Polymerization strategy for cellulose nanocrystals-based photonic crystal films with water resisting property

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 265, С. 130793 - 130793

Опубликована: Март 17, 2024

Язык: Английский

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A Win–Win Strategy to Fabricate Multifunctional Doping Materials from Cationic Dyes and Negatively Charged Biomass (Cellulose Nanocrystals)

ChemistrySelect, Год журнала: 2025, Номер 10(4)

Опубликована: Янв. 1, 2025

Abstract If optical probes with different sensitivity could be performed simultaneously in their hard states (e.g., film), soft gel), and solution states, sensing accuracy enhanced due to the highly mutual calibration. The biomass of cellulose nanocrystals is less compatible commonly used organo‐fluorescent dyes require chemical modification improve application performance, but this leads less‐effective material cost. In work, depending on electrostatic attractions between negatively charged polymer matrix cationic dyes, (CNCs)‐based emissive membranes were prepared by vacuum filtration method. Then, resulting materials transformed into hydrogels, or dispersed water solutions, further absorbed commercially available spheres filter papers, devices states. It worth mentioning that preparation process does not addition organic dispersants, thus greatly reducing Finally, behaviors toward several important stimuli, such as temperature, pollutants like Cr (VI) pH changes, successfully carried out. Overall, our research works highlighted a processable way fabricate fluorescent, water‐dispersible, portable, long‐time‐storable, cost‐effective sensors meet versatile requirements.

Язык: Английский

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Novel wood-based biomaterials

Elsevier eBooks, Год журнала: 2025, Номер unknown, С. 277 - 305

Опубликована: Янв. 1, 2025

Язык: Английский

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Skin-Adherent, Cellulose-Based Photonic Patch for Visual Strain Mapping

ACS Materials Letters, Год журнала: 2025, Номер unknown, С. 854 - 861

Опубликована: Фев. 4, 2025

Язык: Английский

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A Stimulus‐Responsive Optoelectronic Skin From Photonic Crystal

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Abstract In nature, the ability to regulate and transmit color signals is fundamental adaptive survival of many organisms. A key aspect this adaptability autonomous detection chromatic changes in color‐displaying structures, facilitating precise matching with environmental stimuli. However, conventional mechanochromic materials rely on a single mechanical force feedback channel, lacking continuously monitor their state real‐time. work, novel approach presented that integrates ZnS@SiO 2 photonic crystals LiCl into TEMPO‐Oxidized cellulose nanofibers‐polyacrylamide hydrogel matrix (PAM‐TOCNF hydrogel), which successfully endow conductivity variation hydrogel. This system mimics chameleonic mechanism by coupling ion conduction achieve responsive real‐time process monitoring. These findings establish new paradigm for optoelectronic systems stimulus‐responsive capabilities, paving way future advancements bio‐inspired, technologies.

Язык: Английский

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Stretchable Laminates with Tunable Structural Colors from Layered Stacks of Elastomeric, Ionic, and Natural Polymers

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Март 31, 2025

Natural polymers such as plant-derived cellulose nanocrystals (CNCs) are renowned for color iridescence due to their internal helical organization, but they show modest stretchability and bending abilities, because of the brittle nature highly crystalline needlelike nanocrystals. Herein, we report stretchable composite materials built from these branched ionic (bIPs) with terminal amine-terminated poly(N-isopropylacrylamide) (PNIPAM) stacked between elastomeric layers. These layered composites preserve high mechanical polyurethane outer layers up 150%. Furthermore, toughness increased manyfold, sequential initiation arresting concurrent transversal cracks within reinforcing central nanocomposite layer. Moreover, vivid structural colors CNC organization preserved laminated ability respond humidity temperature. We suggest that laminates nanocellulose can be considered promising candidates demanding applications robust wearable sensors, flexible optical labels, photonic devices.

Язык: Английский

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General Chiral Catalysis: A Cinchona Thiourea–Pyridoxazoline Scaffold as Both Organocatalyst and Chiral Ligand for an Enantioselective Mannich Reaction between α-Aminomaleimides and Benzothiazolimines

The Journal of Organic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

For proof of a new concept general chiral catalysis, series bifunctional catalysts integrated with both cinchona alkaloid thiourea and pyridine-oxazoline scaffolds were devised prepared. Using as independent organocatalysts, Mannich reaction between α-aminomaleimides benzothiazolimines acceptable enantioselectivities (up to 75% ee) has been disclosed. Served ligand, the organocatalyst synergically works Cu(OTf)2 catalyze in excellent 96% good yields under mild conditions even scale-up preparation. Both substrates final multifunctional adducts may provide possibility for development pharmaceutical entities ligands.

Язык: Английский

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Advances in structural color composite films based on cellulose nanocrystals

Industrial Crops and Products, Год журнала: 2024, Номер 221, С. 119294 - 119294

Опубликована: Июль 31, 2024

Язык: Английский

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Cellulose Nanocrystals are a Renewable and Biocompatible Nanocarrier of Agrochemicals Directly to Plant Cells

Advanced Sustainable Systems, Год журнала: 2023, Номер 8(5)

Опубликована: Дек. 19, 2023

Abstract More sustainable agricultural practices are critical to meeting humanity's food needs while minimizing adverse environmental impacts. Engineered nanomaterials used as nanocarriers promise reduce the volume of agrochemicals required for crop production but concerns about nanocontamination products necessitate discovery naturally occurring alternatives. Here, plant‐derived cellulose nanocrystals (CNC) a “green” alternative man‐made economical delivery plants suggested. Using confocal microscopy and fluorescently labeled CNC, it is demonstrated that CNC can successfully penetrate plant cell wall enter cells without causing any negative effects on overall phenotype, genome, metabolome. The efficiency deliver chemicals through in vitro tests involving covalently conjugated with 2,4‐dichlorophenoxyacetic acid (2,4‐D). Plant culture experiments confirmed be 2,4‐D nanocarrier reduces growth regulators needed cultivate cells. This work creates new platform cyclical where extracted from waste direct crops, thereby reducing burden created by both excess herbicides.

Язык: Английский

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A cellulose nanocrystal-based dual response of photonic colors and fluorescence for sensitive benzene gas detection

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 273, С. 132706 - 132706

Опубликована: Май 31, 2024

Язык: Английский

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