研究者詳細 - 山田　泰之

論文 - 山田　泰之

分割表示 81 件中 61 - 80 件目／全件表示 >>

Synthesis of a Hetero-Dinuclear Metal Complex in a Porphyrin/Phthalocyanine Four-Fold Rotaxane 招待有り査読有り

Yasuyuki Yamada, Nozomi Mihara, Kentaro Tanaka

Dalton Transactions 42 巻 ( 45 ) 頁： 15873-15876 2013年

Triply Stacked Heterogeneous Array of Porphyrins and Phthalocyanine through Stepwise Formation of a Fourfold Rotaxane and an Ionic Complex 査読有り

Yasuyuki Yamada, Nozomi MIhara, Shinya Shibano, Kunihisa Sugimoto, Kentaro Tanaka

Journal of the American Chemical Society 135 巻 ( 31 ) 頁： 11505-11508 2013年

pi-pi スタッキング相互作用と金属錯体形成が織りなす分子機能のハーモニー招待有り査読有り

山田　泰之、田中　健太郎

錯体化学会誌 62 巻頁： 12 - 28 2013年

Programmed arraying of metal complexes in a supramolecular system: Stacked assembly of porphyrin and phthalocyanine 招待有り

Tanaka, K.; Yamada, Y.

Spring-8 Research Frontiers 頁： 68 - 69 2013年

Room-Temperature Single Molecular Memory 査読有り

Shinya Kano, Yasuyuki Yamada, Kentaro Tanaka, Yutaka Majima

Applied Physics Letters 100 巻 ( 5 ) 頁： 053101 2012年1月

記述言語：英語掲載種別：研究論文（学術雑誌）

Single molecular memory operation was observed on a porphyrin derivative by scanning tunneling microscopy at room temperature. A porphyrin derivative with four disulfide groups was chemically synthesized and chemisorbed on a Au(111) surface. Coulomb blockade behaviors and switching behaviors in current-voltage (I-V) characteristics were observed on a single porphyrin derivative by scanning tunneling spectroscopy. Based on the switching behaviors, the memory operation of electrical conductance in the porphyrin derivative was demonstrated by applying a programmed pulse sequence with an on/off ratio of 2.9 at room temperature.

DOI： 10.1063/1.3679127

Switchable Intermolecular Communication in a Four-Fold Rotaxane 査読有り

Yasuyuki Yamada, Mitsuhiro Okamoto, Ko Furukawa, Tatsuhisa Kato, Kentaro Tanaka

Angew. Chem. Int. Ed. 51 巻 ( 3 ) 頁： 709–713 2012年

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

A four-fold rotaxane was prepared from tetradactyl porphyrin with four alkyl ammonium chains and phthalocyanine with four peripheral crown ethers. In a dinuclear Cu2+ complex of the four-fold rotaxane, switchable spin-spin communication was observed between the Cu2+-porphyrin and the Cu2+-phthalocyanine.

DOI： 10.1002/anie.201107104

Design and Synthesis of a Fluorescent Probe for Zn2þ,5,7-Bis(N,N-dimethylaminosulfonyl)-8-hydroxyquinoline-Pendant1,4,7,10-Tetraazacyclododecane and Zn2þ-Dependent Hydrolytic andZn2þ-Independent Photochemical Reactivation of Its Benzenesulfonyl-CagedDerivative 査読有り

Ryosuke Ohshima, Masanori Kitamura, Akinori Morita, Motoo Shiro,Yasuyuki Yamada, Masahiko Ikekita,Eiichi Kimura, and Shin Aoki

Inorganic Chemistry 49 巻頁： 888-899 2010年2月

Photochemical Cleavage Reactions of 8-Quinolinyl Sulfonates in AqueousSolution 査読有り

Yoshiyuki KAGEYAMA, Ryosuke OHSHIMA, Kazusa SAKURAMA, Yoshihisa FUJIWARA, Yoshifumi TANIMOTO, Yasuyuki YAMADA, and Shin AOKI

Chemical and Pharmaceutical Bulletin 57 巻 ( 11 ) 頁： 1257-1266 2009年11月

記述言語：英語掲載種別：研究論文（学術雑誌）

Photochemical cleavage reactions of 8-quinolinyl benzenesulfonate derivatives and related sulfonates in
aqueous solutions are reported. The 8-quinolinyl benzenesulfonates undergo photolysis upon photoirradiation at
300―330 nm to give the corresponding 8-quinolinols and benzenesulfonic acids with the production of only negligible
amounts of byproducts. The effects of substituent groups of the 8-quinolinyl moiety and the benzene ring
on the photolysis reactions were examined. Based on steady-state mechanistic studies using a triplet sensitizer, a
triplet quencher, and electron donors, it was suggested that the photolysis proceeds mainly via the homolytic
cleavage of S–O bonds in the excited triplet state.

Chiral Catalysts Dually Functionalized with Amino Acid and Zn2+ ComplexComponents for Enantioselective Direct Aldol Reactions Inspired by NaturalAldolases: Design, Synthesis, Complexation Properties, Catalytic Activities,and Mechanistic Study 査読有り

Susumu Itoh, Masanori Kitamura, Yasuyuki Yamada, and Shin Aoki

Chemistry, A European Journal 15 巻 ( 40 ) 頁： 10570-10584 2009年9月

Design and synthesis of a photocleavable biotin-linker for the photoisolation of ligand–receptor complexes based on the photolysis of 8-quinolinyl sulfonates in aqueous solution 査読有り

Shin Aoki, Nanako Matsuoa, Kengo Hanayaa, Yasuyuki Yamada, Yoshiyuki Kageyama

Bioorganic and Medicinal Chemistry 17 巻 ( 9 ) 頁： 3405–3413 2009年5月

*Photolysis of the Sulfonamide Bond of Metal Complexes of N-Dansyl-1,4,7,10-Tetraazacyclododecane in Aqueous Solution: A Mechanistic Studyand Application to the Photorepair of cis,syn-Cyclobutane ThyminePhotodimer 査読有り

Shin Aoki, Yumiko Tomiyama, Yoshiyuki Kageyama, Yasuyuki Yamada, Motoo Shiro, Eiichi Kimura

Chemistry-An Asian Journal 9 巻 ( 4 ) 頁： 561-573 2009年4月

*BODIPY-Based Fluorescent Redox Potential Sensors that Utilize Reversible Redox Properties of Flavin 査読有り

Yasuyuki Yamada, Yumiko Tomiyama, Akinori Morita, Masahiko Ikekita, and Shin Aoki

ChemBioChem 9 巻頁： 853–856 2008年4月

Design and Synthesis of A Caged Zn2+ Probe, 8-Benzenesulfonyloxy-5-N,N-dimethylaminosulfonylquinolin-2-ylmethyl-pendant 1,4,7,10-Tetraazacyclododecane, and Its Hydrolytic Uncaging upon Complexation with Zn2+ 査読有り

Shin Aoki, Kazusa Sakurama, Ryosuke Ohshima, Nanako Matsuo, Yasuyuki Yamada, Ryoko Takasawa, Sei-ishi Tanuma, and Eiichi Kimura

Inorganic Chemistry 47 巻頁： 2747–2754 2008年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

8-Benzenesulfonyloxy-5-N,N-dimethylaminosulfonylquinolin-2-ylmethyl-pendant cyclen (BS-caged-L4, BS ) benzenesulfonyl)
was designed and synthesized as a “caged" derivative of a previously described Zn2+ fluorophore,
8-hydroxy-5-N,N-dimethylaminosulfonylquinolin-2-ylmethyl-pendant cyclen (L4) (cyclen ) 1,4,7,10-tetraazacyclododecane).
In the absence of metal ions and in the dark, BS-caged-L4 (10 μM) showed negligible fluorescence emission
at pH 7.4 (10 mM HEPES with I ) 0.1 (NaNO3)) and 25 °C (excitation at 328 nm). Addition of Zn2+ induced an
increase in the UV/vis absorption of BS-caged-L4 (10 μM) at 258 nm and a significant increase in fluorescence
emission at 512 nm. These responses are results from the formation of Zn(H-1L4) by the hydrolysis of the sulfonyl
ester at the 8-position of the quinoline unit promoted by the Zn2+-bound HO-. Improvement of cell membrane
permeation in comparison with L4 is also described.

光照射によって進行する二重結合化合物の化学反応

山田　泰之、青木　伸

化学と教育 55 巻 ( 2 ) 頁： 84-87 2007年2月

光照射によって進行する二重結合化合物の化学反応招待有り査読有り

山田　泰之、青木　伸

化学と教育 55 巻頁： 84 - 87 2007年

A New Fluorescent Probe for Zinc(II): An 8-Hydroxy-5-N, N'-dimethylaminosulfonylquinoline-Pentdant 1,4,7,10-Tetraazacyclododecane 査読有り

Shin Aoki, Kazusa Sakurama, Nanako Matsuo, Yasuyuki Yamada, Ryoko Takasawa, Sei-ichi Tanuma, Motoo Shiro, Kei Takeda, Eiichi Kimura

Chemistry - A European Journal 12 巻 ( 35 ) 頁： 9066-9080 2006年12月

*Programmable self-assembly of metal ions inside artificial DNA duplexes 査読有り

Kentaro Tanaka, Guido H. Clever, Yusuke Takezawa, Yasuyuki Yamada, Corinna Kaul, Mitsuhiko Shionoya, Thomas Carell

Nature Nanotechnology 1 巻 ( 3 ) 頁： 190-194 2006年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

The ultimate bottom-up approach for the construction of functional nanosystems requires the precise arrangement of atoms and molecules in three dimensions. DNA is currently one of the most prominent molecules able to self-assemble into complex networks and is therefore regarded as the 'silicon of the nano-world'. Metals and metal ions, in contrast, are the atomic building-blocks needed in such materials to establish functions such as electrical conductivity or magnetism. Here we report a new concept, which efficiently combines metal ions and DNA. The DNA structure is used as a matrix to program robustly the complexation of different metal ions under precise control with regard to element, number and composition.

*Efficient cycloreversion of cis,syn-thymine photodimer by a Zn2+-1,4,7,10-tetraazacyclododecane complex bearing a lumiflavin and tryptophan by chemical reduction and photoreduction of a lumiflavin unit 査読有り

Yasuyuki Yamada, Shin Aoki

Journal of Biological Inorganic Chemistry 11 巻 ( 8 ) 頁： 1007-1023 2006年11月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

DNA photolyases are enzymes that catalyze photoreversion of cis,syn-thymine photodimer (T[c,s]T) by utilizing UV light. In this work, we have designed and synthesized Zn2+-1,4,7,10-tetraazacyclododecane complexes bearing a lumiflavin and l-tryptophan (ZnL3) or l-phenylalanine (ZnL4) as artificial DNA photolyases. We have found that (ZnL3)red, whose flavin unit was reduced in situ by Na2S2O4, accelerates the photoreversion of T[c,s]T utilizing near-UV light in aqueous solution at pH 7.6 and 11. Interestingly, more efficient photoreversion of T[c,s]T was achieved by UV irradiation of an oxidized form of ZnL3 [(ZnL3)ox] in the presence of an excess amount of Et3N at pH 11. UV-vis and fluorescence measurements and action spectra showed that an oxidized form of flavin of (ZnL3)ox was photoreduced by Et3N into its reduced form (ZnL3)red, which promoted the photoreduction of T[c,s]T. Comparison of the photochemical properties of ZnL3 with those of ZnL4 were also described.

Artificial metallo-DNA: structural control and discrete metal assembly 査読有り

Tanaka, K.; Yamada, Y.; Tengeiji, A.; Kato, T.; Toyama, N.; Takezawa, Y.; Yori, M.; Shiro, M.; Shionoya, M.

Nucleic Acids Research Supplement 3 巻頁： 121-122 2003年

*Formation of Silver(I)-Mediated DNA Duplex and Triplex through an Alternative Base Pair of Pyridine Nucleobases 査読有り

Tanaka, K.; Yamada, Y.; Shionoya, M.

Journal of the American Chemical Society 124 巻頁： 8802-8803 2002年

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