Showing papers in "Chemistry Letters in 2019"
TL;DR: The first method for decarbonylative direct arylation using acyl fluorides is reported, and it is reported that this reaction proceeds, only when acyl fluoride is used, and other acyl halides cannot be used.
Abstract: The first method for decarbonylative direct arylation using acyl fluorides is reported. This reaction proceeds, only when acyl fluorides are used, and other acyl halides cannot be used. The reactio...
45 citations
TL;DR: Palladium-catalyzed carbon-carbon and carbon-heteroatom bond construction are among the most significant and powerful methods in organic synthesis as discussed by the authors, and many investigations are focusing on the appli...
Abstract: Palladium-catalyzed carbon-carbon and carbon-heteroatom bond construction are among the most significant and powerful methods in organic synthesis. Numerous investigations are focusing on the appli...
45 citations
TL;DR: Visible-to-UV photon upconversion based on triplet-triplet annihilation (TTA-UC) sensitized by lead halide perovskite nanocrystals is demonstrated for the first time in this paper.
Abstract: Visible-to-UV photon upconversion based on triplet-triplet annihilation (TTA-UC) sensitized by lead halide perovskite nanocrystals is demonstrated for the first time. The surface modification of na...
39 citations
TL;DR: The conformations and planar chirality of macrocyclic hosts are of great importance because of their large influence on the complexation abilities and selectivities of the host molecules as mentioned in this paper.
Abstract: The conformations and planar chirality of macrocyclic hosts are of great importance because of their large influence on the complexation abilities and selectivities of the host molecules. Pillar[n]...
37 citations
TL;DR: The direct and selective replacement of C–H bonds in aromatic compounds with C–B bonds represents an ideal approach to arylboron compounds.
Abstract: The direct and selective replacement of C–H bonds in aromatic compounds with C–B bonds represents an ideal approach to arylboron compounds. Despite the tremendous advances during the past fifteen y...
33 citations
TL;DR: In this article, a database for 240 types of lithium-ion conducting solid polymer electrolytes was constructed and analyzed by machine learning, and the complexity of the polymer composites as electrolyte was analyzed.
Abstract: A database for 240 types of lithium-ion conducting solid polymer electrolytes was newly constructed and analyzed by machine learning. Despite the complexity of the polymer composites as electrolyte...
32 citations
TL;DR: The interfacial structure of the perfluoro-sulfonic acid ionomer and Pt-loaded carbon in a catalyst ink significantly influences the properties of the catalyst layer in polymer electrolyte fuel as mentioned in this paper.
Abstract: The interfacial structure of the perfluoro-sulfonic acid ionomer and Pt-loaded carbon in a catalyst ink significantly influences the properties of the catalyst layer in polymer electrolyte fuel cel...
24 citations
TL;DR: The stabilities of organic dyes have been controlled by host-guest complexation and the hybrids have been regarded as novel photofunctional materials as discussed by the authors, and the dyes encapsulated i...
Abstract: The stabilities of organic dyes have been controlled by host-guest complexation and the hybrids have been regarded as novel photofunctional materials. In the present review, the dyes encapsulated i...
23 citations
TL;DR: Selones, since their first report in 1963, have attracted significant interest with respect to their bonding, structure and more importantly as an ancillary ligand for complexation with various metamodels.
Abstract: Selones, since their first report in 1963, have attracted significant interest with respect to their bonding, structure and more importantly as an ancillary ligand for complexation with various met...
23 citations
TL;DR: In the past decade, libraries of iridium organometallic arene compounds have expanded rapidly, with the majority of their applications aimed towards effective catalysts and potential anti-cancer drugs.
Abstract: In the past decade, libraries of iridium organometallic arene compounds have expanded rapidly, with the majority of their applications aimed towards effective catalysts and potential anti-cancer dr...
22 citations
TL;DR: An epitaxial Li2MnO3(001) thin film electrode with layered rock-salt structure was tested in an all-solid-state battery configuration for the first time as mentioned in this paper.
Abstract: An epitaxial Li2MnO3(001) thin film electrode with layered rock-salt structure was tested in an all-solid-state battery configuration for the first time. Using amorphous Li3PO4 solid electrolyte, g...
TL;DR: Fusion is a relatively new concept to produce unique members of the porphyrin family as mentioned in this paper, and a representative compound formed by fusion is N-fused porphrin, which is synthesized from N-confused polymorphin.
Abstract: Fusion is a relatively new concept to produce unique members of the porphyrin family. A representative compound formed by fusion is N-fused porphyrin, which is synthesized from N-confused porphyrin...
TL;DR: In this paper, the authors theoretically studied reaction paths of Wohler's urea synthesis using the artificial force induced reaction method and the rate constant matrix contraction method, and the systematic search resulted in
Abstract: We theoretically studied reaction paths of Wohler's urea synthesis using the artificial force induced reaction method and the rate constant matrix contraction method. The systematic search resulted...
TL;DR: In this article, the synthesis and characterization of a novel hybrid nano-structure, co-occurrence-coverage, has been presented for contrast agents for various imaging applications.
Abstract: Recently, nanoparticles have emerged as promising contrast agents for various imaging applications. In this paper, we present the synthesis and characterization of a novel hybrid nano-structure, co...
TL;DR: In this paper, a new class of anisotropic nanostructures, Ultrathin gold nanowires (AuUNWs) and nanorods with diameters smaller than the critical dimension for quantization (∼2 nm), are introduced.
Abstract: Ultrathin gold nanowires (AuUNWs) and nanorods (AuUNRs) with diameters smaller than the critical dimension for quantization (∼2 nm), are a new class of anisotropic nanostructures. Due to their uniq...
TL;DR: In this paper, organic long-persistent luminescence can be observed in any film fabrication method, such as spin coated, thermally evaporated and melt casted, although photophysical properties are independent on...
Abstract: Organic long-persistent luminescence can be observed in any film fabrication method, such as spin coated, thermally evaporated and melt casted. Although photophysical properties are independent on ...
TL;DR: In this article, an efficient luminescent molecule exhibiting thermally activated delayed fluorescence with a long-delayed fluorescence lifetime of 0.8 ms was reported. Although the reverse intersystem crossing rate c...
Abstract: We report an efficient luminescent molecule exhibiting thermally activated delayed fluorescence with a long-delayed fluorescence lifetime of 0.8 ms. Although the reverse intersystem crossing rate c...
TL;DR: In this article, the effect of π-conjugation length on chiroptical properties in circular dichroism (CD) and circularly polarized luminescence (CPL) spectra was investigated.
Abstract: To elucidate the effect of π-conjugation length on chiroptical properties in circular dichroism (CD) and circularly polarized luminescence (CPL) spectra, stereogenic oligophenylenes containing biph...
TL;DR: The unique α-cationic phosphanes, in which one or more positively charged groups are directly attached to the phosphorus center, dramatically affects both the physicochemical propert....
Abstract: The unique architecture of α-cationic phosphanes, in which one or more positively charged groups are directly attached to the phosphorus center dramatically affects both the physicochemical propert...
TL;DR: In this article, a Ni3Al intermetallic nano-compound was successfully prepared by a chemical method at 600 °C in a LiCl-CaH2 system.
Abstract: Porous Ni3Al intermetallic nano-compound was successfully prepared by a chemical method at 600 °C in a LiCl-CaH2 system. The prepared powder had a crystal structure completely identical to Ni3Al ph...
TL;DR: In this article, an efficient benzene ring construction method using oxadiazinones as a platform molecule has been developed, using cycloalkynes and arynes as a preconditioner.
Abstract: An efficient benzene ring construction method using oxadiazinones as a platform molecule has been developed. Sequential reactions of oxadiazinones with cycloalkynes and arynes afforded partially re...
TL;DR: In this paper, the authors proposed defect-free mixed-matrix membranes via the solution-cast process using polyethylene glycol (PEG)-grafted metal-organic polyhedra (MOPs).
Abstract: Polyethylene glycol (PEG)-grafted metal–organic polyhedra (MOPs) provided defect-free mixed-matrix membranes via the solution-cast process. Compared to the neat PEG-based membranes, the membranes p...
TL;DR: Bilayer-type layered herringbone (LHB) packing is of great importance because of its remarkably high layered crystallinity and its ability to form extremely smooth ultrathin films which are useful as mentioned in this paper.
Abstract: Bilayer-type layered herringbone (LHB) packing is of great importance because of its remarkably high layered crystallinity and its ability to form extremely smooth ultrathin films which are useful ...
TL;DR: In this article, the synthesis of azole-containing triarylmethanes via the Cu-catalyzed desulfonylative reaction of benzhydryl sulfone derivatives with azoles is described.
Abstract: The synthesis of azole-containing triarylmethanes via the Cu-catalyzed desulfonylative reaction of benzhydryl sulfone derivatives with azoles is described. Various azoles such as 1,3-thiazole and 1...
TL;DR: The largest CO2 permeance is close to 40,000 GPU (the highest one ever reported) as mentioned in this paper, which is the state-of-the-art performance for PDMS nanomembranes.
Abstract: Fabrication and gas permselective behavior of free-standing polydimethylsiloxane (PDMS) nanomembranes are discussed. The largest CO2 permeance is close to 40,000 GPU (the highest one ever reported)...
TL;DR: To construct an artificial viral capsid encapsulated short single-stranded DNA, a β-annulus peptide conjugated with ssDNA through a disulfide bond at the N-terminus (DNA-SS-β-Annulus) was synthesized.
Abstract: To construct an artificial viral capsid encapsulated short single-stranded DNA, a β-annulus peptide conjugated with ssDNA through a disulfide bond at the N-terminus (DNA-SS-β-Annulus) was synthesiz...
Abstract: The active oxygen species for ethylene epoxidation on Ag surfaces has been a long-standing issue. We conducted in situ observations of Ag(111) surfaces under exposure to ethylene and oxygen gases w...
TL;DR: In this article, the clickability of various alkenyl and alkyl azides in the strain-promoted cycloaddition with dibenzo-fused cyclooctynes was investigated.
Abstract: The clickabilities of various alkenyl and alkyl azides in the strain-promoted cycloaddition with dibenzo-fused cyclooctynes were investigated. Although alkenyl azides generally exhibited lower clic...
TL;DR: The efficient C-H borylation of a variety of aromatic hydrocarbons and heteroarenes has been achieved using an iron complex bearing a quinoline-based PNN pincer ligand.
Abstract: The efficient C-H borylation of a variety of aromatic hydrocarbons and heteroarenes has been achieved using an iron complex bearing a quinoline-based PNN pincer ligand. Mechanistic studies revealed...
TL;DR: In this paper, the effects of addition of oleic acid (OA) on the stability of CsPbBr3 quantum dot dispersions in toluene during storage and light irradiation were investigated.
Abstract: We investigated the effects of addition of oleic acid (OA) on the stability of CsPbBr3 quantum dot (QD) dispersions in toluene during storage and light irradiation. Excess amounts of OA degraded th...