英国皇家化学会主编推荐：材料领域精彩文章快览

英国皇家化学会（RSC）是一个拥有超过175年历史的面向全球化学家的非营利会员制机构，旗下拥有43种期刊，其中很多在化学领域有很高影响力。为了进一步帮助广大读者追踪科技前沿热点，X-MOL团队与英国皇家化学会合作，推出英国皇家化学会期刊主编推荐的精彩文章快览，本期文章属“材料领域”，英文点评来自英国皇家化学会期刊的主编。如果大家对我们的解读有更多的补充和点评，欢迎在文末写评论发表您的高见！

Chemical Science (IF: 8.668)

1. Adhesive bacterial amyloid nanofiber-mediated growth of metal–organic frameworks on diverse polymeric substrates

Chem. Sci., 2018, Advance Article

DOI: 10.1039/C8SC01591K

Researchers in China report a new technique platform that uses adhesive bacterial amyloid nanofibers (or curli nanofibers, CNFs) as coatings on polymeric substrates to achieve controlled MOF growth. Applying this technique to membrane fabrication afforded a 760 nm ZIF-8 TFC membrane that showed a C₃H₆/C₃H₈ mixed-gas separation factor up to 10 and C₃H₆ permeance up to 1110 GPU. This approach may be used to construct MOF-based devices and membranes.

上海科技大学的研究人员报道了一种新的技术平台，使用粘性细菌淀粉样蛋白纳米纤维（或卷曲纤毛纤维，CNFs）作为聚合物基底上的涂层以实现可控的MOF生长。他们使用该技术制造了760 nm的ZIF-8薄膜复合材料（TFC）膜，对于C₃H₆/C₃H₈混合气体的分离因子高达10，并且C₃H₆的渗透率高达 1110 GPU。该方法可用于构建基于MOF的装置和膜。

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2. New strategy for designing promising mid-infrared nonlinear optical materials: narrowing the band gap for large nonlinear optical efficiencies and reducing the thermal effect for a high laser-induced damage threshold

Chem. Sci., 2018, Advance Article

DOI: 10.1039/C8SC01210E

Scientists in China report a strategy to address the incompatibility between large non-linear optical (NLO) efficiencies and high laser-induced damage threshold (LIDT) in mid-infrared NLO materials. The group synthesized isostructural chalcogenides with various tetrahedral centre cations. These materials, when compared to benchmark AgGaS₂, exhibited narrow band gaps (1.56-1.73 eV), high NLO efficiencies (1.6-3.6 fold higher) and high LIDTs (8.5-13.3 fold higher).

中国科学院福建物质结构研究所的科学家们报道了一种策略，可解决中红外非线性光学（NLO）材料高NLO效率与高激光诱导损伤阈值（LIDT）之间的不兼容问题。该团队合成了具有各种四面体中心阳离子的同构硫族化合物，这些材料与基准物AgGaS₂相比时，表现出了窄带隙（1.56-1.73 eV）、高NLO效率（高1.6-3.6倍）和高LIDT（高8.5-13.3倍）的特性。

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Materials Horizons (IF:10.706)

1. Photonic structuring improves the colour purity of rare-earth nanophosphors

Mater. Horiz., 2018, Advance Article

DOI: 10.1039/C8MH00123E

The authors demonstrate that an optical cavity can render a thin layer of rare-earth nanocrystals into a directional source of light with high colour purity. They achieve unprecedented control over the chromaticity and directionality of the emitted light without modifying the chemical composition of the emitter.

本文作者证明一种光学腔可以使稀土纳米晶体薄层成为高色纯度的定向光源。在不改变发射体化学组成的情况下，他们实现了对发射光色度和方向性前所未有的控制。

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2. Crystallographic snapshots of host–guest interactions in drugs@metal–organic frameworks: towards mimicking molecular recognition processes

Mater. Horiz., 2018, Advance Article

DOI: 10.1039/C8MH00302E

Assisted by X-ray crystallography, the authors report a novel MOF with functional pores that can act as a receptor, organizing organic molecules of bio-technological interest. It allows an unprecedented correlation of the magnitude of the host–guest interactions with the uptake and stimuli-responsive release properties, paving the way for a more conscious design of new bio-carrier materials.

在X射线晶体学的辅助下，本文作者报道了一种具有功能性孔的新型MOF，可以作为受体，组织多种生物技术领域关注的有机分子。它使得主-客体间相互作用程度与摄取和刺激响应释放特性之间产生了前所未有的关联，为新生物载体材料的合理设计开辟了新方向。

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3. Surface confined titania redox couple for ultrafast energy storage

Mater. Horiz., 2018, Advance Article

DOI: 10.1039/C8MH00112J

This work reports a unique electrochemical phenomenon in 1D black TiO₂nanotube arrays, the ‘Ti³⁺/Ti⁴⁺ redox couple’, and proposes a new type of electrode material. Compared with other metal oxides that mainly perform redox reactions in the bulk, this ‘conductive surface’ confined redox systems enable much faster ion diffusion kinetics and provide an unprecedented rate capability for black TiO₂ in both supercapacitors and lithium ion batteries.

本工作报道了一维（1D）黑色TiO₂纳米管阵列中独特的电化学现象，即“Ti³⁺/Ti⁴⁺氧化还原对”，并提出了一种新型电极材料。与主要进行氧化还原反应的其他金属氧化物相比，这种“导电表面”局限的氧化还原体系使得离子扩散动力学更快，并且为超级电容器和锂离子电池中的黑色TiO₂提供了前所未有的速率性能。

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Polymer Chemistry (IF: 5.375)

1. Tumor pH and intracellular reduction responsive polypeptide nanomedicine with a sheddable PEG corona and a disulfide-cross-linked core

Polym. Chem., 2018, Advance Article

DOI: 10.1039/C8PY00579F

In this paper a new class of stimuli-responsive polypeptide nanoparticles are reported. These are sensitive to tumor pH (due to a sheddable PEG corona) and sensitive to reduction (due to the disulphide bond cross-linked cores). There is a synergistic effect from the dual-stimuli, triggering the anti-cancer drug release and enhancing cytotoxicity, which was analysed in vitro.

本文报道了一类新的刺激响应型多肽纳米颗粒，具有可脱落的PEG冠结构和二硫键交联核心，因此可响应肿瘤pH值和细胞内的还原环境。体外实验证明，这两种刺激具有协同效应，可以触发抗癌药物的释放并增强细胞毒性。

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Biomaterials Science (IF: 4.21)

1. Visible light induced electropolymerization of suspended hydrogel bioscaffolds in a microfluidic chip

Biomater. Sci., 2018, 6, 1371-1378

DOI: 10.1039/C7BM01153A

Researchers fabricated flexible 2D patterned hydrogels and 3D hydrogel microstructures using a visible light induced electropolymerization technique. Visible light was projected onto a photosensitive microfluidic chip and when an external voltage was applied the light acted as a 'virtual electrode', creating radicals and triggering the polymerisation process. This method required a comparatively low cost set up and the tunable 3D hydrogel grids were used as biocompatible scaffolds.

研究人员们利用可见光诱导电聚合技术制造了柔性二维（2D）图案的水凝胶和三维（3D）水凝胶微结构。将可见光投射到光敏性微流控芯片上，当施加外部电压时，光可以作为“虚拟电极”产生自由基并引发聚合过程。这种方法仅需要较低成本的设备，所得的可调3D水凝胶网格可作为生物相容性支架。

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