Self‐Assembled Peptide Nano‐Superstructure towards Enzyme Mimicking Hydrolysis

Yu, C. X.; Yang, Yuqin; Orr, Asuka A.; Makam, Pandeeswar; Redko, Boris; Haimov, Elvira; Wang, Yannan; Shimon, Linda J. W.; Rencus‐Lazar, Sigal; Mei, Ju; Dong, Hao; Gazit, Ehud

doi:10.1002/ange.202105830

Cited by 17 publications

(10 citation statements)

References 61 publications

(18 reference statements)

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“…Polymers, hydrogels, biomolecules, and their nanocomposites are perhaps the most widely studied materials class in present days, which show a wide variety of practical applications, including dielectric energy storage, electrode materials for supercapacitors, mechanical energy harvesting, separation membranes, and many others [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. In this regard, poly(vinylidene fluoride) (PVDF) is perhaps the most widely studied material in recent times due to its cost-effectiveness, easy synthesis procedure, and several other unique and suitable functional properties [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Metal-Organic Framework Incorporated Highly Polar PVDF for Dielectric Energy Storage and Mechanical Energy Harvesting

et al. 2023

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Here, we introduce a 2D metal-organic framework (MOF) into the poly(vinylidene fluoride) (PVDF) matrix, which has been comparatively less explored in this field. Highly 2D Ni-MOF has been synthesized in this regard via hydrothermal route and has been incorporated into PVDF matrix via solvent casting technique with ultralow filler (0.5 wt%) loading. The polar phase percentage of 0.5 wt% Ni-MOF loaded PVDF film (NPVDF) has been found to be increased to ~85% from a value of ~55% for neat PVDF. The ultralow filler loading has inhibited the easy breakdown path along with increased dielectric permittivity and hence has enhanced the energy storage performance. On the other hand, significantly enriched polarity and Young’s Modulus has helped in improving its mechanical energy harvesting performance, thereby enhancing the human motion interactive sensing activities. The piezoelectric and piezo-tribo hybrid devices made up of NPVDF film have shown improved output power density of ~3.26 and 31 μW/cm2 compared to those of the piezoelectric and piezo-tribo hybrid devices comprising of neat PVDF (output power density ~0.6 and 17 μW/cm2, respectively). The developed composite can thus be considered an excellent candidate for multifunctional applications.

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Section: Introductionmentioning

confidence: 99%

Two-Dimensional Metal-Organic Framework Incorporated Highly Polar PVDF for Dielectric Energy Storage and Mechanical Energy Harvesting

et al. 2023

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“…Host–guest crystalline materials offer new opportunity for a wide range of applications. [ 1–4 ] Metal organic frameworks (MOFs) as crystalline coordination polymers consisting of organic ligands and metal nodes, have drawn great attention for application as host platforms owing to their ligand plasticity, tunable porosity, and structure stability. [ 5–8 ] Until now, kinds of approaches, such as encapsulation of guest into MOFs during synthesis process, [ 9,10 ] framework flexibility, [ 5,11 ] post treating, [ 12,13 ] ligand exchange, [ 14 ] and aperture‐opening process [ 15 ] have been used for the preparation of MOFs based host–guest catalysts.…”

Section: Introductionmentioning

confidence: 99%

Defect‐Mediated Synergistic Effect of POM/UiO‐66(Zr) Host–Guest Catalysts for Robust Deep Desulfurization at Ambient Temperature

Zheng

Zhang

et al. 2023

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Stable platforms of host–guest catalysts are indispensable in the field of heterogeneous catalysis, however, clarifying the specific effect of host remains challenging. Herein, polyoxometalate (POM) is encapsulated in three types of UiO‐66(Zr) with different controlled densities of defects by the aperture opening and closing strategy at ambient‐temperature. It is found that catalytic activity of POM for oxidative desulfurization (ODS) at room temperature is turned on when encapsulated in the defective UiO‐66(Zr), and the sulfur oxidation efficiency shows an obvious increasing trend (from 0.34 to 10.43 mmol g−1 h−1) with the increased concentration of defects in UiO‐66(Zr) host. The as‐prepared catalyst with the most defective host displays ultrahigh performance which removed 1000 ppm sulfur with exceptionally diluted oxidant at room‐temperature within 25 min. The turnover frequency can reach 620.0 h−1 at 30 °C, which surpassed all the reported MOFs based ODS catalysts. A substantial guest/host synergistic effect mediated by the defective sites in UiO‐66(Zr) is responsible for the enhancement. Density functional theory calculations reveal that OH/OH2 capped on the open Zr sites of host UiO‐66(Zr) can decompose H2O2 to OOH group and enables the formation of WVI‐peroxo intermediates that determine the ODS activity.

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“…[ 5 ] Cyclodipeptides have expressed active biofunctions, [ 6,7 ] and also functionality as effective building units that self‐assemble into nanowires and nanocrystals. [ 8–12 ] Their semiconducting properties [ 8 ] and catalytic potentials [ 9 ] have been unveiled thanks to the complex‐side chain substitutions. The inherent chirality of amino acids endows short peptides with possibilities in constructing materials with optical activity, further expanding applications in asymmetrical synthesis, chiroptical sensing, display, and information storage.…”

Section: Introductionmentioning

confidence: 99%

Halogen Interaction Effects on Chiral Self‐Assemblies on Cyclodipeptide Scaffolds Across Hierarchy

Wang

Hao

Xing

2023

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How halogenation affects protein or peptide folding and self‐assembly hierarchically? This study tries to answer this question by using the halogen bonding mediated self‐assemblies on cyclodipeptide scaffolds. Single‐functionalized cyclodipeptides (Cyclo‐GX) based on para‐halogenated phenylalanine in the solid state form homochiral helical nanotubes via consecutive X···O bonds (X = Cl, Br, and I) independent of halogen kinds. In contrast, double‐functionalized cyclodipeptides (Cyclo‐XX) feature versatile self‐assembly architectures depending on the para‐substituents (X = H, F, Cl, Br, and I), affording nanotubular, lamellar, and triple helical nanotubular architectures. Cyclo‐BrBr exclusively adopts intramolecular Type‐IV X···X interaction that alters the molecular folding and packing, which also gives rise to opposite chirality at molecular folding (secondary structure), stacking (tertiary structure), and self‐assembled nanohelices (quarternary structure) at macroscopic scale. It unveils how halogenation impacts on the self‐assembly and chirality at hierarchical levels in specific peptides. Clusteroluminescence is found for the cyclodipeptides, achieving high quantum yield up to 71%, whereby circularly polarized luminescence is realized with tunable handedness by controlling halogen substituents.

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Self‐Assembled Peptide Nano‐Superstructure towards Enzyme Mimicking Hydrolysis

Cited by 17 publications

References 61 publications

Two-Dimensional Metal-Organic Framework Incorporated Highly Polar PVDF for Dielectric Energy Storage and Mechanical Energy Harvesting

Two-Dimensional Metal-Organic Framework Incorporated Highly Polar PVDF for Dielectric Energy Storage and Mechanical Energy Harvesting

Defect‐Mediated Synergistic Effect of POM/UiO‐66(Zr) Host–Guest Catalysts for Robust Deep Desulfurization at Ambient Temperature

Halogen Interaction Effects on Chiral Self‐Assemblies on Cyclodipeptide Scaffolds Across Hierarchy

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