Chemistry Africa, Год журнала: 2022, Номер 6(5), С. 2219 - 2236
Опубликована: Дек. 1, 2022
Язык: Английский
Chemical Reviews, Год журнала: 2023, Номер 123(23), С. 12595 - 12756
Опубликована: Ноя. 27, 2023
Widespread concerns over the impact of human activity on environment have resulted in a desire to replace artificial functional materials with naturally derived alternatives. As such, polysaccharides are drawing increasing attention due offering renewable, biodegradable, and biocompatible feedstock for nanomaterials. In particular, nanocrystals cellulose chitin emerged as versatile sustainable building blocks diverse applications, ranging from mechanical reinforcement structural coloration. Much this interest arises tendency these colloidally stable nanoparticles self-organize water into lyotropic cholesteric liquid crystal, which can be readily manipulated terms its periodicity, structure, geometry. Importantly, helicoidal ordering retained solid-state, an accessible route complex nanostructured films, coatings, particles. review, process forming iridescent, structurally colored films suspensions (CNCs) is summarized mechanisms underlying chemical physical phenomena at each stage explored. Analogy then drawn (ChNCs), allowing key differences critically assessed strategies toward coloration presented. progress translating technology academia industry summarized, unresolved scientific technical questions put forward challenges community.
Язык: Английский
Процитировано
82
Advanced Science, Год журнала: 2022, Номер 10(5)
Опубликована: Дек. 11, 2022
Exploring high-safety but convenient encryption and decryption technologies to combat threats of information leakage is urgently needed remains a great challenge. Here, synergistically time- temperature-resolved coding/decoding solution based on functional photonic inks demonstrated. Encrypted messages can be stored into multiple channels with dynamic-color patterns, only enabled at appointed temperature time points. Notably, the ink easily processed quick-response codes multipixel plates. With high transparency responsive color variations controlled by compositions ambient temperatures, advanced 3D stacking multichannel coding Morse techniques applied for multi-information storage, complex anticounterfeiting, interference. This study paves an avenue design development dynamic high-end anticounterfeiting applications.
Язык: Английский
Процитировано
50
The Canadian Journal of Chemical Engineering, Год журнала: 2024, Номер 102(8), С. 2695 - 2713
Опубликована: Март 18, 2024
Abstract Cellulose nanocrystals (CNCs) are commercially available materials derived from cellulose, the most abundant biopolymer on our planet. Due largely to their high strength, surface area‐to‐volume ratio, tailorable chemistry, and abundance of biomass feedstocks with which produce them, CNCs have attracted significant interest in applications spanning paints coatings, composites, packaging, biomedical sectors. However, perhaps interestingly, will self‐assemble (or, as I've teased title, organize ) form highly ordered chiral nematic liquid crystal phases when concentrated suspension. Upon complete solvent evaporation, this order is ‘locked’, yielding films structural colour—colour arising not due chemical pigments, but rather physical structure a material itself. In pursuit novel multi‐functional materials, research has shifted recently towards incorporation functional additives composite films. Along introducing basics crystals self‐assembly, review discusses main approaches used CNC‐based films: co‐assembly, templating, post‐processing, highlights exceptional examples each case. Finally, I give my uniquely Canadian perspective current status, future prospects, major challenges associated development materials.
Язык: Английский
Процитировано
9
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(32), С. 41743 - 41765
Опубликована: Авг. 5, 2024
The proliferation of misleading information and counterfeit products in conjunction with technical progress presents substantial worldwide issues. To address the issue counterfeiting, many tactics, such as use luminous anticounterfeiting systems, have been investigated. Nevertheless, traditional fluorescent compounds a restricted effectiveness. Cellulose nanocrystals (CNCs), known for their renewable nature outstanding qualities, present an excellent opportunity to develop intelligent, optically active materials formed due self-assembly behavior stimuli response. CNCs derivatives-based self-assemblies allow creation adaptable that may be used prevent counterfeiting. These integrate photophysical characteristics components stimuli-responsive behavior, enabling fibers, labels, films, hydrogels, inks. Despite attention, existing frequently fall short practical criteria limited knowledge poor performance comparisons. This review aims provide on latest developments anticounterfeit based derivatives. It also includes scope artificial intelligence (AI) near future. will emphasize potential uses these encourage future investigation this rapidly growing area study.
Язык: Английский
Процитировано
8
International Journal of Biological Macromolecules, Год журнала: 2025, Номер 296, С. 139681 - 139681
Опубликована: Янв. 10, 2025
Язык: Английский
Процитировано
1
ACS Nano, Год журнала: 2025, Номер unknown
Опубликована: Фев. 6, 2025
Optical multiplexing technologies, which integrate multiple optical channels based on photonic structures, offer a significant solution for high-capacity information storage and advanced encryption. However, these materials are limited by their inherent unswitchable chiral result in restricted control over the spatial distribution of light. Here, we propose to construct an integrating optical-multiplexed structure using tunable 1D crystals orientation texture via combined self-assembly shear-aligning approach. In this system, created diverse ethyl cellulose (EC) offers wide range light modulations through phase retardation. When with chromatic layer formed EC, wavelength polarization achieved. Notably, due identical components modulation crystal layers, traceless interface between them ensures both high confidentiality durability. By leveraging hierarchical slices well-defined states structural colors created, enabling construction platform multiplexed multichannel 3D 4D This study presents promising strategy develop traceless, highly confidential units controllable color encryption technologies.
Язык: Английский
Процитировано
1
Small, Год журнала: 2024, Номер unknown
Опубликована: Май 8, 2024
Abstract Bio‐inspired in nature, using nanomaterials to fabricate the vivid bionic structural color and intelligent stimulus responsive interface as smart skin or optical devices are widely concerned remain a huge challenge. Here, flexible film is designed fabricated with chiral nanointerface tunable hydrophilic–hydrophobic by ultrasonic energy perturbation strategy crosslinking of cellulose nanocrystals (CNC). An adjustable hydrophilic hydrophobic properties constructed supramolecular assembly ionic liquid molecule. The possessed variable hydrophilic–hydrophobic, responsive, robust iridescent color. reflective wavelength helical pitch can be easily modulated through strategy. covalent cross‐linking has excellent robustness, good elasticity flexibility. brilliant attributed surface charge change CNC photonic crystal, which disturbed perturbation. structure response properties. materials have potential applications skin, devices, materials, robots, anti‐counterfeiting, colorful displays, stealth materials.
Язык: Английский
Процитировано
7
Small, Год журнала: 2023, Номер 20(5)
Опубликована: Сен. 26, 2023
Abstract Cellulose nanocrystal (CNC) is a renewable resource derived from lignocellulosic materials, known for its optical permeability, biocompatibility, and unique self‐assembly properties. Recent years have seen great progresses in cellulose nanocrystal‐based chiral photonic materials. However, due to inherent brittleness, shows limitations the fields of flexible sensors food freshness testing. In order solve above limitations, attempts been made improve flexibility materials without destroying their structural color. Despite these progresses, systematic review on them lacking. This aims fill this gap by providing an overview main strategies latest research findings flexibilization nematic film (FCNM). Specifically, typical substances methods used preparation are summarized. Moreover, different kinds composites compared terms flexibility. Finally, potential applications future challenges discussed, inspiring further field.
Язык: Английский
Процитировано
15
Carbohydrate Polymers, Год журнала: 2023, Номер 313, С. 120877 - 120877
Опубликована: Апрель 3, 2023
Язык: Английский
Процитировано
14
Carbohydrate Polymers, Год журнала: 2025, Номер 353, С. 123270 - 123270
Опубликована: Янв. 14, 2025
Язык: Английский
Процитировано
0