Angewandte Chemie International Edition
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
The following papers are very important in the opinion of two referees.
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Half-Metallicity in Single-Layered Manganese Dioxide Nanosheets by Defect Engineering
Hui Wang, Jiajia Zhang, Xudong Hang, Dr. Xiaodong Zhang, Dr. Junfeng Xie, Prof. Bicai Pan and Prof. Yi Xie
A manganese dioxide monolayer was rendered half-metallic by a defect engineering strategy, which was confirmed by calculations. These theoretical studies showed that the half-metallicity of a single-layered MnO2 nanosheet can be observed for a wide range of vacancy concentrations and even in the presence of both Mn and O vacancies.
Solution-Grown Organic Single-Crystalline Donor–Acceptor Heterojunctions for Photovoltaics
Prof. Hanying Li, Congcheng Fan, Weifei Fu, Dr. Huolin L. Xin and Prof. Hongzheng Chen
Ideal candidates for high-performance photovoltaics, organic single-crystalline heterojunctions are difficult to prepare. Now, extended single-crystalline heterojunctions with consistent donor-top and acceptor-bottom structure throughout the substrate can be obtained from a mixed solution of donor and acceptor through sequential crystallization. These heterojunctions exhibit a significant photovoltaic effect.
Stereocomplexed Poly(Limonene Carbonate): A Unique Example of the Cocrystallization of Amorphous Enantiomeric Polymers
Prof. Finizia Auriemma, Prof. Claudio De Rosa, Dr. Maria Rosaria Di Caprio, Dr. Rocco Di Girolamo, Dr. W. Chadwick Ellis and Prof. Geoffrey W. Coates
When life gives you lemons, make a stereocomplex! Enantiomerically pure isotactic poly(limonene carbonate), derived from citrus oil and CO2, is an amorphous polymeric material in spite of its regular constitution and configuration. However, upon mixing together both enantiomers, a “zippering” interaction between chains of opposite configuration occurs, resulting in an overall semi-crystalline ensemble.
Magnet Design by Integration of Layer and Chain Magnetic Systems in a π-Stacked Pillared Layer Framework
Hiroki Fukunaga and Prof. Dr. Hitoshi Miyasaka
A pillared layer framework (PLF) was used to rationally design and fabricate a long-range ordered magnet with a phase transition temperature (Tc) of 82 K by integrating two low-dimensional magnetic materials, namely a layer magnetic system and a one-dimensional columnar magnetic system. Furthermore, Tc increased linearly with the applied pressure.
An Efficient Nanoscale Heterogeneous Catalyst for the Capture and Conversion of Carbon Dioxide at Ambient Pressure
Xiao-Huan Liu, Dr. Jian-Gong Ma, Dr. Zheng Niu, Prof. Dr. Guang-Ming Yang and Prof. Dr. Peng Cheng
Silver nanoparticles were supported on the zeolite-type metal–organic framework MIL-101 by a simple liquid impregnation method to yield Ag@MIL-101. CO2 and terminal alkynes could be converted into propiolic acids in the presence of the very active Ag@MIL-101 catalyst at atmospheric pressure and low temperature (50 °C).
Inducing Axial Chirality in a “Geländer” Oligomer by Length Mismatch of the Oligomer Strands
Michel Rickhaus, Linda Maria Bannwart, Dr. Markus Neuburger, Heiko Gsellinger, Kaspar Zimmermann, Dr. Daniel Häussinger and Prof. Dr. Marcel Mayor
A molecular dance ribbon: Similar to a dance ribbon pirouetting around its handling stick, an elongated second oligomer wraps itself around the oligophenyl backbone, thereby inducing chirality, in a new type of “Geländer” structure. The new helical molecule was fully characterized and the racemization behavior elucidated.
A Multiply Functionalized Base-Coordinated GeII Compound and Its Reversible Dimerization to the Digermene
Dr. Anukul Jana, Dr. Volker Huch, Prof. Dr. Henry S. Rzepa and Prof. Dr. David Scheschkewitz
Geed up germanium: A multiply functionalized digermene is obtained under very mild reaction conditions from an N-heterocyclic carbene (NHC)-coordinated germanium(II) precursor. Both the imino and chloro functionalities are tolerated throughout the entire synthetic route. The starting material can be regenerated by the re-addition of the NHC.
Transparent Metal Selenide Alloy Counter Electrodes for High-Efficiency Bifacial Dye-Sensitized Solar Cells
Yanyan Duan, Prof. Qunwei Tang, Juan Liu, Dr. Benlin He and Prof. Liangmin Yu
Transparent counter electrodes consisting of metal selenide binary alloys (Co, Ni, Cu, Fe, Ru) were synthesized and applied in bifacial dye-sensitized solar cells (DSSCs). These solar cells exhibit good energy conversion efficiencies regardless of whether the solar cell is irradiated from the front or from the rear.
Identification and Accurate Size Characterization of Nanoparticles in Complex Media
Lihong Liu, Prof. Bin He, Dr. Qian Liu, Dr. Zhaojun Yun, Xueting Yan, Dr. Yanmin Long and Prof. Guibin Jiang
(Nano)size matters: Capillary electrokinetic separation and inductively coupled plasma mass spectrometry (ICP-MS) were combined in a method that allows the identification and accurate size determination of nanoparticles in complex media (see picture). This method provides a powerful tool for investigating polydisperse multiple NP systems and rapid screening of NP-containing products.
Breathing Pores on Command: Redox-Responsive Spongy Membranes from Poly(ferrocenylsilane)s
Kaihuan Zhang, Xueling Feng, Dr. Xiaofeng Sui, Dr. Mark A. Hempenius and Prof. G. Julius Vancso
Redox-active porous membranes were synthesized from poly(ferrocenylsilane) PFS-based poly(ionic liquid)s (see picture; pore formation using ammonia/water). Reversible switching between more open and more closed porous structures, induced by oxidation and reduction, was demonstrated.
Scanning Electrochemical Microscopy of Individual Catalytic Nanoparticles
Tong Sun, Yun Yu, Brian J. Zacher and Prof. Michael V. Mirkin
Tip size matters: Extremely small polished platnium electrodes were used as scanning electrochemical microscopy tips to attain spatial resolution higher than that of ordinary atomic force microscopy imaging or super-resolution optical techniques. Electron transfer and catalytic hydrogen evolution at individual metal nanoparticles were visualized (HOPG=highly ordered pyrolytic graphite).