Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(12), P. 4033 - 4041
Published: Jan. 1, 2023
The materials incorporating a moderate electron-donating chiral unit (BAM) closer to the chromophore and participating in frontier molecular orbitals distributions may achieve balance between large g value high fluorescence quantum yield.
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(17)
Published: March 8, 2024
Circularly polarized luminescence (CPL) plays a pivotal role in cutting-edge display and information technologies. Currently achieving precise color control dynamic signal regulation CPL still remains challenging due to the elusory relationship between fluorescence chirality. Inspired by natural mechanisms governing formation chiral interaction, we proposed an addition-subtraction principle theory address this issue. Three fluorene-based polymers synthesized Suzuki polycondensation with different electron-deficient monomers exhibit similar structures UV/Vis absorption, but distinct emissions intramolecular charge transfer. Based on this, precise-color CPL-active films are obtained through quantitative supramolecular co-assembly directed addition principle. Particularly, ideal white-emitting film (CIE coordinates: (0.33, 0.33)) is facilely fabricated high quantum yield of 80.8 % dissymmetry factor (g
Language: Английский
Citations
34
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)
Published: April 16, 2024
The precise manipulation of supramolecular polymorphs has been widely applied to control the morphologies and functions self-assemblies, but is rarely utilized for fabrication circularly polarized luminescence (CPL) materials with tailored properties. Here, this work reports that an amphiphilic naphthalene-histidine compound (NIHis) readily self-assembled into distinct chiral nanostructures through pathway-dependent polymorphism, which shows opposite multistimuli responsive CPL signals. Specifically, NIHis display assembly-induced from polymorphic keto tautomer, become predominant during enol-keto tautomerization shifting controlled by a bulk solvent effect. Interestingly, nanofiber microbelt inverted signals can be prepared same monomer in exactly compositions concentrations only changing temperature. tunable performance solid microbelts realized under multi external physical or chemical stimuli including grinding, acid fuming, heating. In particular, emission color on-off switch based on polymorph reversible heating-cooling protocol developed. This brings new approach developing smart via polymorphism engineering.
Language: Английский
Citations
21
Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(47)
Published: Sept. 8, 2022
Chiral materials related to circularly polarized luminescence (CPL) make up a rapidly developing new field that has broad application prospects in optoelectronic devices, selective recognition, biomedicine, and other fields. Biofunctional chiral are also attracting increasing attention because of their unique biocompatibility, coding. However, there been little discussion on biomolecule-based CPL till now. In this Review, the latest progress with biomolecules reviewed, including construction from molecular level giant microstructure, as well emerging applications. addition, we discuss challenges bio-based materials, hoping work will provide perspectives insights for more research.
Language: Английский
Citations
53
Cell Reports Physical Science, Journal Year: 2023, Volume and Issue: 4(2), P. 101251 - 101251
Published: Jan. 24, 2023
Biophysical cues of native extracellular matrix (ECM) can affect cellular behavior. Although static properties biomaterials have been widely explored, there is a growing interest in dynamic and interactive for the modulation behavior fate. Native ECM highly with mutual feedback between cells, which plays key role regulation development, regenerative processes, disease progression. Dynamic based on material nanoarchitectonics emulate dynamics living systems. This review introduces concept summarizes recent advances from stimuli-responsive materials toward adaptable next generation materials. The opportunities challenges this field are also discussed.
Language: Английский
Citations
41
Advanced Science, Journal Year: 2023, Volume and Issue: 10(13)
Published: Feb. 25, 2023
Chiral metal-organic frameworks (MOFs) are usually endowed by chiral linkers and/or guests. The strategy using secondary building units in MOFs for solving the trade-off of circularly polarized luminescence (CPL)-active materials, high photoluminescence quantum yields (PLQYs) and dissymmetry factors (|glum |) has not been demonstrated. This work directionally assembles predesigned silver clusters with ACQ through reticular chemistry. nanoscale chirality cluster transmits MOF's framework, where arranged a quasi-parallel manner efficiently isolated rigidified. Consequently, this backbone cluster-based demonstrates superb CPL, PLQYs 50.3%, |glum | 1.2 × 10-2 . Crystallographic analyses DFT calculations show arrangement manners emitting leading to large angle between electric magnetic transition dipole moments, boosting CPL response. As compared, an ion-pair-direct assembly without interactions induces one-ninth one-sixth PLQY values, further highlighting merits directional nets. In addition, prototype switching fabricated framework is controlled alternating ultraviolet visible light. expected inspire development chemistry high-performance chiroptical materials.
Language: Английский
Citations
30
Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(9), P. 3206 - 3212
Published: Jan. 1, 2023
Two pairs of enantiomorphic organic–inorganic hybrid manganese( ii ) halide clusters show excellent CPL properties and work as scintillators in X-ray detection imaging.
Language: Английский
Citations
28
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(44)
Published: Aug. 29, 2023
Abstract Circularly polarized organic light‐emitting diodes are of great significance in 3D displays. However, achieving circularly electroluminescence (CP‐EL) simultaneously with a large dissymmetry factor ( g EL ) and high efficiency still remains formidable challenge. Herein, facile efficient strategy is developed for improving the performance CP‐EL devices using device emitting layers chiral coassembled helix nanofiber host materials. Chiral materials (( S ‐/ R ‐2Cz) 0.2 ‐(PFpy) 0.8 could be smartly constructed through intermolecular π–π stacking interactions between achiral conjugated pyridine‐based polymer acceptor (PFpy) binaphthyl‐based donor ‐2Cz). Significantly, resulting hosts greatly promote commercially available phosphorescence emitter to achieve solution‐processed red performances at 620 nm external quantum 4.1% | value 0.014.
Language: Английский
Citations
25
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(36)
Published: June 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.
Language: Английский
Citations
18
Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(7), P. 2362 - 2372
Published: May 27, 2024
Language: Английский
Citations
15
Physical Chemistry Chemical Physics, Journal Year: 2024, Volume and Issue: 26(18), P. 13532 - 13560
Published: Jan. 1, 2024
Molecular machines are evolved through changing their field of activity while maintaining basic functions. Finally, active even includes the interface living organisms.
Language: Английский
Citations
14