• 5179 Citations
  • 40 h-Index
1991 …2020

Research output per year

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Research Output

  • 5179 Citations
  • 40 h-Index
  • 123 Article
  • 4 Review article
  • 1 Chapter
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Article
2020

Aluminum porphyrins with quaternary ammonium halides as catalysts for copolymerization of cyclohexene oxide and CO2: metal-ligand cooperative catalysis

Deng, J., Ratanasak, M., Sako, Y., Tokuda, H., Maeda, C., Hasegawa, J. Y., Nozaki, K. & Ema, T., Jun 14 2020, In : Chemical Science. 11, 22, p. 5669-5675 7 p.

Research output: Contribution to journalArticle

Open Access

Azahelicene-Fused BODIPY Analogues Showing Circularly Polarized Luminescence

Maeda, C., Nagahata, K., Shirakawa, T. & Ema, T., May 11 2020, In : Angewandte Chemie - International Edition. 59, 20, p. 7813-7817 5 p.

Research output: Contribution to journalArticle

Open Access
6 Citations (Scopus)

Synthesis and Chiroptical Properties of Chiral Carbazole-Based BODIPYs

Maeda, C., Suka, K., Nagahata, K., Takaishi, K. & Ema, T., Apr 1 2020, In : Chemistry - A European Journal. 26, 19, p. 4261-4268 8 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Synthesis of silyl formates, formamides, and aldehydesviasolvent-free organocatalytic hydrosilylation of CO2

Murata, T., Hiyoshi, M., Ratanasak, M., Hasegawa, J. Y. & Ema, T., May 28 2020, In : Chemical Communications. 56, 43, p. 5783-5786 4 p.

Research output: Contribution to journalArticle

2019

Axially Chiral peri-Xanthenoxanthenes as a Circularly Polarized Luminophore

Takaishi, K., Hinoide, S., Matsumoto, T. & Ema, T., Jul 31 2019, In : Journal of the American Chemical Society. 141, 30, p. 11852-11857 6 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Chiral Bifunctional Metalloporphyrin Catalysts for Kinetic Resolution of Epoxides with Carbon Dioxide

Maeda, C., Mitsuzane, M. & Ema, T., Mar 15 2019, In : Organic Letters. 21, 6, p. 1853-1856 4 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Chiroptical and catalytic properties of doubly binaphthyl-strapped chiral porphyrins

Maeda, C., Ogawa, K., Sadanaga, K., Takaishi, K. & Ema, T., Jan 1 2019, In : Chemical Communications. 55, 8, p. 1064-1067 4 p.

Research output: Contribution to journalArticle

13 Citations (Scopus)
20 Citations (Scopus)

Hemisquaramide Tweezers as Organocatalysts: Synthesis of Cyclic Carbonates from Epoxides and CO 2

Takaishi, K., Okuyama, T., Kadosaki, S., Uchiyama, M. & Ema, T., Mar 1 2019, In : Organic Letters. 21, 5, p. 1397-1401 5 p.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Synthesis and electronic properties of π-expanded carbazole-based porphyrins

Maeda, C., Tanaka, Y., Shirakawa, T. & Ema, T., Jan 1 2019, In : Chemical Communications. 55, 68, p. 10162-10165 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Synthesis of chiral carbazole-based BODIPYs showing circularly polarized luminescence

Maeda, C., Nagahata, K., Takaishi, K. & Ema, T., Jan 1 2019, In : Chemical Communications. 55, 21, p. 3136-3139 4 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Unexpected Macrocyclic Multinuclear Zinc and Nickel Complexes that Function as Multitasking Catalysts for CO2 Fixations

Takaishi, K., Nath, B. D., Yamada, Y., Kosugi, H. & Ema, T., Jul 15 2019, In : Angewandte Chemie - International Edition. 58, 29, p. 9984-9988 5 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2018

Binaphthyl-Bipyridyl cyclic dyads as a chiroptical switch

Takaishi, K., Yasui, M. & Ema, T., Apr 25 2018, In : Journal of the American Chemical Society. 140, 16, p. 5334-5338 5 p.

Research output: Contribution to journalArticle

41 Citations (Scopus)
17 Citations (Scopus)

Cross-Coupling Approach to an Array of Macrocyclic Receptors Functioning as Chiral Solvating Agents

Ema, T., Yamasaki, T., Watanabe, S., Hiyoshi, M. & Takaishi, K., Jan 1 2018, (Accepted/In press) In : Journal of Organic Chemistry.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Intense excimer CPL of pyrenes linked to a quaternaphthyl

Takaishi, K., Takehana, R. & Ema, T., Jan 1 2018, In : Chemical Communications. 54, 12, p. 1449-1452 4 p.

Research output: Contribution to journalArticle

29 Citations (Scopus)
2017
11 Citations (Scopus)

Chiral Macrocyclic Organocatalysts for Kinetic Resolution of Disubstituted Epoxides with Carbon Dioxide

Ema, T., Yokoyama, M., Watanabe, S., Sasaki, S., Ota, H. & Takaishi, K., Aug 4 2017, In : Organic Letters. 19, 15, p. 4070-4073 4 p.

Research output: Contribution to journalArticle

22 Citations (Scopus)

Electronic Tuning of Zinc Porphyrin Catalysts for the Conversion of Epoxides and Carbon Dioxide into Cyclic Carbonates

Maeda, C., Sasaki, S. & Ema, T., Mar 20 2017, In : ChemCatChem. 9, 6, p. 946-949 4 p.

Research output: Contribution to journalArticle

26 Citations (Scopus)

Helical Oligonaphthodioxepins Showing Intense Circularly Polarized Luminescence (CPL) in Solution and in the Solid State

Takaishi, K., Yamamoto, T., Hinoide, S. & Ema, T., Jul 12 2017, In : Chemistry - A European Journal. 23, 39, p. 9249-9252 4 p.

Research output: Contribution to journalArticle

30 Citations (Scopus)

Magnetic Attachment of Lipase Immobilized on Bacteriogenic Iron Oxide Inside a Microtube Reactor for the Kinetic Resolution of Secondary Alcohols

Mandai, K., Fukuda, T., Miyazaki, Y., Hashimoto, H., Mandai, H., Ema, T., Takada, J. & Suga, S., Apr 21 2017, In : Synlett. 28, 7, p. 805-810 6 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)
1 Citation (Scopus)
3 Citations (Scopus)

Spectroscopic Discrimination of Diastereomeric Complexes Involving an Axially Chiral Receptor

Filippi, A., Fraschetti, C., Guarcini, L., Zazza, C., Ema, T. & Speranza, M., Sep 20 2017, In : ChemPhysChem. 18, 18, p. 2475-2481 7 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Synthesis of carbazole-based BODIPY dimers showing red fluorescence in the solid state

Maeda, C., Todaka, T., Ueda, T. & Ema, T., Jan 1 2017, In : Organic and Biomolecular Chemistry. 15, 44, p. 9283-9287 5 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

Synthetically useful variants of industrial lipases from: Burkholderia cepacia and Pseudomonas fluorescens

Yoshida, K., Ono, M., Yamamoto, T., Utsumi, T., Koikeda, S. & Ema, T., 2017, In : Organic and Biomolecular Chemistry. 15, 41, p. 8713-8719 7 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2016

Color-Tunable Solid-State Fluorescence Emission from Carbazole-Based BODIPYs

Maeda, C., Todaka, T., Ueda, T. & Ema, T., May 23 2016, In : Chemistry - A European Journal. 22, 22, p. 7508-7513 6 p.

Research output: Contribution to journalArticle

25 Citations (Scopus)

Determination of enantiomeric excess of carboxylates by fluorescent macrocyclic sensors

Akdeniz, A., Minami, T., Watanabe, S., Yokoyama, M., Ema, T. & Anzenbacher, P., Mar 1 2016, In : Chemical Science. 7, 3, p. 2016-2022 7 p.

Research output: Contribution to journalArticle

42 Citations (Scopus)

Highly Active and Robust Metalloporphyrin Catalysts for the Synthesis of Cyclic Carbonates from a Broad Range of Epoxides and Carbon Dioxide

Maeda, C., Shimonishi, J., Miyazaki, R., Hasegawa, J. Y. & Ema, T., 2016, (Accepted/In press) In : Chemistry - A European Journal.

Research output: Contribution to journalArticle

95 Citations (Scopus)

Intramolecular Electronic Coupling in the Thiophene-Bridged Carbazole-Based Diporphyrin

Maeda, C., Takata, M., Honsho, A. & Ema, T., Dec 2 2016, In : Organic Letters. 18, 23, p. 6070-6073 4 p.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Solvent-Free Benzoin and Stetter Reactions with a Small Amount of NHC Catalyst in the Liquid or Semisolid State

Ema, T., Nanjo, Y., Shiratori, S., Terao, Y. & Kimura, R., Nov 4 2016, In : Organic Letters. 18, 21, p. 5764-5767 4 p.

Research output: Contribution to journalArticle

21 Citations (Scopus)

Theoretical Study on Highly Active Bifunctional Metalloporphyrin Catalysts for the Coupling Reaction of Epoxides with Carbon Dioxide

Hasegawa, J. Y., Miyazaki, R., Maeda, C. & Ema, T., 2016, (Accepted/In press) In : Chemical Record.

Research output: Contribution to journalArticle

16 Citations (Scopus)
2015
166 Citations (Scopus)

Carbazole-Based Boron Dipyrromethenes (BODIPYs): Facile Synthesis, Structures, and Fine-Tunable Optical Properties

Maeda, C., Todaka, T. & Ema, T., Jun 19 2015, In : Organic Letters. 17, 12, p. 3090-3093 4 p.

Research output: Contribution to journalArticle

33 Citations (Scopus)

Chemical modification of lipase for rational enhancement of enantioselectivity

Ema, T. & Inoue, H., Jan 1 2015, In : Chemistry Letters. 44, 10, p. 1374-1376 3 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Quaternary ammonium hydroxide as a metal-free and halogen-free catalyst for the synthesis of cyclic carbonates from epoxides and carbon dioxide

Ema, T., Fukuhara, K., Sakai, T., Ohbo, M., Bai, F. Q. & Hasegawa, J. Y., Apr 1 2015, In : Catalysis Science and Technology. 5, 4, p. 2314-2321 8 p.

Research output: Contribution to journalArticle

75 Citations (Scopus)
2014

Bifunctional porphyrin catalysts for the synthesis of cyclic carbonates from epoxides and CO2: Structural optimization and mechanistic study

Ema, T., Miyazaki, Y., Shimonishi, J., Maeda, C. & Hasegawa, J. Y., Oct 29 2014, In : Journal of the American Chemical Society. 136, 43, p. 15270-15279 10 p.

Research output: Contribution to journalArticle

245 Citations (Scopus)

Selective anion sensing by chiral macrocyclic receptors with multiple hydrogen-bonding sites

Ema, T., Okuda, K., Watanabe, S., Yamasaki, T., Minami, T., Esipenko, N. A. & Anzenbacher, P., Mar 7 2014, In : Organic Letters. 16, 5, p. 1302-1305 4 p.

Research output: Contribution to journalArticle

40 Citations (Scopus)

Synergistic effect of quaternary ammonium hydroxide and crown ether on the rapid and clear dissolution of cellulose at room temperature

Ema, T., Komiyama, T., Sunami, S. & Sakai, T., Jan 1 2014, In : RSC Advances. 4, 5, p. 2523-2525 3 p.

Research output: Contribution to journalArticle

26 Citations (Scopus)
2013

Multifunctional macrocyclic receptors as templates for aromatic amino acids: A rare example of a highly selective multi-input multi-output chemo-"Logic Gate"

Fraschetti, C., Filippi, A., Crestoni, M. E., Ema, T. & Speranza, M., Sep 1 2013, In : ChemPlusChem. 78, 9, p. 979-987 9 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Robust porphyrin catalysts immobilized on biogenous iron oxide for the repetitive conversions of epoxides and CO2 into cyclic carbonates

Ema, T., Miyazaki, Y., Taniguchi, T. & Takada, J., Sep 1 2013, In : Green Chemistry. 15, 9, p. 2485-2492 8 p.

Research output: Contribution to journalArticle

74 Citations (Scopus)

Unexpected behavior of diastereomeric ions in the GasPhase: A stimulus for pondering on ee measurements by ESI-MS

Fraschetti, C., Filippi, A., Crestoni, M. E., Ema, T. & Speranza, M., Apr 1 2013, In : Journal of the American Society for Mass Spectrometry. 24, 4, p. 573-578 6 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)
2012

A bifunctional catalyst for carbon dioxide fixation: Cooperative double activation of epoxides for the synthesis of cyclic carbonates

Ema, T., Miyazaki, Y., Koyama, S., Yano, Y. & Sakai, T., Apr 9 2012, In : Chemical Communications. 48, 37, p. 4489-4491 3 p.

Research output: Contribution to journalArticle

202 Citations (Scopus)

Biogenous iron oxide-immobilized palladium catalyst for the solvent-free Suzuki-Miyaura coupling reaction

Mandai, K., Korenaga, T., Ema, T., Sakai, T., Furutani, M., Hashimoto, H. & Takada, J., Jan 18 2012, In : Tetrahedron Letters. 53, 3, p. 329-332 4 p.

Research output: Contribution to journalArticle

48 Citations (Scopus)

Construction of contiguous tetrasubstituted carbon stereocenters by intramolecular crossed benzoin reactions catalyzed by N-heterocyclic carbene (NHC) organocatalyst

Ema, T., Akihara, K., Obayashi, R. & Sakai, T., Nov 26 2012, In : Advanced Synthesis and Catalysis. 354, 17, p. 3283-3290 8 p.

Research output: Contribution to journalArticle

34 Citations (Scopus)