Erasable, Rewritable, and Reprogrammable Dual Information Encryption Based on Photoluminescent Supramolecular Host–Guest Recognition and Hydrogel Shape Memory

Advanced Materials, Год журнала: 2023, Номер 35(40)

Опубликована: Июнь 26, 2023

Information encryption technologies are very important for security, health, commodity, and communications, etc. Novel information mechanisms materials desired to achieve multimode reprogrammable encryption. Here, a supramolecular strategy is demonstrated multimodal, erasable, reprogrammable, reusable by reversibly modulating fluorescence. A butyl-naphthalimide with flexible ethylenediamine functionalized β-cyclodextrin (N-CD) utilized as fluorescent responsive ink printing or patterning on polymer brushes dangling adamantane group grafted hydrogels. The photoluminescent naphthalimide moiety bonded β-CD entrapped in the cavity. Its fluorescence highly weakened cavity recovers after being expelled from competing guest molecule emit bright green photoluminescence under UV. Experiments theoretical calculations suggest π-π stacking ICT primary mechanism naphthalimides assembly fluorescence, which can be quenched through insertion of conjugated molecules recover removing insert. Such reversible quenching recovering used repeated writing, erasing, re-writing information. Supramolecular recognition hydrogel shape memory further combined dual-encryption. This study provides novel develop smart improved security broad applications.

Язык: Английский

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Tough, Healable, and Sensitive Strain Sensor Based on Multiphysically Cross-Linked Hydrogel for Ionic Skin

Biomacromolecules, Год журнала: 2023, Номер 24(3), С. 1287 - 1298

Опубликована: Фев. 6, 2023

Ion conductive hydrogels (ICHs) have attracted great interest in the application of ionic skin because their superior characteristics. However, it remains a challenge for ICHs to achieve balanced properties high strength, large fracture strain, self-healing and freezing tolerance. In this study, strong, stretchable, antifreezing ICH was demonstrated by rationally designing multiphysically cross-linked network structure consisting hydrophobic association, metal-ion coordination chain entanglement among poly(acrylic acid) (PAA) polymer chains. The deliberately designed Brij S 100 acrylate (Brij-100A) micelle cross-linker can effectively dissipate energy endow with desirable stretchability. ability originates from reversible association micelles Fe3+-COO– coordination. After addition NaCl, chain-entangled physical caused salting-out effect both enhance mechanical strength promote electron transport. With synergy mental-ligand entanglement, PAA/Brij-100A/Fe3+/NaCl (PAA/BA/Fe3+/NaCl) exhibited tensile strain 1140%, 0.93 MPa toughness 3.48 MJ m–3. Besides, PAA/BA/Fe3+/NaCl conductivity 0.43 m–1 good resistance. based on showed sensitivity (GF = 5.29), wide range (0–950%), fast response time (220 ms) stability. Also, significantly prolong its service time, property broaden applicable temperature. This study offers new insight into design multifunctional wearable electronics.

Язык: Английский

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Triple Cross‐linked Dynamic Responsive Hydrogel Loaded with Selenium Nanoparticles for Modulating the Inflammatory Microenvironment via PI3K/Akt/NF‐κB and MAPK Signaling Pathways

Advanced Science, Год журнала: 2023, Номер 10(31)

Опубликована: Сен. 22, 2023

Modulating the inflammatory microenvironment can inhibit process of diseases (IDs). A tri-cross-linked microenvironment-responsive hydrogel with ideal mechanical properties achieves triggerable and sustained drug delivery regulates microenvironment. Here, this study develops an (OD-PP@SeNPs) composed phenylboronic acid grafted polylysine (PP), oxidized dextran (OD), selenium nanoparticles (SeNPs). The introduction SeNPs as initiators nano-fillers into results in extra cross-linking polymer network through hydrogen bonding. Based on Schiff base bonds, Phenylboronate ester a reactive oxygen species (ROS)/pH dual responsive triple-network is achieved. has injectable, self-healing, adhesion, outstanding flexibility, suitable swelling capacity, optimal biodegradability, excellent stimuli-responsive active substance release performance, prominent biocompatibility. Most importantly, ROS scavenging pH-regulating ability protects cells from oxidative stress induces macrophages M2 polarization to reduce cytokines PI3K/AKT/NF-κB MAPK pathways, exerting anti-inflammatory effects reshaping microenvironment, thereby effectively treating typical IDs, including S. aureus infected wound rheumatoid arthritis rats. In conclusion, dynamically injectable structure provides effective strategy treat holding great promise clinical application.

Язык: Английский

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A carboxymethyl cellulose/chitosan-based hydrogel harvests robust adhesive, on-demand detachment and self-healing performances for deep burn healing

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155552 - 155552

Опубликована: Сен. 12, 2024

Язык: Английский

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Remotely Controlled Light/Electric/Magnetic Multiresponsive Hydrogel for Fast Actuations

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(7), С. 10030 - 10043

Опубликована: Фев. 13, 2023

As a kind of soft smart material, hydrogel actuators have extensive development prospects, but it is still difficult for these to integrate multiresponsiveness, multiple remote actuation, high strength, fast responsiveness, and programmable complex deformation. Herein, we explored an anisotropic bilayer actuator with Fe3O4/co-poly(isopropylacrylamide-4-benzoylphenyl acrylate) [Fe3O4/P(NIPAM-ABP)] active layer isotropic conductive adhesive (ICAs) passive based on the layer-by-layer method. Benefiting from fibrosis porosity Fe3O4/P(NIPAM-ABP) hydrogel, ICAs-Fe3O4/P(NIPAM-ABP) has excellent mechanical strength (tensile 3.1 ± 0.3 MPa) response speed (temperature (45 °C): bending 2400.3°/s; near-infrared (NIR) light: 356.4°/s; electricity (2 V): 180°/s; water (10 recovery 30.0°/s). In addition, good photothermal properties magnetic conductivity Fe3O4 nanoparticles provide precise remotely controllable light- magnetic-actuated actuator. The Ag microsheets (1.4 × 104 S/cm) electrical-actuated property Combined responsiveness P(NIPAM-ABP), can achieve short-range actuation including temperature-, ethanol-, salt-responses. More importantly, light, electrical, responses. Finally, fibers structures deformational programmability. Inspired by some phenomena in nature, several actuating devices above characteristics been successfully developed. This study general method multifunctional will new strategy exploring materials suitable bioinspired systems.

Язык: Английский

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Competition-Based Two-Dimensional Photonic Crystal Dually Cross-Linked Supramolecular Hydrogel for Colorimetric and Fluorescent Dual-Mode Sensing of Bisphenol A

Analytical Chemistry, Год журнала: 2023, Номер 95(8), С. 4220 - 4226

Опубликована: Фев. 14, 2023

Bisphenol A (BPA), one of the most abundantly produced endocrine disrupting chemicals, is widely used in everyday plastic products and thus must be monitored. Multimode sensing platforms are able to combine advantages different strategies while solving issues inaccurate test results single signal sensing. However, exploration this field limited due compromise conditions inevitable mutual interferences systems. Herein, we constructed a two-dimensional photonic crystal dually cross-linked supramolecular hydrogel (2DPCDCSH) by utilizing host-guest pair β-cyclodextrin (β-CD) tert-butyl (t-Bu) as second cross-linking for colorimetric fluorescent dual-mode BPA. Based on fact that BPA can act competitive guest break interaction between β-CD t-Bu, density decreased an expansion-induced structural color change occurred. Sensitive selective detection easily achieved measuring Debye diffraction ring diameter or observing 2DPC with limit 1 μg mL-1. Moreover, formation β-CD/BPA complex gave significant enhancement intrinsic fluorescence BPA, obtaining 0.001 The two systems share same reaction condition yield wider dynamic response range than strategy. Overall, proposed method presented efficient, rapid, cost-effective, regenerative analysis shed new insights design diversified platforms.

Язык: Английский

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A Conformable and Tough Janus Adhesive Patch with Limited 1D Swelling Behavior for Internal Bioadhesion

Advanced Functional Materials, Год журнала: 2023, Номер 33(41)

Опубликована: Июнь 13, 2023

Abstract Advanced bioadhesion techniques have offered unprecedented opportunities for life‐saving internal surgical procedures. However, most existing bioadhesives failed to rapidly establish long‐lasting reliable biointerface and effectively reconstruct normal physiological function in the body fluid‐rich inevitable dynamic environment. Herein, a PEGylated poly(glycerol sebacate)‐based Janus adhesive patch (PEGS‐based JAP) is developed by integrating physically crosslinked guanidinylated PEGS (PEGSG) acryloylated PEGS‐chemically poly(acrylic acid)‐ N ‐hydrosuccinimide ester (PEGSA‐crosslinked PAAc‐NHS) with single‐sided zwitterionic polymer‐interpenetrated layer. The dry JAP can absorb unpleasant interfacial water form strong physical interactions wet tissues. Benefiting from amphiphilic nature of PEGSG simple spatial‐confined drying process, allowed resist excessive swelling limitedly swell along one direction avoid deterioration as‐established conformable patch‐tissue interface. Moreover, covalent formed subsequently further improve strength ensure adhesion. Meanwhile, notch‐insensitive puncture‐resistant achieve tough adhesion adapt conditions owing highly efficient energy‐dissipation mechanism cross‐linked network. Combining above ideal features desirable postoperative anti‐adhesion ability, PEGS‐based demonstrated be promising candidate tissue reconstruction.

Язык: Английский

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Novel durable and recyclable Cu@MoS2/polyacrylamide/copper alginate hydrogel photo-Fenton-like catalyst with enhanced and self-regenerable adsorption and degradation of high concentration tetracycline

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 344, С. 123640 - 123640

Опубликована: Дек. 20, 2023

Язык: Английский

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A Review of Recent Manufacturing Technologies for Sustainable Soft Actuators

International Journal of Precision Engineering and Manufacturing-Green Technology, Год журнала: 2023, Номер 10(6), С. 1661 - 1710

Опубликована: Июль 13, 2023

Abstract Soft actuators have brought significant advancements to robotics, allowing robots perform a diverse range of tasks across various domains. However, the increased use soft has resulted in negative environmental impacts, including material consumption, waste generation, and energy consumption. To address these challenges, research is increasingly focused on developing sustainable (SSAs) that can provide high performance while minimizing harm. This review article aims explore development manufacturing SSAs their potential reduce consumption promoting sustainability. The examines categories actuators, such as multi-responsive ones, shape-locking variants, biological water-responsive models, well implementation through multi-material printing and, 3D 4D techniques. also highlights applications SSAs, manufacturing, human–machine interaction, locomotion, manipulation. Furthermore, explores methods for reducing using recycled materials eco-friendly processes circular economy. Finally, study provides comprehensive analysis steer evolution robotics towards more future

Язык: Английский

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Fabrication of a High-Strength, Tough, Swelling-Resistant, Conductive Hydrogel via Ion Cross-Linking, Directional Freeze-Drying, and Rehydration

ACS Biomaterials Science & Engineering, Год журнала: 2023, Номер 9(5), С. 2694 - 2705

Опубликована: Март 31, 2023

Conductive hydrogels have been in huge demand biomedical and wearable electronics. However, the application of traditional conductive is largely limited due to their poor mechanical properties. Here, a hydrogel with excellent strength swelling resistance properties prepared by ion cross-linking, directional freeze-drying, rehydration. First, acrylamide acrylic acid are polymerized κ-carrageenan solution form hydrogel. Then, obtained cross-linked Fe3+ soaking ferric chloride solution. Finally, ionic reinforced freeze-drying The resulting has tensile (5.67 MPa) high toughness (7.63 MJ/m3). It worth noting that also had anti-swelling Its volume almost show no changes after deionized water for 40 days. In addition, exhibits good conductivity (0.091 S/m), sensitivity, stability when applied as strain sensor. This work proposes simple method fabricate great resistance, which displays potential varied fields.

Язык: Английский

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