RSC主编推荐：纳米领域精彩文章快览（免费阅读原文）

英国皇家化学会（RSC）是一个拥有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！

Nanoscale Horizons (IF: pending)

1. 2D transition metal dichalcogenide nanosheets for photo/thermo-based tumor imaging and therapy

Nanoscale Horiz., 2018, Advance Article

DOI: 10.1039/C7NH00158D

This review article summarizes the recent advances in the synthesis, modification, and photo/thermo-based tumor imaging and therapy of 2D transition metal dichalcogenide nanosheets.

本篇综述总结了二维过渡金属二硫属化合物纳米片的合成、修饰和基于光/热的肿瘤成像和治疗等方面的最新进展。

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Chemical Science (IF: 8.668)

1. Design of DNA nanostructure-based interfacial probes for the electrochemical detection of nucleic acids directly in whole blood

Chem. Sci., 2018, Advance Article

DOI: 10.1039/C7SC04663D

Scientists in China have constructed a DNA nanostructure-based electrochemical sensor that uses tetrahedral DNA nanostructures (TDNs), for direct detection of biomolecules. The use of TDNs significantly suppressed electrochemical background signals compared to traditional linear DNA probes. The group demonstrated quantitative, single-step DNA detection in the picomolar range in less than 10 minutes. This work has the potential to be used to design other analytical systems.

南京和上海的研究者们构建了一种基于四面体DNA纳米结构（TDNs）的电化学传感器，可以用于生物分子的直接检测。与传统的线性DNA探针相比，使用TDNs探针可以有效抑制电化学背景信号。该研究小组成功实现了10分钟内的一步法DNA定量检测，检测限达到皮摩尔。这项工作亦有望用于设计其他分析体系。

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2. A model for optical gain in colloidal nanoplatelets

Chem. Sci., 2018, Advance Article

DOI: 10.1039/C7SC04294A

US researchers studied optical gain (OG) properties in 4-monolayer thick cadmium chalcogenide nanoplatelets (CdSe NPLs), in order to determine characteristics that affect OG. Using transient absorption spectroscopy and amplified spontaneous emission (ASE) measurement, the group showed that the OG threshold is lateral area independent and, for samples of the same NPL size, the OG and ASE threshold increases with their optical density at pump wavelength. The group then proposed an OG model for 2D CdSe NPLs, which may be applicable to other 2D and 1D nanocrystals.

美国的研究者考察了4层的镉硫属化合物厚纳米片（CdSe NPLs）的光学增益（OG）性质，以确定影响光学增益（OG）的因素。通过瞬态吸收光谱和放大自发发射（ASE）测量，结果表明OG阈值与侧面积无关，并且对于具有相同纳米片大小的样品，OG和ASE阈值随着它们在泵浦波长下光密度的增大而增加。该小组还提出了一种适用于二维CdSe NPLs的OG模型，该模型也有可能适用于其他二维和一维纳米晶体。

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