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Takahiko Kojima - Publications

Affiliations: 
University of Tsukuba, 1-1-1 Tsukuba, Ibaraki-ken, Japan 
Area:
Bioinspired Redox Chemistry
Website:
https://trios.tsukuba.ac.jp/en/researcher/0000000649
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41 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2023 Ishizuka T, Kogawa T, Ogawa C, Kotani H, Shiota Y, Yoshizawa K, Kojima T. Enhancement of Reactivity of a Ru-Oxo Complex in Oxygen-Atom-Transfer Catalysis by Hydrogen-Bonding with Amide Moieties in the Second Coordination Sphere. Jacs Au. 3: 2813-2825. PMID 37885582 DOI: 10.1021/jacsau.3c00377  0.43
2020 Sawaki T, Ishizuka T, Namura N, Hong D, Miyanishi M, Shiota Y, Kotani H, Yoshizawa K, Jung J, Fukuzumi S, Kojima T. Photocatalytic hydrogen evolution using a Ru(II)-bound heteroaromatic ligand as a reactive site. Dalton Transactions (Cambridge, England : 2003). PMID 33210674 DOI: 10.1039/d0dt03546g  0.32
2019 Hong D, Ohgomori Y, Shimoyama Y, Kotani H, Ishizuka T, Kon Y, Kojima T. Mechanistic Insight into Synergistic Catalysis of Olefin Hydrogenation by a Hetero-Dinuclear Ru-Co Complex with Adjacent Reaction Sites. Inorganic Chemistry. PMID 31398017 DOI: 10.1021/acs.inorgchem.9b02104  0.327
2019 Suzuki W, Kotani H, Ishizuka T, Kojima T. Dioxygen/Hydrogen Peroxide Interconversion Using Redox Couples of Saddle-Distorted Porphyrins and Isophlorins. Journal of the American Chemical Society. 141: 5987-5994. PMID 30882221 DOI: 10.1021/jacs.9b01038  0.301
2019 Kojima T, Amano T, Ishii Y, Ohba M, Okaue Y, Matsuda Y. Synthesis and Characterization of Mononuclear and Dinuclear Ruthenium Complexes with Tris(2-pyridylmethyl)amine and Tris(5-methyl-2-pyridylmethyl)amine. Inorganic Chemistry. 37: 4076-4085. PMID 11670527 DOI: 10.1021/IC971049H  0.341
2019 Suzuki W, Kotani H, Ishizuka T, Kawano M, Sakai H, Hasobe T, Ohkubo K, Fukuzumi S, Kojima T. A Diprotonated Porphyrin as an Electron Mediator in Photoinduced Electron Transfer in Hydrogen-Bonded Supramolecular Assemblies Journal of Physical Chemistry C. 123: 11529-11538. DOI: 10.1021/Acs.Jpcc.9B02449  0.472
2018 Saegusa Y, Ishizuka T, Kojima T. Substituent Effects at the β-Positions of the Nonfused Pyrroles in a Quadruply Fused Porphyrin on the Structure and Optical and Electrochemical Properties. Inorganic Chemistry. PMID 29360352 DOI: 10.1021/acs.inorgchem.7b02551  0.301
2017 Suzuki W, Kotani H, Ishizuka T, Shiota Y, Yoshizawa K, Kojima T. Formation of supramolecular hetero-triads by controlling the hydrogen bonding of conjugate bases with a diprotonated porphyrin based on electrostatic interaction. Chemical Communications (Cambridge, England). PMID 28555238 DOI: 10.1039/c7cc03635c  0.364
2016 Mitome H, Ishizuka T, Kotani H, Shiota Y, Yoshizawa K, Kojima T. Mechanistic Insights into C-H Oxidations by Ruthenium(III)-Pterin Complexes: Impact of Basicity of the Pterin Ligand and Electron Acceptability of the Metal Center on the Transition States. Journal of the American Chemical Society. 138: 9508-20. PMID 27403587 DOI: 10.1021/jacs.6b03785  0.335
2014 Ohzu S, Ishizuka T, Kotani H, Kojima T. Reactivity of a Ru(III)-hydroxo complex in substrate oxidation in water. Chemical Communications (Cambridge, England). 50: 15018-21. PMID 25327214 DOI: 10.1039/c4cc07488b  0.355
2014 Ishizuka T, Ohzu S, Kotani H, Shiota Y, Yoshizawa K, Kojima T. Hydrogen atom abstraction reactions independent of C-H bond dissociation energies of organic substrates in water: Significance of oxidant-substrate adduct formation Chemical Science. 5: 1429-1436. DOI: 10.1039/c3sc53002g  0.308
2013 Ishizuka T, Sankar M, Kojima T. Control of the spatial arrangements of supramolecular networks based on saddle-distorted porphyrins by intermolecular hydrogen bonding. Dalton Transactions (Cambridge, England : 2003). 42: 16073-9. PMID 23969510 DOI: 10.1039/c3dt51467f  0.598
2013 Makino M, Ishizuka T, Ohzu S, Hua J, Kotani H, Kojima T. Synthesis and characterization of an azido-bridged dinuclear ruthenium(II) polypyridylamine complex forming a mixed-valence state. Inorganic Chemistry. 52: 5507-14. PMID 23607882 DOI: 10.1021/ic400412f  0.347
2013 Inui Y, Shiro M, Fukuzumi S, Kojima T. Quartet formation of a guanine derivative with an isopropyl group: crystal structures of "naked" G-quartets and thermodynamics of G-quartet formation. Organic & Biomolecular Chemistry. 11: 758-64. PMID 23238354 DOI: 10.1039/C2Ob26877A  0.33
2012 Ishizuka T, Sankar M, Yamada Y, Fukuzumi S, Kojima T. Porphyrin nanochannels reinforced by hydrogen bonding. Chemical Communications (Cambridge, England). 48: 6481-3. PMID 22582178 DOI: 10.1039/C2Cc31142A  0.569
2012 Yokoyama A, Ohkubo K, Ishizuka T, Kojima T, Fukuzumi S. Remarkable enhancement of catalytic activity of a 2 : 1 complex between a non-planar Mo(v)-porphyrin and a ruthenium-substituted Keggin-type heteropolyoxometalate in catalytic oxidation of benzyl alcohols. Dalton Transactions (Cambridge, England : 2003). 41: 10006-13. PMID 22562148 DOI: 10.1039/C2Dt30424D  0.313
2012 Inui Y, Miyazaki S, Ohkubo K, Fukuzumi S, Kojima T. Regulation of redox potential of a pterin derivative bound to a ruthenium(II) complex by intermolecular hydrogen bonding with nucleobases. Angewandte Chemie (International Ed. in English). 51: 4623-7. PMID 22473682 DOI: 10.1002/Anie.201108827  0.496
2012 Fukuzumi S, Honda T, Kojima T. Structures and photoinduced electron transfer of protonated complexes of porphyrins and metallophthalocyanines Coordination Chemistry Reviews. 256: 2488-2502. DOI: 10.1016/J.Ccr.2012.01.011  0.311
2011 Ishizuka T, Tobita K, Yano Y, Shiota Y, Yoshizawa K, Fukuzumi S, Kojima T. Proton-coupled electron shuttling in a covalently linked ruthenium-copper heterodinuclear complex. Journal of the American Chemical Society. 133: 18570-3. PMID 22017339 DOI: 10.1021/Ja208141B  0.361
2011 Kojima T, Nakayama K, Ikemura K, Ogura T, Fukuzumi S. Formation of a ruthenium(IV)-oxo complex by electron-transfer oxidation of a coordinatively saturated ruthenium(II) complex and detection of oxygen-rebound intermediates in C-H bond oxygenation. Journal of the American Chemical Society. 133: 11692-700. PMID 21696162 DOI: 10.1021/Ja2037645  0.347
2011 Honda T, Kojima T, Fukuzumi S. Control of electron-transfer reduction by protonation of zinc octabutoxyphthalocyanine assisted by intramolecular hydrogen bonding. Chemical Communications (Cambridge, England). 47: 7986-8. PMID 21681320 DOI: 10.1039/C1Cc12710A  0.382
2011 Shiota Y, Herrera JM, Juhász G, Abe T, Ohzu S, Ishizuka T, Kojima T, Yoshizawa K. Theoretical study of oxidation of cyclohexane diol to adipic anhydride by [Ru(IV)(O)(tpa)(H2O)]2+ complex (tpa ═ tris(2-pyridylmethyl)amine). Inorganic Chemistry. 50: 6200-9. PMID 21634386 DOI: 10.1021/ic200481n  0.345
2011 Yokoyama A, Kojima T, Fukuzumi S. Enclosure of a Keggin-type heteropolyoxometalate into a tubular π-space via hydrogen bonds with a nonplanar Mo(V)-porphyrin complex forming a supramolecular assembly. Dalton Transactions (Cambridge, England : 2003). 40: 6445-50. PMID 21566819 DOI: 10.1039/C0Dt01708F  0.39
2011 Ishizuka T, Sawaki T, Miyazaki S, Kawano M, Shiota Y, Yoshizawa K, Fukuzumi S, Kojima T. Mechanistic insights into photochromic behavior of a ruthenium(II)-pterin complex. Chemistry (Weinheim An Der Bergstrasse, Germany). 17: 6652-62. PMID 21542034 DOI: 10.1002/Chem.201003522  0.304
2011 Sankar M, Ishizuka T, Wang Z, Ma T, Shiro M, Kojima T. Synthesis, structure and physicochemical properties of a saddle-distorted porphyrin with a peripheral carboxyl group Journal of Porphyrins and Phthalocyanines. 15: 421-432. DOI: 10.1142/S1088424611003379  0.582
2011 Yano Y, Kojima T, Fukuzumi S. Cooperative catalysis of a trinuclear ruthenium(II) complex in transfer hydrogenation of ketones by formic acid Inorganica Chimica Acta. 374: 104-111. DOI: 10.1016/J.Ica.2011.01.100  0.374
2010 Yokoyama A, Kojima T, Ohkubo K, Fukuzumi S. Crystal structures and solution properties of discrete complexes composed of saddle-distorted molybdenum(v)-dodecaphenylporphyrins and keggin-type heteropolyoxometalates linked by direct coordination. Inorganic Chemistry. 49: 11190-8. PMID 21067227 DOI: 10.1021/Ic1019586  0.311
2010 Honda T, Nakanishi T, Ohkubo K, Kojima T, Fukuzumi S. Structure and photoinduced electron transfer dynamics of a series of hydrogen-bonded supramolecular complexes composed of electron donors and a saddle-distorted diprotonated porphyrin. Journal of the American Chemical Society. 132: 10155-63. PMID 20597512 DOI: 10.1021/Ja103889F  0.365
2010 Kojima T, Hirasa N, Noguchi D, Ishizuka T, Miyazaki S, Shiota Y, Yoshizawa K, Fukuzumi S. Synthesis and characterization of ruthenium(II)-pyridylamine complexes with catechol pendants as metal binding sites. Inorganic Chemistry. 49: 3737-45. PMID 20329711 DOI: 10.1021/Ic902070Q  0.363
2009 Kojima T, Inui Y, Miyazaki S, Shiro M, Fukuzumi S. A tetranuclear iridium(iii) complex with a flavin analogue as a bridging ligand in different coordination modes and exchangeable anion encapsulation in a supramolecular cage. Chemical Communications (Cambridge, England). 6643-5. PMID 19865677 DOI: 10.1039/B911033J  0.397
2009 Miyazaki S, Kojima T, Mayer JM, Fukuzumi S. Proton-coupled electron transfer of ruthenium(III)-pterin complexes: a mechanistic insight. Journal of the American Chemical Society. 131: 11615-24. PMID 19722655 DOI: 10.1021/Ja904386R  0.441
2009 Fukuzumi S, Honda T, Ohkubo K, Kojima T. Charge separation in metallomacrocycle complexes linked with electron acceptors by axial coordination. Dalton Transactions (Cambridge, England : 2003). 3880-9. PMID 19440585 DOI: 10.1039/B901191A  0.422
2009 Kojima T, Nakanishi T, Honda T, Fukuzumi S. Photoinduced electron transfer in supramolecular assemblies involving saddle-distorted porphyrins and phthalocyanines Journal of Porphyrins and Phthalocyanines. 13: 14-21. DOI: 10.1142/S1088424609000164  0.356
2009 Kojima T, Nakanishi T, Honda T, Harada R, Shiro M, Fukuzumi S. Impact of Distortion of Porphyrins on Axial Coordination in (Porphyrinato)zinc(II) Complexes with Aminopyridines as Axial Ligands European Journal of Inorganic Chemistry. 2009: 727-734. DOI: 10.1002/Ejic.200801040  0.326
2008 Kojima T, Honda T, Ohkubo K, Shiro M, Kusukawa T, Fukuda T, Kobayashi N, Fukuzumi S. A discrete supramolecular conglomerate composed of two saddle-distorted zinc(II)-phthalocyanine complexes and a doubly protonated porphyrin with saddle distortion undergoing efficient photoinduced electron transfer. Angewandte Chemie (International Ed. in English). 47: 6712-6. PMID 18655209 DOI: 10.1002/Anie.200802601  0.333
2008 Fukuzumi S, Kojima T. Control of redox reactivity of flavin and pterin coenzymes by metal ion coordination and hydrogen bonding Journal of Biological Inorganic Chemistry. 13: 321-333. PMID 18270755 DOI: 10.1007/S00775-008-0343-1  0.458
2008 Miyazaki S, Kojima T, Sakamoto T, Matsumoto T, Ohkubo K, Fukuzumi S. Proton-coupled electron transfer in ruthenium(II)-pterin complexes: formation of ruthenium-coordinated pterin radicals and their electronic structures. Inorganic Chemistry. 47: 333-343. PMID 18047328 DOI: 10.1021/Ic701759C  0.371
2007 Kojima T, Hayashi K, Iizuka SY, Tani F, Naruta Y, Kawano M, Ohashi Y, Hirai Y, Ohkubo K, Matsuda Y, Fukuzumi S. Synthesis and characterization of mononuclear ruthenium(III) pyridylamine complexes and mechanistic insights into their catalytic alkane functionalization with m-chloroperbenzoic acid. Chemistry (Weinheim An Der Bergstrasse, Germany). 13: 8212-22. PMID 17625799 DOI: 10.1002/Chem.200700190  0.338
2005 Kojima T, Matsuda Y. A Novel Ru(II)–DMSO Complex Having Non-coordinating 1-Naphthoylamide Arm: Effects of Intramolecular Hydrogen Bonding on Redox Potential of the Ruthenium Center Chemistry Letters. 34: 258-259. DOI: 10.1246/CL.2005.258  0.504
2004 Kojima T, Hayashi K, Matsuda Y. Structures and properties of ruthenium(II) complexes of pyridylamine ligands with oxygen-bound amide moieties: regulation of structures and proton-coupled electron transfer. Inorganic Chemistry. 43: 6793-804. PMID 15476380 DOI: 10.1021/IC0495665  0.452
2003 Kojima T, Kitaguchi H, Tachi Y, Naruta Y, Matsuda Y. Molecular Recognition by a Cu(II)-2,2′-bipyridine Complex Involving Coordination and Hydrogen Bonding Chemistry Letters. 32: 1172-1173. DOI: 10.1246/CL.2003.1172  0.441
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