Cell Reports Physical Science, Год журнала: 2024, Номер unknown, С. 102344 - 102344
Опубликована: Дек. 1, 2024
Язык: Английский
Light Science & Applications, Год журнала: 2024, Номер 13(1)
Опубликована: Июнь 14, 2024
Abstract Polymer-based circularly polarized luminescence (CPL) materials with the advantage of diversified structure, easy fabrication, high thermal stability, and tunable properties have garnered considerable attention. However, adequate precise tuning over CPL in polymer-based remains challenging due to difficulty regulating chiral structures. Herein, visualized full-color is achieved by doping red, green, blue quantum dots (QDs) into reconfigurable phase liquid crystal elastomers (BPLCEs). In contrast signal observed cholesteric (CLCEs), 3D cubic superstructure BPLCEs induces an opposite signal. Notably, this effect entirely independent photonic bandgaps (PBGs) results a g lum value, even without matching between PBGs emission bands QDs. Meanwhile, lattice structure can be reversibly switched via mechanical stretching force, inducing on-off switching signals, these variations further fixed using dynamic disulfide bonds BPLCEs. Moreover, smart systems for anti-counterfeiting information encryption been demonstrated, suggesting great potential BPLCEs-based active materials.
Язык: Английский
Процитировано
31
Advanced Materials, Год журнала: 2024, Номер 36(31)
Опубликована: Апрель 17, 2024
Abstract The integration of advanced functions and diverse practical applications calls for multifunctional liquid crystal elastomers (LCEs); however, the structure‐intrinsic luminescence excellent mechanical properties LCEs have not yet been explored. In this study, clusteroluminescence (CL)‐based (CL‐LCEs) are successfully fabricated without depending on large conjugated structures, thereby avoiding redundant organic synthesis aggregation‐caused quenching. experimental theoretical results reveal that secondary amine (–NH–) imine (–C = N–) groups play vital roles in determining presence fluorescence CL‐LCEs. Based above observation, strategy universalization a molecular library constructing CL‐LCEs further demonstrated. Meanwhile, dynamic bond bonds endows CL‐LCE system with rapid self‐healing under mild conditions (70 °C 10 min), stretchability, adaptive programmable characteristics. Furthermore, self‐luminescent performance enables visual detection process. Finally, CL‐based information storage anticounterfeiting realized their fiber actuators fluorescent textiles distinctive chemistry presented work has significant implications elucidating mechanism CL providing new strategies rational design novel LCE materials.
Язык: Английский
Процитировано
26
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(36)
Опубликована: Июнь 10, 2024
The fabrication of materials that can switch between circularly polarized luminescence (CPL) signals is both essential and challenging. Here, two new halogen-bonded fluorescent molecular photoswitches, namely, HB-switch 1 2, containing α-cyano-substituted diarylethene compounds with different end groups were developed. Upon exposure to specific UV or visible light wavelengths, they exhibited controllable reversible Z/E photoisomerization. When these switches integrated into blue-phase liquid crystals (BPLCs), the temperature range BP significantly expanded. Notably, system incorporating exclusively achieved polarization inversion CPL under irradiation UV/Visible during cooling/heating. photo/thermal dual-response behavior be attributed phase transition from a high-symmetry 3D Icubic lattice low-symmetry 1D helical superstructure induced by photoisomerization changes. This study underscores significance employing halogen-bond assembly strategies design switchable signals, opening possibilities for CPL-active systems.
Язык: Английский
Процитировано
16
Smart Molecules, Год журнала: 2024, Номер 2(1)
Опубликована: Фев. 29, 2024
Abstract Smart chiral liquid crystal elastomers are a class of soft photonic crystals with periodic nanostructures. There two kinds structural colors: cholesteric one‐dimensional helical nanostructure and blue‐phase three‐dimensional nanostructure. The self‐assembled can be dynamically controlled under external stimulation, the reflected color adjusted throughout visible light range. Along development innovative material systems cutting‐edge manufacturing technologies, researchers have proposed diverse strategies to design synthesize thoroughly investigated their properties potential applications. Here, we provide systematic review progress in fabrication smart elastomers, focusing on via surface‐enforced alignment, bar coating, 3D printing, anisotropic deswelling methods as well self‐assembly without additional alignment. able respond quickly stimuli wide range applications areas such adaptive optics, color‐changing camouflage, robotics, information encryption. This concludes perspective opportunities challenges for future elastomers.
Язык: Английский
Процитировано
15
Small, Год журнала: 2024, Номер unknown
Опубликована: Июнь 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.
Язык: Английский
Процитировано
12
Science China Chemistry, Год журнала: 2024, Номер 67(8), С. 2719 - 2727
Опубликована: Июль 1, 2024
Язык: Английский
Процитировано
11
Deleted Journal, Год журнала: 2024, Номер unknown
Опубликована: Окт. 15, 2024
Abstract Responsive polymers can react to surrounding environments by changing their physical and/or chemical properties. Among them, liquid crystal elastomers (LCEs) have emerged as one of the important branches in field applied polymer science due significant advantages flexible mechanics and shape memory. Manufacturing LCE fibers with a large specific surface area functional fillers has become research hotspot recent years. This type LCE‐contained fibrous composite (LCEF) exhibits not only extremely high response sensitivity but also excellent axial mechanical strength degree deformation freedom. In this paper, we provide bird's eye view developments LCEF, including structural designs, synthesis forming methods, principles modes. Furthermore, discuss advances LCEF artificial muscles, smart textiles, biomimetic systems, intelligent soft machines, followed challenges possible routes fabrications applications LCEF. At end, aim perspective for an emerging stimulus‐responsive polymeric fiber composites.
Язык: Английский
Процитировано
5
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
Процитировано
5
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 5, 2025
Abstract Photoactivated circularly polarized afterglow (CPA) exhibits broad application prospects in various optoelectronic areas due to its multidimensional emission characteristics, including wavelengths, lifetimes, and chirality. Achieving photoactivated CPA with extremely high dissymmetry factor ( g lum ) values is highly desired but considerably challenging. This work reports a bilayer assembly (R/S‐CLC‐TPB) integrating TPB@PMMA thin film the selective reflection of cholesteric liquid crystals. Initially, R/S‐CLC‐TPB no emission, while following 1 min UV irradiation, it achieves an noticeable long lifetime 125 ms value up 1.6. enhancement can be attributed oxygen consumption properties under subsequently minimizing loss triplet exciton. Furthermore, by employing triplet‐singlet Förster resonance energy transfer (TS‐FRET) strategy from organic persistent room‐temperature phosphorescence donor fluorescent dye acceptor, color successfully modulated green orange. Ultimately, these materials demonstrate promising capabilities for advanced multi‐level information encryption utilizing their tunable color, create multiple layers that selectively accessed decoded based on photoactivation chiroptical properties.
Язык: Английский
Процитировано
0
Chinese Journal of Polymer Science, Год журнала: 2025, Номер unknown
Опубликована: Фев. 18, 2025
Язык: Английский
Процитировано
0