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Chemistry Letters
The Chemical Society of Japan
Chemistry Letters

The Chemical Society of Japan

0366-7022

Chemistry Letters/Journal Chemistry LettersSCICCR
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    Molecular Functionalization of Carbon Nanotubes towards Near Infrared Photoluminescent Nanomaterials

    Shiraki, Tomohiro
    8页
    查看更多>>摘要：Local chemical functionalization of single-walled carbon nanotubes (SWCNTs) has been developed as a means of defect doping to enhance the near infrared photoluminescence properties of the materials. Wavelength-tunable and exciton trapping-induced bright emission appears from locally functionalized SWCNTs (If-SWCNTs). Molecularly designed If-SWCNTs based on our approach produce new dynamic switching functionalities and greater shifts of the emission wavelength, which gives unique exciton properties to If-SWCNTs.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Regulating Cellular Responses via Molecular Assembly in Cell Milieu for Cancer Therapy

    Wu, XiaHu, XunwuZhang, Ye
    6页
    查看更多>>摘要：Molecular assembly is a widely applied synthetic strategy for the construction of multimolecular architecture at a nanoscale or microscale that can simultaneously target numerous components. Upon the control over size, shape, valency, etc., molecular assembly can fulfill demands to regulate cellular responses even cell fate by approaching different cellular sub-organelles as potential cancer therapy.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Recent Development in Polymer Reactions for Overcoming Synthetic Limitations in Chain-growth Polymerization

    Nishikawa, TsuyoshiOuchi, Makoto
    7页
    查看更多>>摘要：In chain-growth polymerization, the polymerization behaviors are governed by the nature of monomer depending on the side-chain structure (e.g. conjugated/non-conjugated, electron-rich/deficient), leading to limitations in (co)polymers we can synthesize. This highlight review summarizes recent development in polymer reactions to overcome such limitations. The key is the design of transformable monomers as well as the utilization of novel organic transformations.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Advances in Artificial Bilayer Lipid Membranes as a Novel Biosensing Platform: From Drug-screening to Self-assembled Devices

    Ma, TengSato, MadokaKomiya, MakiFeng, Xingyao...
    8页
    查看更多>>摘要：Because of their unique structures and properties, self-assembled bilayer lipid membranes are a subject of intense interest. In this Highlight Review, we summarize recent progress made in research related to bilayer lipid membranes, including the formation of stable free-standing lipid membranes, applications of artificial lipid bilayers as a model cell membrane to study biological processes, and new bio-hybrid devices based on bilayer lipid membranes.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Layer-by-layer Functionalization of Gold Nanorods by Polyelectrolytes to Control Surface Spacer and Precisely Tune the Surface Plasmon Resonance Position

    Jegat, CelineLaurent, Guillaume
    5页
    查看更多>>摘要：We present a layer-by-layer functionalization of gold nanorods (GNRs) by polyelectrolytes in order to control precisely the spacer surrounding the metallic nanoparticles but also to modulate its plasmonic properties. Alternate functionalization with negatively and positively charged polyelectrolytes ensures a 2 nm step control of the spacer from 0 nm up to 10 nm, depending on the number of layers. Such process changes the local refractive index and thus induces a red shift of the surface plasmon resonance. Both solution and solid samples were studied.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Hydrogenation of 4-Propylphenol over Carbon-supported Palladium Catalyst without External Hydrogen: Effect of Carbon Support and Palladium Loading

    Yamaguchi, AritomoShirai, MasayukiNagasawa, YoshiyukiHiraishi, Yushi...
    4页
    查看更多>>摘要：The ring hydrogenation of 4-propylphenol in aqueous ethanol solution was studied over graphite- and activated carbon-supported palladium catalysts (Pd/G and Pd/C) with 0.1-5 wt % of palladium loadings without using external hydrogen. Decomposition of ethanol produced hydrogen which was responsible for the hydrogenation of 4-propylphenol over palladium metal particles on both the supports in aqueous medium. The different hydrogenation behaviors were discussed based on surface properties of supports.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Quasielastic Neutron Scattering Study on Polymorphism of Glycerol Deuterated Triacylglycerols: Comparison with Saturated, Trans-unsaturated and Cis-unsaturated Triacylglycerols

    Kaneko, FumitoshiYamamuro, OsamuTakechi, ChikayoKawaguchi, Tatsuya...
    4页
    查看更多>>摘要：The relationship between the polymorphism and dynamic properties of acyl chains in triacylglycerols (TAGs) was studied using incoherent quasielastic neutron scattering (IQENS). The influence of cis- and trans-unsaturation was also investigated by comparing the following monoacid TAGs, tristearin, trielaidin, triolein, and trierucin. Glycerol-deuterated TAG samples were employed for the IQENS measurements to reduce the incoherent scattering of the glycerol backbone. Irrespective of the difference of acyl chains, these TAGs showed similar dynamical properties under the same temperature and polymorph. The molecular motion in the beta phase with tightly-packed acyl chains showed the characteristics of a harmonic oscillator up to 300 K. In contrast, the a phase with loosely-packed acyl chains started diffusive molecular motions around 190 K.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Molecule-based Mixed Conductor of Proton and Electron Composed of Neutral pi-Planar Metal Complexes

    Kimura, YojiroYoshida, YukihiroMaesato, MitsuhikoKitagawa, Hiroshi...
    3页
    查看更多>>摘要：A molecule-based mixed conductor of proton and electron was synthesized by modifying a nickel(III) dithiolene complex with 1,4-naphthoquinone skeletons. The complex forms a pi-stacking column flanked by an infinite hydrogen-bonding chain of water molecules. Room-temperature (RT) proton conductivity was 7.2 x 10(-7) S cm(-1), which is derived from protons attached to carbonyl oxygens through the chain of water molecules. The compound also shows a relatively high RT electronic conductivity of 4.1 x 10(-3) S cm(-1) and semiconducting behavior with a small activation energy of 66 meV, which originates from the pi-stacking column composed of the neutral radical complexes.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Copper(I)-mediated C-N/C-C Bond-forming Reaction with Tetrafluoroethylene for the Synthesis of N-Fluoroalkyl Heteroarenes via an Azacupration/Coupling Mechanism

    Ishida, NaoyoshiAdachi, TakuyaIwamoto, HiroakiOhashi, Masato...
    3页
    查看更多>>摘要：A novel copper(I)-mediated C-N/C-C bond-forming reaction involving tetrafluoroethylene (TFE), imidazolide or benz-imidazolide salts, and aryl iodides has been developed. This three-component coupling reaction can provide highly functionalized N-fluoroalkyl heteroaromatic compounds in up to 98% yield via a one-pot procedure. The azacupration of TFE with the copper(I) imidazolide species to afford the fluoroalkylcopper(I) complex is the key process in the transformation.
      原文链接:
    • NSTL
    • Chemical Soc Japan

    Selective Extraction and Separation of Titanium from Vanadium Slag and Preparation of TiO2

    Liu, ShiyuanHe, XiaoboWu, ShunLiu, Yahui...
    3页
    查看更多>>摘要：Vanadium slag usually contains 13.52-19.03 mass % V2O3 and 6.92-14.35 mass % TiO2. The V in vanadium slag is effectively extracted by traditional methods, whereas Ti, a valuable metal, cannot be used. To effectively utilize the Ti, a new method for preparing TiO2 from vanadium slag via AlCl3 chlorination-TiCl4 hydrolysis was proposed in this work. The chlorination of Ti in vanadium slag, thermodynamics of hydrolysis of metal chlorides (TiCl4 and AlCl3), and hydrolysis of chlorides were investigated. Rutile TiO2 containing a small amount of impurities (1.58 mass % Al and 2.03 mass % Cl) was synthesized.
      原文链接:
    • NSTL
    • Chemical Soc Japan