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  • Wiley  (9)
  • Physics  (9)
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  • Physics  (9)
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  • 1
    Online Resource
    Online Resource
    Spatiotemporal Ultrasound‐Driven Bioorthogonal Catalytic Therapy
    Wiley ; 2023
    In:  Advanced Materials Vol. 35, No. 7 ( 2023-02)
    Details
    In: Advanced Materials, Wiley, Vol. 35, No. 7 ( 2023-02)
    Abstract: Bioorthogonal chemistry, referring to the rapid and selective synthesis of imaging and/or therapeutic molecules in live animals via transition metal‐mediated non‐natural chemical transformation without disrupting endogenous reactions, has greatly expanded the tools and techniques for biomedicine. However, owing to safety concerns associated with metal toxicity, selectivity, sensitivity and stability, efficient bioorthogonal reactions that can be reliably executed in complex biological environments remain challenging. In this study, an intelligent, versatile bioorthogonal catalyst based on ultrasmall poly(acrylic acid)‐modified copper nanocomplexes (Cu@PAA NCs) to achieve high spatiotemporal catalytic efficacy is established. The catalytic activity of the Cu@PAA NCs can be reversibly regulated via valence state interconversion between Cu(II) and Cu(I) under exogenous ultrasound irradiation, promoting off‐target prodrug activation in lesion sites through the Cu(I)‐catalyzed azide–alkyne cycloaddition reaction. Moreover, ultrasound‐triggered electron–hole separation endows the Cu@PAA NCs with robust sonosensitizing ability for sonodynamic therapy. Furthermore, the Cu@PAA NCs exhibit enhanced contrast in magnetic resonance and photoacoustic imaging. Notably, the renal‐clearable Cu@PAA NCs exhibit intrinsically benign biocompatibility. This spatiotemporally ultrasound‐mediated bioorthogonal catalysis not only expands the repertoire of in situ therapeutic agents but also provides a new avenue for disease theranostics.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v35.7
    DOI: 10.1002/adma.202209179
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2023
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  • 2
    Online Resource
    Online Resource
    Aligning Ag Nanowires by a Facile Bioinspired Directional Liquid Transfer: Toward Anisotropic Flexible Conductive Electrodes
    Wiley ; 2018
    In:  Advanced Materials Vol. 30, No. 25 ( 2018-06)
    Details
    In: Advanced Materials, Wiley, Vol. 30, No. 25 ( 2018-06)
    Abstract: Recent years have witnessed the booming development of transparent flexible electrodes (TFEs) for their applications in electronics and optoelectronic devices. Various strategies have thus been developed for preparing TFEs with higher flexibility and conductivity. However, little work has focused on TFEs with anisotropic conductivity. Here, a facile strategy of directional liquid transfer is proposed, guided by a conical fibers array (CFA), based on which silver nanowires (AgNWs) are aligned on a soft poly(ethylene terephthalate) substrate in large scale. After further coating a second thin layer of the conductive polymer poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate), a TFE with notable anisotropic conductivity and excellent optical transmittance of 95.2% is prepared. It is proposed that the CFA enables fine control over the receding of the three‐phase contact line during the dewetting process, where AgNWs are guided and aligned by the as‐generated directional stress. Moreover, anisotropic electrochemical deposition is enabled where the Cu nanoparticles deposit only on the oriented AgNWs, leading to a surface with anisotropic wetting behavior. Importantly, the approach enables alignment of AgNWs via multiple directions at one step. It is envisioned that the as‐developed approach will provide an optional approach for simple and low‐cost preparation of TFE with various functions.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v30.25
    DOI: 10.1002/adma.201706938
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2018
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  • 3
    Online Resource
    Online Resource
    A Facile One‐Step Approach for Constructing Multidimensional Ordered Nanowire Micropatterns via Fibrous Elastocapillary Coalescence
    Wiley ; 2019
    In:  Advanced Materials Vol. 31, No. 18 ( 2019-05)
    Details
    In: Advanced Materials, Wiley, Vol. 31, No. 18 ( 2019-05)
    Abstract: Nanowire (NW) based micropatterns have attracted research interests for their applications in electric microdevices. Particularly, aligning NWs represents an important process due to the as‐generated integrated physicochemical advantages. Here, a facile and general strategy is developed to align NWs using fibrous elastocapillary coalescence of carbon nanotube arrays (ACNTs), which enables constructing multidimensional ordered NW micropatterns in one step without any external energy input. It is proposed that the liquid film of NW solution is capable of shrinking unidirectionally on the top of ACNTs, driven by the dewetting‐induced elastocapillary coalescence of the ACNTs. Consequently, the randomly distributed NWs individually rotate and move into dense alignment. Meanwhile, the aggregating and bundling of ACNTs is helpful to produce carbon nanotube (CNT) yarns connecting neighboring bundles. Thus, a micropatterned NW network composed of a top‐layer of horizontally aligned NWs and an under‐layer of vertical ACNT bundles connected by CNT yarns is prepared, showing excellent performance in sensing external pressure with a sensitivity of 0.32 kPa −1 . Moreover, the aligned NWs can be transferred onto various substrates for constructing electronic circuits. The strategy is applicable for aligning various NWs of Ag, ZnO, Al 2 O 3 , and even living microbes. The result may offer new inspiration for fabricating NW‐based functional micropatterns.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v31.18
    DOI: 10.1002/adma.201900534
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2019
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  • 4
    Online Resource
    Online Resource
    Rational Design of A Chemical Bath Deposition Based Tin Oxide Electron Transport Layer for Perovskite Photovoltaics
    Wiley ; 2023
    In:  Advanced Materials
    Details
    In: Advanced Materials, Wiley
    Abstract: Chemical bath deposition is widely used to deposit SnO x as an electron transport layer in perovskite solar cells (PSCs). The conventional recipe uses thioglycolic acid (TGA) to facilitate attachments of SnO x particles onto the substrate. However, nonvolatile TGA has been reported to harm the operational stability of PSCs. In this work, we introduced a volatile oxalic acid (OA) as an alternative to TGA. OA, a dicarboxylic acid, functions as a chemical linker for the nucleation and attachment of particles to the substrate in the chemical bath. Moreover, OA can be readily removed through thermal annealing followed by a mild H 2 O 2 treatment, as shown by FTIR measurements. Synergistically, the mild H 2 O 2 treatment selectively oxidizes the surface of the SnO x layer, minimizing nonradiative interface carrier recombination. EELS (electron‐energy‐loss‐spectroscopy) confirms that the SnO x surface is dominated by Sn 4+ , while the bulk is a mixture of Sn 2+ and Sn 4+ . This rational design of a CBD SnO x layer leads to devices with T85∼1,500 h, a significant improvement over the TGA‐based device with T80∼250 h. Our champion device reached a power conversion efficiency of 24.6%. This work offers a rationale for optimizing the complex parameter space of CBD SnO x to achieve efficient and stable PSCs. This article is protected by copyright. All rights reserved
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Article
    DOI: 10.1002/adma.202304168
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2023
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  • 5
    Online Resource
    Online Resource
    Laser‐Induced Hole Coherence and Spatial Self‐Phase Modulation in the Anisotropic 3D Weyl Semimetal TaAs
    Wiley ; 2023
    In:  Advanced Materials Vol. 35, No. 11 ( 2023-03)
    Details
    In: Advanced Materials, Wiley, Vol. 35, No. 11 ( 2023-03)
    Abstract: Laser‐induced electron coherence is a fascinating topic in manipulating quantum materials. Recently, it has been shown that laser‐induced electron coherence in 2D materials can produce a third‐order nonlinear optical response spatial self‐phase modulation (SSPM), which has been used to develop a novel all‐optical switching scheme. However, such investigations have mainly focused on electron coherence, whereas laser‐induced hole coherence is rarely explored. Here, the observation of the optical Kerr effect in 3D Weyl semimetal TaAs flakes is reported. The nonlinear susceptibility (χ (3) ) is obtained, which exhibits a surprisingly high value (with = 9.9 × 10 −9 e.s.u. or 1.4 × 10 −16  m 2  V −2 at 532 nm). This cannot be explained by the conventional electron mobility, but can be well understood by the unique high anisotropic hole mobility of TaAs. The wind‐chime model and χ (3) carrier mobility correlation adequately explain the results, suggesting the crucial role of laser‐induced nonlocal ac hole coherence. These observations extend the understanding of SSPM from 2D to 3D quantum materials with anisotropic carrier mobility and from electron coherence to hole coherence.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v35.11
    DOI: 10.1002/adma.202208362
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2023
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  • 6
    Online Resource
    Online Resource
    Molecularly Imprinted Porous Aromatic Frameworks and Their Composite Components for Selective Extraction of Uranium Ions
    Wiley ; 2018
    In:  Advanced Materials Vol. 30, No. 12 ( 2018-03)
    Details
    In: Advanced Materials, Wiley, Vol. 30, No. 12 ( 2018-03)
    Abstract: Selective extraction of uranium from water has attracted worldwide attention because the largest source of uranium is seawater with various interference ions (Na + , K + , Mg 2+ , Ca 2+ , etc.). However, traditional adsorbents encapsulate most of their functional sites in their dense structure, leading to problems with low selectivity and adsorption capacities. In this work, the tailor‐made binding sites are first decorated into porous skeletons, and a series of molecularly imprinted porous aromatic frameworks are prepared for uranium extraction. Because the porous architecture provides numerous accessible sites, the resultant material has a fourfold increased ion capacity compared with traditional molecularly imprinted polymers and presents the highest selectivity among all reported uranium adsorbents. Moreover, the porous framework can be dispersed into commercial polymers to form composite components for the practical extraction of uranium ions from simulated seawater.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v30.12
    DOI: 10.1002/adma.201706507
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2018
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  • 7
    Online Resource
    Online Resource
    Molecularly Imprinted Porous Aromatic Frameworks Serving as Porous Artificial Enzymes
    Wiley ; 2018
    In:  Advanced Materials Vol. 30, No. 27 ( 2018-07)
    Details
    In: Advanced Materials, Wiley, Vol. 30, No. 27 ( 2018-07)
    Abstract: Artificially designed enzymes are in demand as ideal catalysts for industrial production but their dense structure conceals most of their functional fragments, thus detracting from performance. Here, molecularly imprinted porous aromatic frameworks (MIPAFs) which are exploited to incorporate full host–guest interactions of porous materials within the artificial enzymes are presented. By decorating a porous skeleton with molecularly imprinted complexes, it is demonstrated that MIPAFs are porous artificial enzymes possessing excellent kinetics for guest molecules. In addition, due to the abundance of accessible sites, MIPAFs can perform a wide range of sequential processes such as substrate hydrolysis and product transport. Through its two functional sites in tandem, the MIPAF subsequently manifests both hydrolysis and transport behaviors. Advantageously, the obtained catalytic rate is ≈58 times higher than that of all other conventional artificial enzymes and even surpasses by 14 times the rate for natural organophosphorus hydrolase ( Flavobacterium sp . strain ATCC 27551).
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v30.27
    DOI: 10.1002/adma.201800069
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 1474949-X
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  • 8
    Online Resource
    Online Resource
    Silver Nanowires: Aligning Ag Nanowires by a Facile Bioinspired Directional Liquid Transfer: Toward Anisotropic Flexible Conductive Electrodes (Adv. Mater. 25/2018)
    Wiley ; 2018
    In:  Advanced Materials Vol. 30, No. 25 ( 2018-06)
    Details
    In: Advanced Materials, Wiley, Vol. 30, No. 25 ( 2018-06)
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v30.25
    DOI: 10.1002/adma.201870178
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 1474949-X
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  • 9
    Online Resource
    Online Resource
    Electrochemical On‐Site Switching of the Directional Liquid Transport on a Conical Fiber
    Wiley ; 2022
    In:  Advanced Materials Vol. 34, No. 24 ( 2022-06)
    Details
    In: Advanced Materials, Wiley, Vol. 34, No. 24 ( 2022-06)
    Abstract: Directional liquid transport (DLT), especially that proceeding on a conical fiber (DLT‐CF), is an important mass‐transfer process widely used both by natural organisms and in practical applications. However, on‐site switching of the DLT‐CF remains a challenge due to the nontunable driving force imparted by the structural gradient, which greatly limits its application. Here, unprecedently, a facile electrochemical strategy is developed for reaching the on‐site switchable DLT‐CF, featuring in situ control and fast response. Depending on the poised electric potential, the droplet can either move directionally or be pinned at any position for a tunable duration time, exhibiting completely different moving characteristics from the traditional DLT‐CF with no control. It is proposed that the surface hysteresis resistance, closely related to both the surface hydrogen‐bonding network and the droplet topology on the fiber, can be largely altered electrochemically. The tunable hysteresis resistance works synergistically with the conical‐structure‐induced Laplace pressure to on‐site tune the forces acting on the droplet, leading to various controllable DLTs‐CF, including those with tunable distance and direction, array manipulation, and assembly line processing of droplets. The strategy is applicable for versatile liquids, offering a general approach for controllable liquid transport in fibrous systems.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    URL: Article
    DOI: 10.1002/adma.v34.24
    DOI: 10.1002/adma.202200759
    RVK:
    UA 1538
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 1474949-X
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