Layer‐By‐Layer Chiral Induction of Fluorene‐Based Metal–Organic Framework Films for Circularly Polarized Luminescence Sensing of Enantiomers DOI
Chong Li, Xuexian Yang,

Ming‐Yi Zheng

et al.

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

Published: April 2, 2024

Abstract Developing films of chiral metal–organic frameworks (MOFs) with high circular polarization luminescence (CPL) is facing a great challenge for sensing applications. Herein, layer‐by‐layer induction method first reported to prepare enantiopure MOF CPL sensing. By the inductor camphorsulfonic acid, fluorene‐based D/L‐ZnHF‐SO 2 film (HF‐SO = 3,7‐Dibenzothiophenedicarboxylate, 5,5‐dioxide) preferential growth orientation and homogeneous surface are prepared, which shows strong feature higher asymmetry factor ±0.073. In addition, by mixed ligand approach, isostructural fluorene 9‐fluororenone‐2,7‐dicarboxylate chosen replace part HF‐SO preparing series tunable emission. Furthermore, prepared performance further utilized enantiomers The changes consisted enantioselective adsorption results showed that has good discrimination against R/S‐phenylethylamine enantiomers, reporting MOF‐based candidates application in enantiomers. This work provides facile effective approach materials performance, also gives new way achieve

Language: Английский

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

112
A Photo‐ and Thermo‐Driven Azoarene‐Based Circularly Polarized Luminescence Molecular Switch in a Liquid Crystal Host DOI Open Access
W.P. Kang, Yuqi Tang, Xianyu Meng

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(48)

Published: Aug. 31, 2023

The development of chiral optical active materials with switchable circularly polarized luminescence (CPL) signals remains a challenge. Here an azoarene-based molecular switch, (S, R, S)-switch 1 and (R, R)-switch 2, are designed prepared (R)-binaphthyl azo group as photosensitive moiety two (S)- or fluorescent molecules opposite the same handedness moieties. Both switches exhibit reversible trans/cis isomerization when irradiated by 365 nm UV light 520 green in solvent liquid crystal (LC) media. In contrast control switch is doped into nematic LCs, polarization inversion switching-off CPL achieved resultant helical superstructure upon irradiation light, respectively. Meanwhile, fluorescence intensity system basically unchanged during this switching process. particular, these variations could be recovered after heating, realizing true sense switching. Taking advantage unique switching, proof-of-concept for "a dual-optical information encryption system" based on above material demonstrated.

Language: Английский

Citations

70
Chiral metal–organic frameworks for photonics DOI
Lyndon A. Hall, Deanna M. D’Alessandro, Girish Lakhwani

et al.

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(10), P. 3567 - 3590

Published: Jan. 1, 2023

This review explores recent progress in the use of chiral metal–organic frameworks (MOFs) as platforms for circularly polarised luminescence (CPL), chiroptical switching, and second-order nonlinear optics (NLO).

Language: Английский

Citations

62
Multiple Stimuli‐Responsive Luminescent Chiral Hybrid Antimony Chlorides for Anti‐Counterfeiting and Encryption Applications DOI
Danyang Liu, Hai‐Yang Li, Runping Han

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(36)

Published: July 18, 2023

Stimuli-responsive circularly polarized luminescence (CPL) materials are ideal for information anti-countering applications, but the best-performing have not yet been identified. This work presents enantiomorphic hybrid antimony halides R-(C5 H12 NO)2 SbCl5 (1) and S-(C5 (2) showing mirror-imaged CPL activity with a dissymmetry factor of 1.2×10-3 . Interestingly, DMF-induced structural transformation is realized to obtain non-emissive ⋅ DMF (3) (4) upon exposure vapor. The process reversed heating. DFT calculations showed that DMF-induced-quenched-luminescence attributed intersection ground excited state curves on configuration coordinates. Unexpectedly, nanocrystals chiral 1 2 were prepared indicate excellent solution performance. reversible PL switching gives system applications in technology, anti-counterfeiting, encryption-decryption, logic gates.

Language: Английский

Citations

54
Host‐Guest Chemistry of Chiral MOFs for Multicolor Circularly Polarized Luminescence Including Room Temperature Phosphorescence DOI

Peng-Fu Gao,

Kun Zhang, Dan‐Dan Ren

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(26)

Published: March 17, 2023

Abstract Exploiting the chirality transfer and amplification in hierarchical chiral systems by visible accurate structures is still a challenge. Herein, pair of homochiral metal‐organic frameworks (MOFs) DCF‐12 LCF‐12 with high rigidity porosity are synthesized via reticular chemistry. Interestingly, these two enantiomers can act as nano‐containers, which four chromophores, covering acridine, pyrene, 9,10‐Bis(phenylvinyl) anthracene (BPEA), coronene be introduced situ encapsulation. Importantly, precise single crystal all guest‐loaded MOFs X‐ray diffraction technique obtained smoothly. It not only clearly reveals from host framework to achiral guest emitters through space transfer, but also circularly polarized luminescence achieved modulated synergistic effect. Extraordinarily, both pyrene@DCF‐12 pyrene@LCF‐12 exhibit fascinating multi‐color tunable room temperature phosphorescence (RTP) dynamic luminescence. Besides, RTP quantum yields pyrene@LCD‐12 up 75.39% 73.43%, exceeds most that materials. These results demonstrate serve an platform investigate mechanism prompt development CPL‐active

Language: Английский

Citations

52
Chiral Hybrid Germanium(II) Halide with Strong Nonlinear Chiroptical Properties DOI Open Access
Hebin Wang, Junzi Li,

Haolin Lu

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(41)

Published: Aug. 23, 2023

Due to the pronounced anisotropic response circularly polarized light, chiral hybrid organic-inorganic metal halides have been regarded as promising candidates for application in nonlinear chiroptics, especially second-harmonic generation circular dichroism (SHG-CD) effect. However, designing novel lead-free with large anisotropy factors and high laser-induced damage thresholds (LDT) of SHG-CD remains challenging. Herein, we develop first germanium halide, (R/S-NEA)3 Ge2 I7 ⋅H2 O (R/S-NGI), systematically investigated its linear chiroptical properties. S-NGI R-NGI exhibit (gSHG-CD ) 0.45 0.48, respectively, along a LDT 38.46 GW/cm2 ; these were highest values among reported halides. Moreover, effective second-order optical coefficient could reach up 0.86 pm/V, which was 2.9 times higher than that commercial Y-cut quartz. Our findings facilitate new avenue toward halides, their implementation applications.

Language: Английский

Citations

46
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

36
Chiral Liquid Crystalline Metal–Organic Framework Thin Films for Highly Circularly Polarized Luminescence DOI
Xuexian Yang, Na Li, Chong Li

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(23), P. 16213 - 16221

Published: May 30, 2024

Combining metal–organic frameworks (MOFs) with liquid crystals to construct crystalline MOFs (LCMOF) offers the advantage of endowing and enhancing their functionality, yet it remains a challenging task. Herein, we report chiral MOF (CLCMOF) thin films by cross-linking (CLC) realize highly circular polarization luminescence (CPL) performance photo thermal switching. By layer stilbene-containing CLC stilbene-based (CLC/MOF) film, CLCMOF were successfully obtained after UV irradiation due abundant [2 + 2] photocycloaddition. The resulted have strong chirality, obvious photochromic fluorescent, CPL (the asymmetry factor reaches 0.4). Furthermore, fluorescent thermotropic CLC, can be reversed red-shifted heating treatment, showing photo- Such MOF-based photo/thermal switching prepared patterns codes for demonstration potential application in advanced information anticounterfeit encryption. This study not only opens strategy developing combining but also new route achieve optical applications.

Language: Английский

Citations

32
Encapsulation engineering of porous crystalline frameworks for delayed luminescence and circularly polarized luminescence DOI

Xiaoyan Lu,

Kun Zhang,

Xinkai Niu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 6694 - 6734

Published: Jan. 1, 2024

Delayed luminescence (DF), including phosphorescence and thermally activated delayed fluorescence (TADF), circularly polarized (CPL) exhibit common broad application prospects in optoelectronic displays, biological imaging, encryption. Thus, the combination of is attracting increasing attention. The encapsulation guest emitters various host matrices to form host-guest systems has been demonstrated be an appealing strategy further enhance and/or modulate their luminescence. Compared with conventional liquid crystals, polymers, supramolecular matrices, porous crystalline frameworks (PCFs) metal-organic (MOFs), covalent-organic (COFs), zeolites hydrogen-bonded organic (HOFs) can not only overcome shortcomings such as flexibility disorder but also achieve ordered guests long-term stability chiral structures, providing new promising platforms for development DF CPL. In this review, we provide a comprehensive critical summary recent progress photochemistry

Language: Английский

Citations

31
Highly Efficient Sky‐Blue π‐Stacked Thermally Activated Delayed Fluorescence Emitter with Multi‐Stimulus Response Properties DOI
Shengyi Yang, Ziqi Feng, Zhiyuan Fu

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(34)

Published: June 11, 2022

Organic materials with multi-stimulus response (MSR) properties have demonstrated many potential and practical applications. Herein, a π-stacked thermally activated delayed fluorescence (TADF) material properties, named SDMAC, was designed synthesized using distorted 9,9-dimethyl-10-phenyl-9,10-dihydroacridine as donor. SDMAC possesses rigid configuration intramolecular through-space interactions exhibits aggregation-induced emission enhancement (AIEE), solvatochromic, piezochromic, circularly polarized luminescence (CPL) under different external stimuli. The molecular structure efficient TADF of can be used in displays lighting. Using an emitter, the maximum quantum efficiency (EQE) fabricated organic light-emitting diodes (OLEDs) is high 28.4 %, which make them most CP-TADF OLEDs based on charge transfer strategy. CP (CP-OLEDs) exhibit electroluminescence (CPEL) signals.

Language: Английский

Citations

62