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“纳米领域”，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. A bilayered nanoshell for durable protection of single yeast cells against multiple, simultaneous hostile stimuli

Chem. Sci., 2018, Advance Article

DOI: 10.1039/C8SC01130C

An international team of scientists developed a soft biohybrid interfacial layer on individual living-cell surfaces. The group exposed the surfaces to a suspension of gold nanoparticles and L-cysteine to form a protecting functional layer, to which porous silica layers were bound. This resulted in pores with 3.9 nm diameter. Living cells in the bilayered nanoshells maintained high viability of approximately 96 %, after 5 cycles of exposure to high temperature, lyticase and UV light. This could be used in applications such as cell therapy.

一个国际研究团队开发出了一种用于单个活细胞表面的柔软生物混合界面保护层。该团队将细胞表面暴露在包含金纳米颗粒和L-半胱氨酸的悬浮液中形成保护功能层，再与多孔二氧化硅层相结合，由此形成了直径3.9 nm的孔。在高温、裂解酶和紫外线循环5次处理后，双层纳米壳中的活细胞仍保持了约96%的高存活率。该方法可以用于细胞疗法等应用。

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2. Silylation reactions on nanoporous gold via homolytic Si–H activation of silanes

Chem. Sci., 2018, Advance Article

DOI: 10.1039/C8SC01427B

Researchers in China report homolytic activation of Si-H bonds on the surface of nanoporous gold, forming hydrogen radicals and [Au]-[Si] intermediates. This led to highly selective mono and sequential alcoholysis of dihydrosilane, and a new bis-silylation reaction of cyclic ethers. This work highlights the surface reactivity of nanocatalysts and the possibility of discovering new reactions.

清华大学和天津理工大学的研究人员报道了纳米多孔金表面上的Si-H键均裂活化，形成氢自由基和[Au]-[Si]中间体。这导致了二氢硅烷的高选择性单醇解和顺序醇解，以及环醚的新双硅烷化反应。这项工作强调了纳米催化剂的表面反应性以及发现新反应的可能性。

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Nanoscale Horizons (IF: pending)

1. Realizing the nanoscale quantitative thermal mapping of scanning thermal microscopy by resilient tip–surface contact resistance models

Nanoscale Horiz., 2018, Advance Article

DOI: 10.1039/C8NH00043C

This work reports the first quantitative models to describe thermal contact resistance for a variety of surfaces. Previous scanning thermal microscopy techniques had only been able to qualitatively describe the properties. This work enables a unique platform for thermal measurement at nanometer spatial resolution, which opens up opportunities to study quantified thermal properties across composite interfaces, multi-layer structures, photovoltaic devices, microelectronics, etc.

本文报道了首个用于描述各种表面热接触电阻的定量模型，而此前的扫描热显微镜技术只能定性描述这些性质。这项工作为在纳米空间分辨率上的热测量提供了一个独特的平台，为研究复合材料界面、多层结构、光伏器件、微电子器件等的量化热性质提供了新机遇。

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2. Visible light active nanofibrous membrane for antibacterial wound dressing

Nanoscale Horiz., 2018, Advance Article

DOI: 10.1039/ C8NH00021B

A new class of hydrogel nanofibrous membranes that show visible light-induced disinfection has been developed. Conventional wound dressing materials rely on the release of antiseptic agents but this study shows a different concept based on the generation of reactive singlet oxygen from the photoactive polymers inside the nanofibers upon visible light irradiation.

本文报道了一类新的水凝胶纳米纤维膜，可实现可见光诱导的消毒。传统的伤口敷料材料依赖于抗菌剂的释放，但本研究采用了完全不同的概念，基于可见光照射下纳米纤维内部光敏聚合物生成的活性单线态氧来进行杀菌。

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3. pH-Triggered self-assembly and hydrogelation of cyclic peptide nanotubes confined in water micro-droplets

Nanoscale Horiz., 2018, Advance Article

DOI: 10.1039/C8NH00009C

This work introduces cyclic peptide nanotubes as excellent scaffolds for the controlled fibrillation confined in water droplets. The supramolecular polymerization was externally triggered by pH modification. This methodology constitutes a keystone towards artificial materials for the development of bottom up approaches to understand and control the basic principles underlying the behaviour of more complex confined tubular networks.

本文介绍了一种环状肽纳米管，可以作为优良的框架用于水滴中受限的可控纤维化。这种超分子聚合反应通过调节pH从外部触发。该方法为构建人造材料奠定了基础，有助于开发自下而上的方法来理解和控制更为复杂的受限管状网络行为背后的基本原理。

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