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Metalloligand-anion frameworks: Tunable polarized luminescence and crystal-to-crystal transformation 金属配体-阴离子框架:可调偏振发光和晶体间转化
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.06.012
Noncovalent organic frameworks (NCOFs) are porous materials constructed by diverse intermolecular interactions. It is challenging to obtain polymorphic NCOFs with adjustable pores and high-performance polarized luminescence. Here, two polymorphic organometallic NCOFs, 1-α and 1-β, are presented from an iridium complex 1 based on the intralayer F···H hydrogen bonding and interlayer cation-anion electrostatic interactions. These metalloligand-anion frameworks display linearly polarized blue phosphorescence with a polarization degree of up to 0.91 and optical waveguide properties. The 1-α microcrystals doped with a ruthenium acceptor manifest a reversible response to Et2O vapor, showing modulated energy transfer and polarized luminescence. The 1-α and 1-β microcrystals are transformed into another polymorphic 1-γ crystal by incorporating chiral (R/S)-carvone guests, affording tunable circularly polarized luminescence with a dissymmetry factor of around 0.1. This work provides a unique concept to obtain polymorphic NCOFs, demonstrating prominent potential in multifunctional optical and chiroptical applications.
非共价有机框架(NCOFs)是由多种分子间相互作用构建而成的多孔材料。要获得具有可调孔隙和高性能偏振发光的多晶态 NCOFs 是一项挑战。本文基于层内 F-H 氢键和层间阳离子-阴离子静电相互作用,从铱配合物 1 中提出了两种多形态有机金属 NCOFs:1-α 和 1-β。这些金属配位体-阴离子框架显示出线性偏振蓝色磷光,偏振度高达 0.91,并具有光波导特性。掺杂了钌受体的 1-α 微晶对 Et2O 蒸汽具有可逆反应,显示出调制能量转移和偏振发光。通过掺入手性(R/S)-卡酮客体,1-α 和 1-β 微晶转变成了另一种多晶型 1-γ 晶体,从而产生了不对称系数约为 0.1 的可调圆偏振发光。这项工作为获得多态 NCOFs 提供了一个独特的概念,在多功能光学和光电应用方面展示了突出的潜力。
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引用次数: 0
Cation ordering in low-temperature niobium-rich NbWO bronzes: New anodes for high-rate Li-ion batteries 低温富铌 NbWO 青铜中的阳离子排序:高倍率锂离子电池的新阳极
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.06.023
Supreeth Nagendran , Amoghavarsha Mahadevegowda , Sundeep Vema , Mohsen Danaie , Weixin Song , Bo Wen , Caterina Ducati , Clare P. Grey
Niobium tungsten oxides are gaining attention as anodes for lithium-ion batteries due to their high volumetric energy storage densities obtained at high cycling rates. Two new niobium tungsten bronze structures, NbWO5.5 and β-Nb2WO8, were prepared with microwave-assisted solution-based methods at 800°C. These adopt a simple tetragonal tungsten bronze (TTB) and a √2 × √2 TTB superstructure, respectively. Nb3WO10.5 with a structure closely related to β-Nb2WO8 was formed at higher Nb:W ratios. Nb:W ≥ 4 compositions result in two-phase behavior forming Nb2O5 and Nb3WO10.5, while W-rich bronzes (Nb:W < 1) exhibited local domains of WO3 within the NbWO5.5 lattice. Diffraction and electron microscopy analysis revealed cation ordering in the bronzes at different length scales. The microwave synthesis method produced microporous spheres, with the high-Nb-content phases showing promising high-rate capabilities and long cycle lives, making them suitable for energy-storage applications. The microwave-assisted solution method holds potential for synthesizing complex oxide materials across diverse applications.
铌钨氧化物在高循环速率下具有高体积能量存储密度,因此作为锂离子电池的阳极正日益受到关注。本研究采用微波辅助溶液法,在 800°C 下制备了两种新的铌钨青铜结构:NbWO5.5 和 β-Nb2WO8。它们分别采用了简单的四方钨青铜(TTB)和 √2 × √2 TTB 超结构。在较高的铌:W 比值下,形成了与 β-Nb2WO8 结构密切相关的 Nb3WO10.5。Nb:W ≥ 4 的成分会导致两相行为,形成 Nb2O5 和 Nb3WO10.5,而富 W 青铜(Nb:W <1)则在 NbWO5.5 晶格内显示出局部的 WO3 域。衍射和电子显微镜分析表明,青铜中的阳离子在不同的长度尺度上有序排列。微波合成法产生了微孔球体,其中高铌含量相具有良好的高速率能力和长循环寿命,适合用于储能应用。微波辅助溶液法具有合成复杂氧化物材料的潜力,可用于多种应用领域。
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引用次数: 0
Unlocking lithium ion conduction in lithium metal fluorides 揭开金属锂氟化物中锂离子传导的神秘面纱
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.06.027
Lanting Qian , Baltej Singh , Zhuo Yu , Ning Chen , Graham King , Zachary Arthur , Linda F. Nazar
Here, we demonstrate that quasi-crystalline lithium metal fluoride materials prepared by mechanochemical synthesis exhibit up to 300-fold higher ionic conductivity than their crystalline counterparts, with Li2TiF6 being the example in point. By probing the “amorphous” and crystalline forms of these materials at different length scales, we show that the introduction of structural disorder at short to long length scales is crucial for facilitating Li+ transport. Moreover, we show that the addition of LiF creates an interaction with Li2TiF6 at the local level that readily disrupts the long-range order. The ionic conductivity of the composite material reaches a benchmark value of 2.5 × 10−3 mS cm−1, the highest of fluoride materials reported in the literature and on par with LiPON and LiNbO3. This work delivers insights into structure-conductivity relationships contrasting crystalline and amorphous materials and shows strategies to unlock ion conduction.
在这里,我们证明了通过机械化学合成法制备的准晶体金属氟化锂材料的离子电导率比晶体材料高出 300 倍,Li2TiF6 就是一个很好的例子。通过探测这些材料在不同长度尺度上的 "无定形 "和晶体形态,我们发现在短到长的长度尺度上引入结构无序对促进 Li+ 传输至关重要。此外,我们还表明,LiF 的加入会在局部与 Li2TiF6 产生相互作用,从而轻易地破坏长程有序性。复合材料的离子电导率达到了 2.5 × 10-3 mS cm-1 的基准值,是文献报道的氟化物材料中最高的,与 LiPON 和 LiNbO3 不相上下。这项研究深入揭示了晶体材料与非晶体材料之间的结构-传导关系,并展示了释放离子传导的策略。
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引用次数: 0
Piezoionic artificial nerves for tactile sensing and neuromodulation 用于触觉传感和神经调节的压电人工神经
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.08.024
Meng Xiao , Zhou Li
As soft, self-powered, and biocompatible ionic current generators, piezoionic hydrogels are suitable candidates for implantable neuromodulation applications. In a recent issue of Device, Dai et al.1 describe an artificial nerve that combines sensing and synaptic functions for neuromodulation. The success of piezoionic artificial nerves can inspire next-generation neuromorphic devices with sensing, storage, and computing properties.
压电水凝胶是一种柔软、自供电和生物兼容的离子电流发生器,是植入式神经调控应用的合适候选材料。在最近一期的《设备》(Device)杂志上,Dai 等人1 描述了一种结合传感和突触功能用于神经调控的人工神经。压电离子人工神经的成功可启发具有传感、存储和计算特性的下一代神经形态设备。
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引用次数: 0
Enhancement of ion selectivity and permeability in two-dimensional material membranes 增强二维材料膜的离子选择性和渗透性
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.07.006
Jie Luo , Risa Qiao , Baofu Ding
Two-dimensional (2D) materials, recognized for their atomic-level thickness, high specific surface area, and robust chemical adaptability, significantly reduce ion transport resistance and improve sieving selectivity in membrane separation. This review focuses on recent advancements in 2D material membranes for ion-selective separation, delving into the fundamental properties of 2D materials for membrane fabrication, their synthesis and preparation methods, their classification based on electrical properties, and strategies to enhance ion selectivity and ion permeability. It also explores applications at the forefront of desalination, osmotic energy conversion, and acid recovery. Furthermore, this review discusses developmental challenges and future research directions related to vertical 2D nanochannels, anion-exchange membranes, large-scale preparation, structure stability, 2D material assembly, and mass transfer mechanisms.
二维(2D)材料具有原子级厚度、高比表面积和强大的化学适应性,可显著降低离子传输阻力并提高膜分离的筛分选择性。本综述重点介绍用于离子选择性分离的二维材料膜的最新进展,深入探讨用于膜制造的二维材料的基本特性、合成和制备方法、基于电学特性的分类以及提高离子选择性和离子渗透性的策略。它还探讨了海水淡化、渗透性能量转换和酸回收等前沿应用。此外,本综述还讨论了与垂直二维纳米通道、阴离子交换膜、大规模制备、结构稳定性、二维材料组装和传质机制有关的发展挑战和未来研究方向。
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引用次数: 0
Tuning the 1D-to-2D transition in lepidocrocite titanate nanofilaments via polymer wrapping 通过聚合物包裹调节鳞片钛酸酯纳米丝的一维到二维转变
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.08.013
Tongjie Zhang , Shichen Yu , Yuean Wu , Mohamed A. Ibrahim , Adam D. Walter , Gregory R. Schwenk , Yong-Jie Hu , Michel W. Barsoum , Christopher Y. Li
Recently, a solution-based method was developed to synthesize sub-nm thin one-dimensional (1D) lepidocrocite (1DL) titanium-oxide-based nanofilaments as a colloidal suspension. When converted into the solid state, these 1DL nanofilaments self-assemble into 2D layered structures. Herein, we show how a polymer—branched polyethyleneimine (bPEI)—can be used to wrap individual 1DL surfaces and arrest this 1D-to-2D structural transition. X-ray diffraction (XRD) confirmed that the polymer molecules coated onto individual 1DL surfaces. More interestingly, the bPEI-coated 1DLs form a columnar hexagonal liquid crystalline structure in the solid state, and the inter-1DL distances can be readily tuned from 1.66 to 3.00 nm by controlling the polymer-to-1DL volume ratio. Combining the XRD results and density functional theory (DFT) calculations, we conclude that the 1D nanofilaments, on average, are comprised of 2 × 2 edge-shared TiO6 octahedra roughly 0.6 nm in diameter. The tunable liquid crystalline phase could open new opportunities to realize 1DL in multiple applications.
最近,研究人员开发了一种基于溶液的方法,以胶体悬浮液的形式合成亚纳米级细的一维(1D)鳞片状氧化钛(1DL)纳米纤丝。当转化为固态时,这些 1DL 纳米纤丝可自组装成二维分层结构。在此,我们展示了如何利用聚合物--支化聚乙烯亚胺(bPEI)来包裹单个 1DL 表面,并阻止这种 1D 到 2D 的结构转变。X 射线衍射 (XRD) 证实聚合物分子包覆在单个 1DL 表面上。更有趣的是,涂覆了 bPEI 的 1DL 在固态下形成了柱状六方液晶结构,通过控制聚合物与 1DL 的体积比,1DL 之间的距离可从 1.66 纳米调整到 3.00 纳米。结合 XRD 结果和密度泛函理论(DFT)计算,我们得出结论:1D 纳米纤丝平均由直径约 0.6 纳米的 2 × 2 边缘共享 TiO6 八面体组成。可调液晶相为实现 1DL 的多种应用开辟了新的机遇。
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引用次数: 0
Unveiling passive design to enable synergistic water harvesting and irrigation 揭开被动式设计的神秘面纱,实现集水与灌溉的协同增效
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.08.003
Changmin Shi , Brian W. Sheldon , Meijie Chen
Developing passive water collection strategies offers us an opportunity to address global water scarcity and energy shortages. In a recent issue of Nature Water, Zou et al. introduced a novel solar-driven hygroscopic gel to efficiently recycle water for irrigation from plant transpiration and soil evaporation, offering a promising energy-saving solution for agricultural water management.
开发被动集水策略为我们提供了一个解决全球水资源短缺和能源短缺问题的机会。在最近一期的《自然-水》杂志上,邹等人介绍了一种新型太阳能驱动吸湿凝胶,可有效回收植物蒸腾和土壤蒸发的水用于灌溉,为农业用水管理提供了一种前景广阔的节能解决方案。
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引用次数: 0
Open aerosol microfluidics enable orthogonal compartmentalized functionalization of hydrogel particles 开放式气溶胶微流体技术实现了水凝胶颗粒的正交分区功能化
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.06.045
Zengnan Wu , Yajing Zheng , Ling Lin , Yongning Lin , Tianze Xie , Wenjun Liao , Shiyu Chen , Yingrui Zhang , Jin-Ming Lin
Compartmentalized hydrogel microparticles are promising for applications in chemical, biological, and biomedical fields, owing to their customizability. However, simultaneous tailoring of the functionalities in both internal and surface compartments remains challenging. Here, an open aerosol microfluidic (OAMF) approach is reported to fabricate compartmentalized hydrogel particles, achieving orthogonal (independent and non-interfering) control over both internal and surface functionalization. The OAMF method utilizes microfluidic networks for shaping internal compartment layouts and employs reactive aerosols for precise surface engineering. As a proof of concept, particles featuring intricate internal and surface designs were created. In addition, the broad material versatility of particle customization is demonstrated by different hydrogels. Finally, potential applications of particles were explored as novel cell carriers. As exemplars, patterned cell cultures can be established both on the surface and inside of the particles. The proposed approach enables flexible design of engineered particles, advancing tissue engineering, drug screening, and cell therapeutic applications.
分区水凝胶微粒因其可定制性而有望应用于化学、生物和生物医学领域。然而,同时定制内部和表面的功能仍然具有挑战性。本文报告了一种开放气溶胶微流控(OAMF)方法,用于制造分区水凝胶颗粒,实现对内部和表面功能化的正交(独立且互不干扰)控制。OAMF 方法利用微流体网络塑造内部隔室布局,并采用反应气溶胶进行精确的表面工程。作为概念验证,我们制造出了具有复杂内部和表面设计的颗粒。此外,还通过不同的水凝胶展示了颗粒定制的广泛材料通用性。最后,还探讨了颗粒作为新型细胞载体的潜在应用。例如,可以在颗粒表面和内部建立图案化细胞培养。所提出的方法可以灵活设计工程颗粒,推动组织工程、药物筛选和细胞治疗应用的发展。
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引用次数: 0
Arene-perfluoroarene interaction: Properties, constructions, and applications in materials science 烯-全氟烯相互作用:材料科学中的性质、构造和应用
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.06.035
Shu Zhang , Aocheng Chen , Yi An , Quan Li
Arene-perfluoroarene interaction is a unique form of π-π interaction that has gained attention in recent years. This review begins by introducing the properties of arene-perfluoroarene interaction to highlight its significant difference from arene-arene interaction. Through employing density functional theory (DFT) calculations, we elucidate the binding affinities of diverse arene-perfluoroarene interaction pairs. Moreover, manifold self-assembly constructions arise from the varying binding affinities of arene-perfluoroarene interaction in solid and solution phases. The impact of arene-perfluoroarene interaction in materials science is significant, with numerous examples covering various popular categories of materials, such as graphenes, perovskites, and hydrogels, as well as functions, such as organic luminescent materials, solar cells, and biological engineering materials. This review is expected to offer guidance on the application of arene-perfluoroarene interaction in materials science, providing an alternative tool for current challenges in the field.
芘-全氟烯相互作用是近年来备受关注的一种独特的π-π相互作用形式。本综述首先介绍了炔-全氟烯相互作用的性质,以突出其与炔-烯相互作用的显著区别。通过运用密度泛函理论(DFT)计算,我们阐明了各种炔-芴相互作用对的结合亲和力。此外,在固相和溶液相中,炔-全氟烯相互作用的不同结合亲和力会产生多种自组装结构。炔-全氟烯相互作用在材料科学中的影响是巨大的,其例子不胜枚举,涵盖了石墨烯、过氧化物和水凝胶等各种流行的材料类别,以及有机发光材料、太阳能电池和生物工程材料等功能。本综述有望为炔-全氟烯相互作用在材料科学中的应用提供指导,为应对该领域当前的挑战提供另一种工具。
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引用次数: 0
Reusable soy protein derivative as sustainable adhesive 可重复使用的大豆蛋白衍生物作为可持续粘合剂
IF 17.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-10-02 DOI: 10.1016/j.matt.2024.08.018
Changyong Cai , Zhijian Tan , Shengyi Dong
Fabricating materials from natural resources is related to green, low-carbon, and sustainable development. Recently in Cell Rep. Phys. Sci., a bioinspired strategy is used to construct a reusable adhesive from the soy protein. This study represents a successful attempt to introduce sustainability into artificial materials.
利用自然资源制造材料关系到绿色、低碳和可持续发展。最近,在《细胞报告物理科学》(Cell Rep. Phys. Sci.)杂志上,一种生物启发策略被用于从大豆蛋白中构建可重复使用的粘合剂。这项研究是将可持续性引入人工材料的一次成功尝试。
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引用次数: 0
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