Tunable circular polarization room temperature phosphorescence with ultrahigh dissymmetric factor by cholesteric liquid crystal elastomers DOI Creative Commons

Qingyan Fan,

Ziyuan Li,

Kangde Jiang

et al.

Cell Reports Physical Science, Journal Year: 2023, Volume and Issue: 4(10), P. 101583 - 101583

Published: Sept. 15, 2023

It is highly demanded that organic functional materials can generate strong and switchable circularly polarized room temperature phosphorescence (CPRTP) be developed. Here, we report a simple effective strategy to achieve mechanical-tunable CPRTP with high luminescence dissymmetric factors (glum) by doping bulky phosphorescent guest, tetra-N-phenylbenzidine (TPB), into reconfigurable cholesteric liquid crystal elastomers (CLCEs). The amount of chain extender plays vital role in determining the lifetime mechanical properties constructed CLCE composite films. Both experimental theoretical results reveal TPB compensates for insufficient rigidity CLCEs, resulting long-afterglow CPRTP. Moreover, glum tuned from 0.93 near zero stretching CLCEs. Combining CLCEs' network remarkable CPRTP, 4D encryption luminescent barcode established, exhibiting great potential information storage these distinct materials.

Language: Английский

Frontiers in circularly polarized luminescence: molecular design, self-assembly, nanomaterials, and applications DOI
Zhongliang Gong, Xuefeng Zhu, Zhonghao Zhou

et al.

Science China Chemistry, Journal Year: 2021, Volume and Issue: 64(12), P. 2060 - 2104

Published: Nov. 10, 2021

Language: Английский

Citations

437
Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence DOI Creative Commons
Xuan Zhang,

Yiyi Xu,

Cristian Valenzuela

et al.

Light Science & Applications, Journal Year: 2022, Volume and Issue: 11(1)

Published: July 14, 2022

Chiral nanomaterials with intrinsic chirality or spatial asymmetry at the nanoscale are currently in limelight of both fundamental research and diverse important technological applications due to their unprecedented physicochemical characteristics such as intense light-matter interactions, enhanced circular dichroism, strong circularly polarized luminescence. Herein, we provide a comprehensive overview state-of-the-art advances liquid crystal-templated chiral nanomaterials. The chiroptical properties touched, design principles bottom-up synthesis strategies discussed. Different functional based on liquid-crystalline soft templates, including plasmonic luminescent nanomaterials, systematically introduced, underlying mechanisms, properties, potential emphasized. This review concludes perspective emerging applications, challenges, future opportunities fascinating can not only deepen our understanding fundamentals soft-matter chirality, but also shine light development advanced toward versatile optics, biology, catalysis, electronics, beyond.

Language: Английский

Citations

180
Circularly polarized luminescent self‐organized helical superstructures: From materials and stimulus‐responsiveness to applications DOI Creative Commons
Yan-Rong He, Siyang Lin, Jinbao Guo

et al.

Aggregate, Journal Year: 2021, Volume and Issue: 2(6)

Published: Oct. 22, 2021

Abstract Circularly polarized luminescence (CPL) has gained considerable attention in various systems and rapidly developed into an emerging research field. To meet the needs of actual applications diverse fields, a high dissymmetry factor ( g lum ) tunable optical performance CPL would be most urgent pursuit for researchers. Accordingly, many materials strategies have been to address these critical issues. Emissive cholesteric liquid crystals (CLCs), that is, luminescent self‐organized helical superstructures, are considered ideal candidates constructing CPL‐active materials, as they not only exhibit values, but also enable flexible control CPL. This review mainly summarizes characteristics based on CLCs bulk phase doped with different emitters, including aggregated induced emission molecules, conventional organic small polymer metal–organic complex nanoparticles. In addition, recent significant progress stimulus‐responsive emissive terms several types stimuli, light, electricity, temperature, mechanical force, multiple stimuli is presented. Finally, short perspective opportunities challenges associated CLC field provided. anticipated offer new insights guidelines developing CLC‐based broader applications.

Language: Английский

Citations

147
Liquid Crystal Assembly for Ultra-dissymmetric Circularly Polarized Luminescence and Beyond DOI
Yue Wu, Mengqi Li, Zhigang Zheng

et al.

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(24), P. 12951 - 12966

Published: June 5, 2023

Circularly polarized luminescence (CPL) is attracting much interest because it can carry extensive optical information. CPL shows left- or right-handedness and be regarded as part of high-level visual perception to supply an extra dimension information with regard regular light. A key meeting the needs for practical applications develop emerging field ultra-dissymmetric CPL. Chiral liquid crystal (LC) assemblies─otherwise referred cholesteric crystals (CLCs)─are essentially organized helical superstructures a highly ordered one-dimensional orientation, distinctly superior supramolecules. CLCs achieve perfect equilibrium molecular short-range interaction long-range orientational order, enabling molecule-scale chirality on pitch observable scale. LC assembly could ideal strategy amplifying chirality, making accessible Herein, we focused some basic but important issues regarding CPL: (i) How created from chiral dyes? (ii) Is luminescent dyes essential factor generation CPL? That is, all emit vice versa? (iii) transferred within intermolecular systems, what principles transmission should followed? Given these queries our work, in this Perspective discuss generation, transmission, modulation assembly, aiming design build up novel chiroptical materials. Recent CPL-active microstructures three-dimensional displays, circularly lasers, asymmetric catalysis are also discussed.

Language: Английский

Citations

116
Processable circularly polarized luminescence material enables flexible stereoscopic 3D imaging DOI Creative Commons
Mingjiang Zhang, Qi Guo, Zeyi Li

et al.

Science Advances, Journal Year: 2023, Volume and Issue: 9(43)

Published: Oct. 25, 2023

Endowing three-dimensional (3D) displays with flexibility drives innovation in the next-generation wearable and smart electronic technology. Printing circularly polarized luminescence (CPL) materials on stretchable panels gives chance to build desired flexible stereoscopic displays: CPL provides unusual optical rotation characteristics achieve considerable contrast ratio wide viewing angle. However, lack of printable, intense suitable for processing hinders implementation 3D devices. Here, we report a controllable macroscopic production printable CPL-active photonic paints using designed confining helical co-assembly strategy, achieving maximum dissymmetry factor (glum) value 1.6. We print customized graphics meter-long luminous coatings these range substates such as polypropylene, cotton fabric, polyester fabric. then demonstrate textile display panel two printed sets pixel arrays based orthogonal emission, which lays an efficient framework future intelligent clothing.

Language: Английский

Citations

105
Chiral-Induced Ultrathin Covalent Organic Frameworks Nanosheets with Tunable Circularly Polarized Luminescence DOI
Hao Chen, Zhi‐Gang Gu, Jian Zhang

et al.

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(16), P. 7245 - 7252

Published: April 1, 2022

Development of covalent organic frameworks (COFs) with circularly polarized luminescence (CPL) is still challenging. Here we first reported ultrathin COFs nanosheets (NS) based CPL materials using a chiral induced-synthesis strategy. Chiral amines served as inducers to give COF TpBpy chirality and participated in the modification TpBpy, inhibiting fluorescence quenching caused by π-π stacking form luminescent (chirCOFs) NS. The obtained chirCOFs R-/S-TpBpy NS had strong intense red property |glum| ∼0.02. Afterward, carboxyl containing green blue fluorescent dye molecules were postmodified onto (chirCOFs/Dyes) achieve color-adjustable CPL. Due energy transfer between groups, chirCOFs/Dyes showed increased tunable photoluminescence, exhibiting excellent, tunable, amplified performance maximum ∼0.1, which was ∼5 times stronger than that as-prepared Moreover, corresponding dispersed into polydimethylsiloxane (PDMS) matrix wafer size, highly transparent, flexible COFs/PDMS films for practical application. This study opens new strategy prepare induction provides approach preparation large composite optical applications.

Language: Английский

Citations

101
Circularly polarized luminescence in chiral orientationally ordered soft matter systems DOI Creative Commons
Jiao Liu,

Zhen‐Peng Song,

Luyao Sun

et al.

Deleted Journal, Journal Year: 2023, Volume and Issue: 1(1)

Published: July 23, 2023

Abstract Circularly polarized luminescent (CPL) materials have received significant attention in the field of fundamental science recently. These offer substantial advancement technological applications, such as optical data storage, displays, and quantum communication. Various strategies been proposed self‐assembled consisting inorganic, organic, hybrid systems, particularly chiral orientationally ordered soft matter systems (e.g., liquid crystals (LCs) LC polymers). However, developing scientific approaches to achieve pronounced steerable circularly light emission remains challenging. Herein, we present a comprehensive review on recent development CPL based LCs, including thermotropic LCs (cholesteric bent‐core LCs), lyotropic (nanocellulose polyacetylene‐based polymers LC‐based polymers, helical nanofibers, network). In addition, mechanisms, design principles, potential applications these are systematically reviewed. This summarizes with prospect latent challenges, which can strengthen our understanding basic principles provide new insight into progress several fields, chemistry, science, optics, electronics, biology.

Language: Английский

Citations

99
Carbon Dots with Blue‐to‐Near‐Infrared Lasing for Colorful Speckle‐Free Laser Imaging and Dynamical Holographic Display DOI
Yongqiang Zhang, Jinping Wang, Lu Wang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(31)

Published: May 5, 2023

Abstract As a new solution‐processable laser material, carbon dots (CDs) offer advantages of non‐toxicity, low‐cost, and high‐stability, which are conducive to the sustainable development miniaturized lasers. Full‐color CDs (FC‐CDs) with bright‐blue, green, yellow, red, deep‐red, near‐infrared (NIR) fluorescence prepared. Their photoluminescence emission ranges from 431 714 nm. The FC‐CDs show narrow full widths at half maximum in range 44–76 nm, concurrent high radiative transition rates ( K R ) 0.54–1.74 × 10 8 s −1 ; their performance is comparable that organic dyes, indicating good gain potential for Laser pumping gives outputs 467.3, 533.5, 577.4, 616.3, 653.5, 705.1 spanning blue NIR region, covering 140% NTSC color gamut. Q‐factors (2000–5500), appreciable coefficients (9–21.5 cm ), better stability (≈100%@4–7 h) than commercial dyes. These excellent properties make them suitable high‐quality, colorful, speckle‐free imaging dynamic holographic display. findings will be helpful promoting practical applications CD‐based

Language: Английский

Citations

81
Lasing of carbon dots: Chemical design, mechanisms, and bright future DOI Creative Commons
Yongqiang Zhang, Siyu Lu

Chem, Journal Year: 2023, Volume and Issue: 10(1), P. 134 - 171

Published: Oct. 19, 2023

Language: Английский

Citations

73
Mechanically Responsive Circularly Polarized Luminescence from Cellulose Nanocrystal‐based Shape‐Memory Polymers DOI Creative Commons
Mingcong Xu, Xu Zhen, Miguel A. Soto

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(29)

Published: April 6, 2023

Stimulus-responsive materials that display circularly polarized luminescence (CPL) have attracted great attention for application in chiral sensors and smart displays. However, due to difficulties the regulation of structures, fine control CPL remains a challenge. Here, it is demonstrated cellulose nanocrystal shape-memory polymers (CNC-SMPs) with luminescent components enable mechanically responsive CPL. The nematic organization CNCs material gives rise photonic bandgap. By manipulating bandgap or wavelengths CNC-SMPs, precise emission varied high dissymmetry factors (glum ) achieved. Specifically, can be switched reversibly by treating CNC-SMPs hot-pressing recovery heating. Pressure-responsive tunable glum values ascribed pressure-responsive bandgaps. Moreover, colorimetric CPL-active patterns are created imprinting desired forms into SMP samples. This study demonstrates novel way fabricate systems using biomaterials.

Language: Английский

Citations

58