栄長 泰明 (エイナガ ヤスアキ)

Einaga, Yasuaki

写真a

所属(所属キャンパス)

理工学部 化学科 (矢上)

職名

教授

HP

外部リンク

経歴 【 表示 / 非表示

  • 1997年04月
    -
    1998年03月

    理化学研究所 ,ジュニアリサーチアソシエイト

  • 1998年04月
    -
    1999年11月

    日本学術振興会 ,特別研究員

  • 1999年11月
    -
    2001年03月

    東京大学 ,助手

  • 2001年04月
    -
    2003年03月

    慶應義塾大学理工学部化学科, 専任講師

  • 2003年04月
    -
    2011年03月

    慶應義塾大学理工学部化学科, 助教授/准教授

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学歴 【 表示 / 非表示

  • 1994年03月

    東京大学, 理学部

    大学, 卒業

  • 1996年03月

    東京大学, 理学系研究科, 化学専攻

    大学院, 修了, 修士

  • 1999年03月

    東京大学, 工学系研究科, 応用化学専攻

    大学院, 修了, 博士

学位 【 表示 / 非表示

  • 博士(工学), 東京大学, 1999年03月

 

研究分野 【 表示 / 非表示

  • 機能物性化学 (機能物質化学)

 

論文 【 表示 / 非表示

  • Fabrication and electrochemical properties of boron-doped SiC

    Uchiyama K., Yamamoto T., Einaga Y.

    Carbon (Carbon)  174   240 - 247 2021年04月

    ISSN  00086223

     概要を見る

    Silicon carbide (SiC) has excellent properties such as chemical and physical stability, biocompatibility, and high thermal conductivity. However, electrical conductivity of SiC is not high enough for electrochemical applications, which has been a major challenge. Here, in order to improve the conductivity, we prepared boron-doped SiC (SiC:B) and evaluated the electrochemical properties. SiC and SiC:B were fabricated by a microwave plasma chemical vapor deposition method. Structural characterization revealed that the main phase of SiC:B is 3C–SiC where the concentration of doped boron could be controlled by tuning the growth conditions. Electrochemical properties were evaluated by cyclic voltammetry measurements, indicating that the reactivity and sensitivity of the SiC:B electrode was comparable of that of the glassy carbon electrode.

  • Annealing enhancement in stability and performance of copper modified boron-doped diamond (Cu-BDD) electrode for electrochemical nitrate reduction

    Kuang P., Natsui K., Einaga Y., Feng C., Cui Y., Zhang W., Deng Y.

    Diamond and Related Materials (Diamond and Related Materials)  114 2021年04月

    ISSN  09259635

     概要を見る

    Nitrate contamination in groundwater requires efficient remediation to prevent adverse environmental impacts. This study illustrates the improvement in nitrate reduction process using copper modified BDD (Cu-BDD) with higher stability after annealing treatment. The highest values for nitrate reduction and the selectivity of nitrogen gas were about 71% and 45%, respectively, which were obtained using annealed Cu-BDD electrode. Annealing process promoted the homogeneity of copper oxides that consolidated the electrodeposited copper oxides on the surface of Cu-BDD to enhance the stability of electrode. Meanwhile, annealed Cu-BDD exhibited higher conductivity to facilitate nitrate reduction initiating at a more positive potential. Furthermore, cuprous ions and metallic Cu were formed during the annealing treatment, and had active chemical reaction with nitrate and excellent catalytic capability for the reaction, which efficiently enhanced either the nitrate reduction efficiency or the selectivity of nitrogen gas. The findings advance the current understanding on the enhancement of electrochemical stability and nitrate reduction performance using Cu-BDD after the annealing treatment, and also offer a promising technology for remediation of nitrate-contaminated groundwater.

  • Nickel hydroxide nanoparticles for application in immunochromatographic strip tests of melamine

    Saepudin E., Yuliani T., Musyarofah N.R.R., Nasution M.A.F., Gunlazuardi J., Einaga Y., Ivandini T.A.

    Sensors and Materials (Sensors and Materials)  33 ( 3-2 ) 1027 - 1036 2021年03月

    ISSN  09144935

     概要を見る

    Nickel hydroxide nanoparticles [Ni(OH)2-NPs] synthesized by a complexation-precipitation method under hydrothermal conditions were employed as a probe in immunochromatographic strip tests for the selective detection of melamine. The characterization of Ni(OH) -NPs and their conjugation to anti-melamine antibody (anti-MEL) were performed using a UV- visible spectrophotometer, Fourier transform infrared (FTIR) spectroscopy, and TEM. On the basis of the green line intensity, the strip test can selectively detect melamine at a minimum concentration of 25 ppm. Our results suggest that this system is promising for the quantitative detection of melamine. 2

  • Nanodiamonds Inhibit Cancer Cell Migration by Strengthening Cell Adhesion: Implications for Cancer Treatment

    Guo Q., Li L., Gao G., Liu R., Einaga Y., Zhi J.

    ACS Applied Materials and Interfaces (ACS Applied Materials and Interfaces)  13 ( 8 ) 9620 - 9629 2021年03月

    ISSN  19448244

     概要を見る

    Nanodiamonds (NDs) are a type of biocompatible nanomaterial with easily modified surfaces and are considered as promising candidates in biomedicine. In this work, the inhibition of tumor cell migration by carboxylated nanodiamonds (cNDs) was investigated. AFM-based single cell adhesion and F-actin staining experiments demonstrated that cNDs treatment could enhance cell adhesion and impair assembly of the cytoskeleton. The mechanism analysis of the regulatory protein expression level also proved that cNDs could inhibit the migration of Hela cells by preventing the epithelial-mesenchymal transition (EMT) process through the transforming growth factor β (TGF-β) signaling pathway. The in vivo pulmonary metastasis model also showed that cNDs effectively reduced the metastasis of murine B16 melanoma cells. In summary, cNDs have been demonstrated to inhibit cancer cell migration in vitro and decrease tumor metastasis in vivo. Therefore, cNDs might have potential utility for specific cancer treatment.

  • Electrogenerated Chemiluminescence of Luminol Mediated by Carbonate Electrochemical Oxidation at a Boron-Doped Diamond

    Irkham , Rais R.R., Ivandini T.A., Fiorani A., Einaga Y.

    Analytical Chemistry (Analytical Chemistry)  93 ( 4 ) 2336 - 2341 2021年02月

    ISSN  00032700

     概要を見る

    The electrogenerated chemiluminescence of luminol is a process by which light generation is triggered by adding hydrogen peroxide and then applying a suitable electrode potential. Here, we take this phenomenon one step forward by avoiding the addition of hydrogen peroxide using a smart combination of a boron-doped diamond electrode and a carbonate electrolyte to generate the hydrogen peroxide directly in situ. The reaction occurs because of the carbonate electrochemical oxidation to peroxydicarbonate and the following hydrolysis to hydrogen peroxide, which triggers the emission from luminol. The electrogenerated chemiluminescence emission has been optimized by an investigation of the applied potentials, the carbonate concentration, and the pH. Furthermore, these results have been used to shine a light on the reaction mechanisms. Because this method does not require the addition of hydrogen peroxide, it might find application in efforts to avoid instability of hydrogen peroxide or its interference with the analytes of interest.

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KOARA(リポジトリ)収録論文等 【 表示 / 非表示

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総説・解説等 【 表示 / 非表示

競争的資金等の研究課題 【 表示 / 非表示

  • 革新的sp3機能電極材料の創製

    2019年04月
    -
    2022年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 栄長 泰明, 基盤研究(A), 補助金,  代表

  • 光制御可能な超伝導ナノ微粒子の創製

    2016年04月
    -
    2019年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 栄長 泰明, 基盤研究(B), 補助金,  代表

 

担当授業科目 【 表示 / 非表示

  • 化学輪講

    2021年度

  • ナノスケール科学ジョイントセミナー

    2021年度

  • マテリアルデザイン科学ジョイントセミナー

    2021年度

  • 化学実験第1

    2021年度

  • 基礎化学実験

    2021年度

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