Molecular model of a 4-layered supramolecular network on a HOPG surface

Toward conformational identification of molecules in 2D and 3D self-assemblies on surfaces

  • Ali Hamadeh
  • Frank Palmino
  • Frédéric Chérioux
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  • The on-surface synthesis of graphene nanoribbons with control over their length and final surface coverage is desirable for electronic applications. Here, the authors outline a protocol to produce long and isolated graphene nanoribbons on an Au(111) surface, achieving lengths of up coverage down to ~0.4 monolayer, of potential value for mono-molecular electronics. to 50 nm and a low surface coverage down to ~0.4 monolayer, of potential value for mono-molecular electronics.

    • Umamahesh Thupakula
    • We-Hyo Soe
    • Erik Dujardin
    ArticleOpen Access
  • The abiotic production of molecular oxygen in carbon dioxide-rich planetary atmospheres is important in understanding astrochemical reactions and potentially the origin of life on Earth. Here, the authors demonstrate that the low-energy reaction between helium ions, as found in solar winds, and carbon dioxide produces molecular oxygen.

    • Yaya Zhi
    • Qiang Guo
    • Shan Xi Tian
    ArticleOpen Access
  • Diterpene glycosyltransferase UGT76G1 is a key enzyme in the biosynthesis of rebaudioside A, a naturally sweet-tasting compound, however, its poor thermostability hinders its industrial application. Here, the authors use a computational design strategy to generate a mutant of UGT76G1 that exhibits improved thermostability and enzymatic activity.

    • Seong-Ryeong Go
    • Su-Jin Lee
    • Eui-Jeon Woo
    ArticleOpen Access
  • Platinum dispersed on metal oxide supports is widely used for industrially important catalysis such as the reverse water gas shift reaction, but active site migration and subsequent alterations in catalytic performance are still not fully understood. Here, the use of platinum on ceria nanodomes shows the detrimental effect of migration of platinum nanoparticles to titania supports at elevated temperatures.

    • Haodong Wang
    • Ryuichi Shimogawa
    • Anatoly I. Frenkel
    ArticleOpen Access
  • Gas chromatography is a useful tool to identify and characterize wines, usually by selecting some compounds for a particular classification problem, yet, with limited success. Here, the authors decode the estates perfectly and age 50% correctly of twelve red Bordeaux wines from unrestricted, raw gas chromatograms using machine learning.

    • Michael Schartner
    • Jeff M. Beck
    • Alexandre Pouget
    ArticleOpen Access
  • Non-cell-permeable cryoprotectants exhibit cryopreserving effects by preventing intracellular ice crystal formation, but these can damage cells due to high osmotic pressure and dehydration. Here, the authors developed a poly(zwitterion) isotonic cryoprotectant that forms a firm matrix around cells that prevents the influx of ice crystal nuclei without the need for high osmotic pressure and dehydration.

    • Yui Kato
    • Yuya Matsuda
    • Kosuke Kuroda
    ArticleOpen Access
  • The oxygen evolution reaction (OER) is a key enabler of sustainable chemical energy storage. Here, the author assesses the current status of protocols for benchmarking the OER in materials- and device-centered investigations and makes suggestions for more comparable data.

    • Marcel Risch
    CommentOpen Access
  • Molecular skeletal editing has a wide range of applications in late-stage derivatization, but metal–carbon exchange is underexplored due to the challenges in selectively cleaving highly inert chemical bonds and forming stable intermediates. Here, skeletal metalation of lactams enables a carbonyl-to-nickel exchange via Ni(0) reagent-mediated selective C–N bond oxidative addition and decarbonylation, generating synthetically useful organonickel reagents for the deletion and exchange of single atoms in the lactam core.

    • Huijuan Guo
    Research HighlightOpen Access
  • Andrew Goodwin is Professor of Materials Chemistry and a Professorial Research Fellow at the University of Oxford. His research focuses on the dual aspects of flexibility and disorder in functional materials, and his group of about 10–15 researchers is based in Oxford’s Inorganic Chemistry Laboratory.

    Q&AOpen Access
  • Dr Camille Bishop is an incoming Assistant Professor in the Department of Chemical Engineering and Materials Science at Wayne State University. She obtained her PhD in chemistry at the University of Wisconsin—Madison, where she prepared glasses with liquid crystal-like packing using physical vapor deposition, after obtaining her B.S. in chemistry from the University of Chicago.

    Q&AOpen Access
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Open Questions in Chemistry

In spite of decades of research and the enormous progress made, chemists continue to grapple with poorly understood aspects of the world around us. This collection aims to uncover open questions across the breadth of the chemical sciences. Each Comment provides an overview of a focused field of research, identifies key open questions, and gives expert opinion on how challenges in answering these questions might be overcome.
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