensional encrypted information that incorporates evolving colors (wavelength), distribution (depth), (L/R). The quantitative relationship between diffusion kinetics blue‐phase structural optics is established situ characterization, finite element analysis, mathematical geometry modeling. This work provides insights into microgeometric manipulation BPLCs application security self‐adaptive indicators.

Language: Английский

Citations

8
Mechanically Tunable Circularly Polarized Luminescence of Liquid Crystal‐Templated Chiral Perovskite Quantum Dots DOI
Xuan Zhang, Lin Li, Yuanhao Chen

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(22)

Published: March 25, 2024

Abstract Endowing perovskite quantum dots (PQDs) with circularly polarized luminescence (CPL) offers great promise for innovative chiroptical applications, but the existing strategies are inefficient in acquiring stimuli‐responsive flexible chiral films large, tunable dissymmetry factor ( g lum ) and long‐term stability. Here, we report a strategy design synthesis of luminescent cholesteric liquid crystal elastomer (Lumin‐CLCE) mechanically CPL, which is enabled by crystal‐templated self‐assembly situ covalent cross‐linking judiciously designed photopolymerizable CsPbX 3 (X=Cl, Br, I) PQD nanomonomers into elastic polymer networks. The resulting Lumin‐CLCE showcase structural color natural light noticeable CPL maximum value up to 1.5 under UV light. manipulation intensity rotation direction achieved controlling self‐assembled helicoidal nanostructure handedness soft helices. A significant breakthrough lies achievement reversible, perovskite‐based switch activated biaxial stretching, enables flexible, dynamic anti‐counterfeiting labels capable decrypting preset information specific polarization states. This work can provide new insights development advanced materials their emerging applications encryption, 3D displays, beyond.

Language: Английский

Citations

7
Unveiling the potential of triphenylphosphine salts in tuning organic room temperature phosphorescence DOI
Yiming Zhang,

Xiaomei Wu,

Shujuan Liu

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(70), P. 9328 - 9339

Published: Jan. 1, 2024

This article summarizes the potential of TPP salts in tuning RTP properties and their applications multi-level information encryption, high-level anticounterfeiting tags, X-ray scintillators.

Language: Английский

Citations

7
Light‐Dynamic Chirality Inversion of Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence Enabled by Soft Helical Superstructure DOI

Jiao Liu,

Zhen‐Peng Song,

Juan Wei

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 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

Language: Английский

Citations

1
From nano to macro: Light‐driven chiral dopants in liquid crystals DOI Creative Commons
Yang Zhang, Ruoling Liu, Jiawen Chen

et al.

Deleted Journal, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Harnessing nanoscale molecular structural changes to achieve precise control over macroscopic devices represents an emerging and effective strategy. One promising approach involves the introduction of light‐driven chiral dopants into liquid crystals (LCs), enabling fine‐tuned modulation helical superstructures in cholesteric (CLCs) via photoisomerization. This strategy opens up exciting possibilities for development innovative photo‐responsive with dynamic functionalities. review focuses on most common used LCs, including azobenzene, diarylethene, α ‐cyanostilbene overcrowded alkene. The chemical design principles these four types switches are highlighted, along their abilities induce pitch inversion CLCs. Finally, applications controlling showcased, particularly display technologies, anti‐counterfeiting, optical 3D droplet manipulation. It is hoped that this provides valuable insights guidances novel advancement soft matter material applications.

Language: Английский

Citations

1