【最新中稿作品】NIR-II有机/无机纳米杂化物、生物材料忆阻器、全透明日盲光电探测器等|cnt|gan|nir|光电探测器|化物|忆阻器|材料|生物材料|纳米

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标题

Management of fluorescent organic/inorganic nanohybrids for biomedical applications in the NIR-II region

作者

Benhao Li, Mengyao Zhao, Jing Lin, Peng Huang, Xiaoyuan Chen

引用

Chem. Soc. Rev., 2022,51, 7692-7714

DOI

https://doi.org/10.1039/D2CS00131D

研究介绍

第二近红外（NIR-II，100-1700nm）窗口中的生物医学荧光成像由于减少了组织的吸收、散射和自体荧光，为可视化生理和病理过程提供了巨大的潜力。

在过去的十年中，各种类型的NIR-II探针被报道。其中，NIR-II有机/无机纳米杂化材料由于其独特的性能，综合了有机和无机两种材料的优点而受到广泛关注。多功能有机/无机纳米杂化物提供了实现功能、可控尺寸和多种光学特性的可能性。

本教程综述了纳米杂化物中有机物和无机物的报道，以及它们在近红外荧光和寿命成像中的生物医学应用。最后，讨论了有机/无机纳米杂化材料在生物医学领域的应用前景。

中稿封面·一周精选

Volume18, Issue41 October 13, 2022

Titel

Continuous Single-Crystalline GaN Film Grown on WS2-Glass Wafer

DOI

https://doi.org/10.1002/smll.202270217

Abstract（上下滑动查看）

Use of 2D materials as buffer layers has prospects in nitride epitaxy on symmetry mismatched substrates. However, the control of lattice arrangement via 2D materials at the heterointerface presents certain challenges. In this study, the epitaxy of single-crystalline GaN film on WS2-glass wafer is successfully performed by using the strong polarity of WS2 buffer layer and its perfectly matching lattice geometry with GaN. Furthermore, this study reveals that the first interfacial nitrogen layer plays a crucial role in the well-constructed interface by sharing electrons with both Ga and S atoms, enabling the single-crystalline stress-free GaN, as well as a violet light-emitting diode. This study paves a way for the heterogeneous integration of semiconductors and creates opportunities to break through the design and performance limitations, which are induced by substrate restriction, of the devices.

Volume32, Issue42 October 17, 2022

Titel

Advances in Flexible Optoelectronics Based on Chemical Vapor Deposition-Grown Graphene

DOI

https://doi.org/10.1002/adfm.202270240

Abstract（上下滑动查看）

Graphene shows great potential for flexible optoelectronic devices owing to its unique 2D structure and excellent electronic, optical, and mechanical properties. Chemical vapor deposition (CVD) is the most promising method for fabricating large-area and high-quality graphene films at an acceptable cost; therefore enormous efforts have been attempted to investigate the flexible optoelectronic devices based on CVD-grown graphene. Here, recent advances and significant development of CVD-grown graphene towards flexible optoelectronics including photodetectors, organic solar cells, and light-emitting diodes are reviewed. Insight into the challenges of improvement of optoelectronic properties, work function tuning, as well as interfacial control of CVD-grown graphene for high-performance devices is provided. In particular, the availability to fabricate large-area devices on the flexible substrates is discussed, which is crucial to drive the practical use of CVD-grown graphene for future wearable optoelectronics.

Volume2, Issue10October 2022

Titel

Memristors with Biomaterials for Biorealistic Neuromorphic Applications

DOI

https://doi.org/10.1002/smsc.202270020

Abstract（上下滑动查看）

As emerging memristive materials, biomaterials exhibit unique features for biorealistic neuromorphic applications. In article number 2200028, Xiaoning Zhao, Haiyang Xu, and co-workers comprehensively review the state-of-the-art development of biomemristor devices with particular attention focused on their unique biorealistic features. Challenges and prospects toward the further development of biomemristors are also provided and discussed.

Volume 7, Issue 3 September 2022

Volume40, Issue19October1, 2022

Titel

Improving the Antimicrobial Performance of Amphiphilic Cationic Antimicrobial Peptides Using Glutamic Acid Full-Scan and Positive Charge Compensation Strategies

DOI

https://doi.org/10.1021/acs.jmedchem.2c01076

Abstract（上下滑动查看）

Nonselective toxicity of antimicrobial peptides (AMPs) needs to be solved urgently for their application. Temporin-PE (T-PE, FLPIVAKLLSGLL-NH2), an AMP extracted from skin secretions of frogs, has high toxicity and specific antimicrobial activity against Gram-positive bacteria. To improve the antimicrobial performance of T-PE, a series of T-PE analogues were designed and synthesized by glutamic acid full-scan, and then their key positions were replaced with lysine. Finally, E11K4K10, the highest therapeutic indicial AMP, was screened out. E11K4K10 was not easy to induce and produce drug-resistant bacteria when used alone, as well as it could also inhibit the development of the drug resistance of traditional antibiotics when it was used in combination with the traditional antibiotics. In addition, E11K4K10 had an excellent therapeutic effect on a mouse model of pulmonary bacterial infection. Taken together, this study provides a new approach for the further improvement of new antimicrobial peptides against the antimicrobial-resistance crisis.

Volume134, Issue44 November 2, 2022

Titel

Azulene-Fused Acenes

DOI

https://doi.org/10.1002/ange.202209286

Abstract

Non-alternant non-benzenoid π-conjugated polycyclic hydrocarbons (PHs) are expected to exhibit very different electronic properties from the all-benzenoid PHs. Herein, we report the synthesis and physical properties of three azulene-fused acene molecules (1, 2 and 3), which are isoelectronic to the pentacene, hexacene and heptacene, respectively. X-ray crystallographic analysis, NMR spectra, and theoretical calculations reveal a localised aromatic backbone comprising all the six- and five-membered rings while the seven-membered ring remains non-aromatic. They display properties of both azulene and acenes and are much more stable than the respective acenes. The dications of 1, 2 and 3 were formed by chemical oxidation. Notably, 32+ exhibited an open-shell diradical character (y0=30.2 %) as confirmed by variable-temperature NMR and ESR measurements, which can be explained by recovery of aromaticity of an 2,6-anthraquinodimethane unit annulated with two aromatic tropylium rings.

Volume 65, Issue 15 August 1, 2022

Titel

Fully Transparent and High-Performance ε-Ga2O3 Photodetector Arrays for Solar-Blind Imaging and Deep-Ultraviolet Communication

DOI

https://doi.org/10.1002/adpr.202270037

Abstract（上下滑动查看）

In article number 2200192, Wanjun Li, Ping-An Yang, Lijuan Ye, and co-workers propose a strategy to construct fully transparent and high-performance solar-blind deep ultraviolet photodetector arrays based on ε-Ga2O3 films using indium tin oxide (ITO), indium gallium zinc oxide (IGZO), and aluminum zinc oxide (AZO) transparent conductive oxides as electrodes. In addition, proof-of-concept ultraviolet imaging and optical communication demonstrate the strong application prospects of ε-Ga2O3-based solar-blind photodetectors in the above fields.

Volume 36, Issue 5 October ,2022

Titel

Penetration Mechanical Properties of Double-Layer Carbon Nanotube Films

DOI

https://doi.org/10.11858/gywlxb.20220508

Abstract

Carbon nanotube (CNT) films have broad application prospects in the fields of artificial muscles, electronic shielding, and impact protection, owing to their excellent mechanical and electrical conductivity properties. However, the latest studies mainly focus on the quasi-static mechanical properties of the CNT films, while the transverse impact mechanical properties and microscopic mechanisms are still under investigated. Herein, the mechanical behavior of CNT films under medium/low-speed penetration is experimentally and numerically investigated. The results show that the critical penetration speed of the single-layer CNT film is about 25 m/s, while the speed of the maximum energy absorption is about 30 m/s, for a 1 mm diameter steel ball impacting the CNT film. In contrast, the critical penetration speed of the double-layer CNT film is about 40 m/s, and the speed of the maximum energy absorption is about 60 m/s. Under the quasi-static condition, the damaged edge of the cavity in the CNT film is thinner and the stretching deformation is more prominent than those in the impact case; the intermediate interface modification by water, oil, and high vacuum grease can improve the impact mechanical properties and energy absorption effect of the double-layer CNT film. Overall, this work can provide a better understanding on the penetration mechanism of CNT films and guide the design of anti-impact structures.

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