Journal of the American Chemical Society
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#1Changchun Ye (SCUT: South China University of Technology)H-Index: 6
#2Juzhe Liu (Beihang University)H-Index: 4
Last. Lin Gu (CAS: Chinese Academy of Sciences)H-Index: 127
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Developing a reliable strategy for the modulation of the texture, composition, and electronic structure of electrocatalyst surfaces is crucial for electrocatalytic performance, yet still challenging. Herein, we develop a facile and universal strategy, quenching, to precisely tailor the surface chemistry of metal oxide nanocatalysts by rapidly cooling them in a salt solution. Taking NiMoO4 nanocatalysts an example, we successfully produce the quenched nanocatalysts offering a greatly reduced oxyg...
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#1Taichi Koike (Tohoku University)H-Index: 2
#2Takumi Nukazawa (Tohoku University)H-Index: 1
Last. Takeaki Iwamoto (Tohoku University)H-Index: 35
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Complexes that could be switched between two electronic states by external stimuli have attracted much attention for their potential application in molecular devices. However, a realization of such a phenomenon with low-valent main-group element-centered complexes remains challenging. Herein, we report the synthesis of cyclic (alkyl)(amino)silylene (CAASi)-ligated monatomic silicon(0) complexes (silylones). The bis(CAASi)-ligated silylone adopts a π-localized ylidene structure (greenish-black co...
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#1Kunihiko Morihiro (UTokyo: University of Tokyo)H-Index: 9
#2Yuya Moriyama (UTokyo: University of Tokyo)H-Index: 1
Last. Akimitsu Okamoto (UTokyo: University of Tokyo)H-Index: 34
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Self-assembly properties and diversity in higher-order structures of DNA enable programmable tools to be used to construct algorithms at the molecular level. However, the utility of DNA-based programmable tools is hampered by the low orthogonality to natural nucleic acids, especially in complex molecular systems. To address this challenge, we report here the orthogonal regulation of DNA self-assembly by using an unnatural base pair (UBP) formation. Our newly designed UBP AnN:SyN is formed in com...
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#1Li-Bo Huang (SYSU: Sun Yat-sen University)H-Index: 3
#2Maria Di Vincenzo (University of Montpellier)H-Index: 2
Last. Mihail Barboiu (SYSU: Sun Yat-sen University)H-Index: 47
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Artificial water channels (AWCs) and their natural aquaporin counterparts selectively transport water. They represent a tremendous source of inspiration to devise biomimetic membranes for several applications, including desalination. They contain variable water-channel constructs with adaptative architectures and morphologies. Herein, we critically discuss the structural details that can impact the performances of biomimetic I quartets, obtained via adaptive self-assembly of alkylureido-ethylimi...
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#1Cheng Zhang (UQ: University of Queensland)H-Index: 16
#2Daniel VigilH-Index: 1
Last. Glenn H. FredricksonH-Index: 90
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The hexagonally close-packed (HCP) sphere phase is predicted to be stable across a narrow region of linear block copolymer phase space, but the small free energy difference separating it from face-centered cubic spheres usually results in phase coexistence. Here, we report the discovery of pure HCP spheres in linear block copolymer melts with A = poly(2,2,2-trifluoroethyl acrylate) ("F") and B = poly(2-dodecyl acrylate) ("2D") or poly(4-dodecyl acrylate) ("4D"). In 4DF diblocks and F4DF triblock...
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#1Xin Gui (Princeton University)H-Index: 7
#2Erxi Feng (ORNL: Oak Ridge National Laboratory)
Last. Robert Joseph Cava (Princeton University)H-Index: 140
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We describe the crystal structure and elementary magnetic properties of a previously unreported ternary intermetallic compound, Cr4PtGa17, which crystallizes in a rhombohedral unit cell in the noncentrosymmetric space group R3m. The crystal structure is closely related to those of XYZ half-Heusler compounds, where X, Y, and Z are reported to be single elements only, occupying three different face-centered-cubic sublattices. The new material, Cr4PtGa17, can be most straightforwardly illustrated b...
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#1Yan Zhou (NU: Nanjing University)H-Index: 3
#2Shengtang Liu (NU: Nanjing University)H-Index: 1
Last. Mengning Ding (NU: Nanjing University)H-Index: 31
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Inspired by the exciting physical/chemical properties in metal-organic frameworks (MOFs) of the redox-active tetrathiafulvalene (TTF) ligands, nickel bis(dithiolene-dibenzoic acid), [Ni(C2S2(C6H4COOH)2)2], has been designed and developed as an inorganic analogue of the corresponding TTF-type donors (such as tetrathiafulvalene-tetrabenzoate, TTFTB), where a metal site (Ni) replaces the central C═C bond. In this work, [Ni(C2S2(C6H4COOH)2)2] and In3+ have been successfully assembled into a three-di...
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#1Xuelin Dong (Fudan University)H-Index: 1
#2Chengxiang Ding (Nanjing Tech University)
Last. Gernot Frenking (Nanjing Tech University)H-Index: 105
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The cationic complex BeOCO+ is produced in a solid neon matrix. Infrared absorption spectroscopic study shows that it has a very high antisymmetric OCO stretching vibration of 2418.9 cm-1, which is about 71 cm-1 blue-shifted from that of free CO2. The quantum chemical calculations are in very good agreement with the experimental observation. Depending on the theoretical method, a linear or quasi-linear structure is predicted for the cation. The analysis of the electronic structure shows that the...
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#1Zhanchao Meng (MPG: Max Planck Society)H-Index: 3
#2Simon M Spohr (MPG: Max Planck Society)
Last. Alois Fürstner (MPG: Max Planck Society)H-Index: 124
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Many polycyclic marine alkaloids are thought to derive from partly reduced macrocyclic alkylpyridine derivatives via a transannular Diels-Alder reaction that forms their common etheno-bridged diaza-decaline core ("Baldwin-Whitehead hypothesis"). Rather than trying to emulate this biosynthesis pathway, a route to these natural products following purely chemical logic was pursued. Specifically, a Michael/Michael addition cascade provided rapid access to this conspicuous tricyclic scaffold and allo...
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#1Si-Cong Chen (PKU: Peking University)H-Index: 3
#2Qi Zhu (PKU: Peking University)
Last. Nan Zhang (PKU: Peking University)
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A new and general method to functionalize the C(sp3)-C(sp2) bond of alkyl and alkene linkages has been developed, leading to the dealkenylative generation of carbon-centered radicals that can be intercepted to undergo Ni-catalyzed C(sp3)-C(sp2) cross-coupling. This one-pot protocol leverages the easily procured alkene feedstocks for organic synthesis with excellent functional group compatibility without the need for a photoredox catalyst.
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Organic chemistry
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