Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159583 - 159583
Published: Jan. 1, 2025
Language: Английский
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)
Published: May 14, 2024
Abstract Constructing an anti‐counterfeiting material with non‐interference dual optical modes is effective way to improve information security. However, it remains challenging achieve multistage secure encryption due the limited stimulus responsiveness and color tunability of current dual‐mode materials. Herein, a hydrogel both independently tunable structural fluorescent colors toward encryption, reported. In this system, rigid lamellar structure poly(dodecylglyceryl itaconate) (pDGI) formed by shear flow‐induced self‐assembly provides restricted domains wherein monomers undergo polymerization form network, producing color. The introduction monomer 6‐acrylamidopicolinate (6APA) as complexation site possibility formation. hydrogel's angle‐dependent can be controlled adjusting crosslinking density water content. Additionally, fluorescence modulated ratio lanthanide ions. Information displayed separately in different channels synergistically overlayed read ultimate message. Thus, system based on devised through programed decryption process. This strategy holds tremendous potential platform for encrypting safeguarding valuable authentic field anti‐counterfeiting.
Language: Английский
Citations
43
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(11), P. 5366 - 5393
Published: Jan. 1, 2024
Recent advances in the design of AIE platinum complexes: structural regulation strategies, mechanisms, and applications.
Language: Английский
Citations
37
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(38)
Published: April 9, 2024
Abstract Multifunctional shape memory polymers are significant for next‐generation intelligent systems as smart materials. However, their practical applications limited by toughness, manufacturability, and functional integration strategies. Besides, while 4D printing is used to construct deformable devices, the accessible shapes difficulty of integrating multiple materials hindered development multifunctional devices. Herein, metal‐phenolic coordination crosslinks tailor tough polyurethanes with intrinsic photothermal effect and/or tunable fluorescence. The reversible dissociation complexes upon loading provides an efficient energy dissipation polymer network. photothermal/fluorescent properties target polyurethane can be effortlessly programmed changing coordinated metals ligands. obtained fluorescent displays fluorescence through dissociation‐association dynamic bonds thermal stimulus. Moreover, relying on light‐triggered hybrid exchange reactions among various bonds, heterogeneous interfaces merged manufacture exquisite 3D shape‐shifting devices integrate more advanced functions. As demonstrations, photothermal‐responsive stent, encryption device produced based photo‐welding instead printing. This study not only a convenient supramolecular strategy constructing but also demonstrates feasible method making personalized integrated architectures.
Language: Английский
Citations
21
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 13, 2025
Multimode luminescent materials exhibit tunable photon emissions under different excitation or stimuli channels, endowing them high encoding capacity and confidentiality for anti-counterfeiting encryption. Achieving multimode luminescence into a stable single material presents promising but remains challenge. Here, the downshifting/upconversion emissions, color-tuning persistent (PersL), temperature-dependent multi-color hydrochromism are integrated Er3+ ions doped Cs2NaYbCl6 nanocrystals (NCs) by leveraging shallow defect levels directed energy migration. The resulting NCs display strong static dynamic colorful in response to ultraviolet, 980-nm laser, X-ray. Additionally, distinct colors as temperature increases from 330 430 K. Surprisingly, it also demonstrates ability of reversible emission modal color water. Theoretical calculations experimental characterizations reveal that self-trapped exciton state (STEs), chlorine vacancy defects, ladderlike 4f contribute multimodal luminescence. More importantly, has extremely remarkable environmental stability, which can be stored air more than 18 months, showing commercial prospects. This work not only gives new insights lanthanide-based metal halide provides route developing nanomaterials
Language: Английский
Citations
5
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: March 22, 2025
Leveraging the rich stimuli-response of polymers represents a promising direction towards optical communication/encryption. Sign language, which relies on specific geometric change for secured communication, has been widely used same purpose since ancient time. We report strategy that combines both in validated manner with hydrogel not only carries encrypted information but also hidden behavior to morph geometrically. In particular, shape morphing is programmable by controlling oriented state polymer chain thermo-responsive network. Whether positive (bending) or negative (flattening) cannot be predicted when polymerization methods are informed, revealing manner. Through deciphering coupling elastic stresses and thermo-induced deswelling stress, can perform designed diversified 4D evolution 3D geometries time as fourth dimension. Consequently, corresponding gated based these features, thereby decrypting correct permutation information. Our approach utilizes verification offers enhancing security communication ways quite different from existing strategies. Stimuli responsive hydrogels always complex required. Here, authors use
Language: Английский
Citations
3
Materials Today Physics, Journal Year: 2024, Volume and Issue: 43, P. 101397 - 101397
Published: March 19, 2024
Language: Английский
Citations
16
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)
Published: March 27, 2024
Cephalopods evolve the acetylcholine-gated actuation control function of their skin muscles, which enables dynamic/static multimode display capacities for achieving perfectly spatial over colors/patterns on every inch skin. Reproduction artificial analogs that exhibit similar multimodal is essential to reach advanced information three-dimensional (3D) encoding with higher security than classic 2D-encoding strategy, but remains underdeveloped. The core difficulty how replicate such chemical-gated into soft actuating systems. Herein, this work proposes develop azobenzene-functionalized poly(acrylamide) (PAAm) hydrogel systems, whose upper critical solution temperature (UCST) type responsiveness can be intelligently programmed or even gated by addition hydrophilic α-cyclodextrin (α-CD) molecules reversible association pendant azobenzene moieties via supramolecular host-guest interactions. By employing α-CD-gated actuator as an analogue cephalopods' muscle, biomimetic mechanically modulated multicolor fluorescent systems are designed, demonstrate a conceptually new "thermal stimulation-hydrogel actuation-fluorescence output" mechanism. Consequently, high-security 3D-encoding carriers unprecedented combination single-input multiple-output, dual-mode and spatially controlled achieved. This bioinspired strategy brings functional-integrated features opens previously unidentified avenues security.
Language: Английский
Citations
16
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 23, 2024
Abstract Time‐resolved photofluorochromism constitutes a powerful approach to enhance information encryption security but remains challenging. Herein, we report strategy of using hydrogen bonds regulate the time for initiating photofluorochromism. In our strategy, copolymers containing negative photochromic spiropyran (NSP), naphthalimide, and multiple hydrogen‐bonding (UPy) units are designed, which display photo‐switchable fluorescence resonance energy transfer (FRET) process from naphthalimide donor NSP acceptor. Interestingly, FRET is locked via dynamic interaction between ring‐opened UPy moieties, resulting in time‐dependent fluorescence. The change can be finely regulated fraction polymers. Besides novel fluorescence, polymers also take advantage visible‐light triggerable, excellent photostability, photoreversibility, processability. We demonstrate that these properties enable them many application opportunities such as fluorescent labels multilevel patterns.
Language: Английский
Citations
12
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(34)
Published: April 11, 2024
Abstract Luminescent materials are emerging promising tools for digital data encoding due to their reduced cost, facile reading, robustness, and durability. For this, the use of fluorescent systems that combine multicolor emission with sensitivity external stimuli will be highly desirable, as they can offer rewritable together enhanced encryption security storage density. Herein a novel strategy is pioneered reach this goal, which exploits temperature‐responsive properties mixtures regular fluorophores simple organic phase change (PCMs) such paraffins. By preparing diversity microcapsules these comprising different dyes PCMs, thermosensitive pixels prepared in low‐cost, straightforward, scalable manner exhibits dynamic behavior. These features capitalized fabricate pixel arrays perform two advanced operations: high‐security 3D information encryption, 4D storage.
Language: Английский
Citations
11
Chemistry of Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 23, 2025
Language: Английский
Citations
2