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Nano Lett 2022 May 24. Epub 2022 May 24.

Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, United States.

The surface functionalization of two-dimensional (2D) materials with organic electron donors (OEDs) is a powerful tool to modulate the electronic properties of the material. Here we report a novel molecular dopant, Me-OED, that demonstrates record-breaking molecular doping to MoS, achieving a carrier density of 1.10 ± 0. Read More

PLoS One 2022 24;17(5):e0268767. Epub 2022 May 24.

Vaccine Research Center, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America.

Since the outbreak of the COVID-19 pandemic, widespread infections have allowed SARS-CoV-2 to evolve in human, leading to the emergence of multiple circulating variants. Some of these variants show increased resistance to vaccine-elicited immunity, convalescent plasma, or monoclonal antibodies. In particular, mutations in the SARS-CoV-2 spike have drawn attention. Read More

J Org Chem 2022 May 23. Epub 2022 May 23.

Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan.

Visible-light-induced decarboxylative and deboronative reactions using two-molecule organic photoredox catalysts, namely, phenanthrene (Phen) and biphenyl (BP), as electron donors and 9-cyano-10-methoxycarbonylanthracene as an electron acceptor were achieved. The high solubility of significantly improved the reaction efficiency and product yield. In addition, the facile tuning of the oxidation potential of the electron-donor molecule via the replacement of Phen with BP enabled the application of the two-molecule photoredox system to a wide range of substrates. Read More

J Inorg Biochem 2022 May 10;233:111853. Epub 2022 May 10.

Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India. Electronic address:

Herein we report the synthesis of five new mononuclear mixed ligand oxidovanadium(IV) complexes [VO(L)(L)] (1-5) with tridentate O,N,O-donor aroylhydrazones as main ligand (HL) and N,N-chelating 2,2'-bipyridine (bipy) and 1,10-phenanthroline (phen) as co-ligand (L). The complexes were characterized by elemental and thermogravimetric analysis (TGA), IR, UV-vis, and electron paramagnetic resonance (EPR) spectroscopy, electrospray ionization-mass spectrometry (ESI-MS) and cyclic voltammetry (CV). The structure of 1-5 was confirmed by single crystal X-ray analysis and also optimized by density functional theory (DFT) methods. Read More

Photochem Photobiol Sci 2022 May 20. Epub 2022 May 20.

Université catholique de Louvain (UCLouvain), Institut de la Matière Condensée et des Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1, bte L4.01.02, 1348, Louvain-la-Neuve, Belgium.

A series of nine [Ir(piq)(LL)].PF photosensitizers, where piqH = 1-phenylisoquinoline, was developed and investigated for excited-state electron transfer with sacrificial electron donors that included triethanolamine (TEOA), triethylamine (TEA) and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole (BIH) in acetonitrile. The photosensitizers were obtained in 57-82% yield starting from the common [Ir(piq)µ-Cl] precursor and were all characterized by UV-Vis absorption as well as by steady-state, time-resolved spectroscopies and electrochemistry. Read More