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研究内容

研究1 :光機能を有する物質開発(錯体、半導体ナノ結晶)について 

希土類イオンは4f軌道に基づく色純度の高い美しい発光を示すことから、ディスプレイや光学デバイス用材料として近年注目を集めています。この希土類イオンに有機配位子を取りつけた希土類錯体は有機合成によって配位構造と光機能を自由に制御できる特徴を有します。当研究室では、有機合成を駆使した光機能性の希土類錯体を開発しています。また、希土類錯体を化学反応させた新しい半導体ナノ結晶の研究も行っています。

 

キーワード:光化学、錯体化学、有機合成、ナノ材料化学

 

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SELECTED PAPAERS

1) Y. Hasegawa, T. Ohkubo, K. Sogabe, Y. Kawamura, Y. Wada, N. Nakashima and S. Yanagida, Luminescence of novel neodymium sulfonylaminate in organic media
Angew. Chem. Int. Ed. 39, 357 (2000).

2) Y. Hasegawa, S. Thongchant, Y. Wada, H. Tanaka, T. Kawai, T. Sakata, H. Mori and S. Yanagida, Enhaced luminescence and photomagnetic properties of surface-modified EuO nanocrystals
Angew. Chem. Int. Ed. 41, 2073 (2002).

3) Y. Hasegawa, T. Adachi, A. Tanaka, M. Afzaal, P. O'Brien, T. Doi, Y. Hinatsu, K. Fujita, K. Tanaka and T. Kawai, Remarkable magneto-optical properties of europium selenaide nanoparticles with wide energy gap
J. Am. Chem. Soc. 130, 5710 (2008).

4) K. Miyata, T. Nakagawa, R. Kawakami, Y. Kita, K. Sugimoto, T. Nakashima, T. Harada, T. Kawai, Y. Hasegawa, Remarkable luminescence properties of lanthanide complexes with asymmetric dodecahedron structures
Chem. Eur. J. 17, 521 (2011).

5) Y. Hasegawa, M. Maeda, T. Nakanishi, Y. Doi, Y. Hinatsu, K. Fujita, K. Tanaka, H. Koizumi, K. Fushimi, Effective Optical Faraday Rotations of Semiconductor EuS Nanocrystals with Paramagnetic Transition Metal Ions
J. Am. Chem. Soc. 135, 2659-2666 (2013).

6) K. Miyata, Y. Konno, T. Nakanishi, A. Kobayashi, M. Kato, K. Fushimi, Y. Hasegawa, Chameleon Luminophore for Sensing Temperatures: Control of Metal-to-Metal and Energy Back Transfer in Lanthanide Coordination Polymers
Angew. Chem. Int. Ed. 52, 6413-6416 (2013).

7) A. Kawashima, T. Nakanishi, T. Shibayama, S. Watanabe, K. Fujita, K. Tanaka, H. Koizumi, K. Fushimi, Y. Hasegawa, Enhanced Magneto-optical Properties of Semiconductor EuS Nanocrystals Assisted by Surface Plasmon Resonance of Gold Nanoparticles
Chem. Eur. J. 14438-14445 (2013).

8) S. Wada, Y. Kitagawa, T. Nakanishi, K. Fushimi, Y. Morisaki, K. Fujita, K. Konishi, K. Tanaka, Y. Chujo, Y. Hasegawa, The connection between magneto-optical properties and molecular chirality,
NPG Asia Materials, 8, e251 (2016).

9) A. Nakajima, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa, Hyper-stable organo-EuIII luminophore under high temperature for photo-industrial application
Scientific Reports, 6, 24458 (2016).

10)Y. Hirai, T. Nakanishi, Y. Kitagawa, K.i Fushimi, T. Seki, H. Ito, Y. Hasegawa, Luminescent EuIII coordination zippers linked with thiophene-based bridges,
Angew. Chem. Int. Ed. 55, 12059-12062 (2016).

11) S. Omagari, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa, Critical Role of Energy Transfer Between Terbium Ions for Suppression of Back Energy Transfer in Nonanuclear Terbium Clusters,
Scientific Reports, 6, 37008(2016).

12) Y. Hasegawa, S. Tateno, M. Yamamoto, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito and K. Fushimi, Effective Photo- and Triboluminescent EuIII Coordination Polymers with Rigid Triangular Spacer Ligands,
Chem. Eur. J. 23, 2666-2672(2017).

13) Y. Hirai, T. Nakanishi, Y.Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,Triboluminescence of Lanthanide Coordination Polymers with Face-to-Face Arranged Substituents,
Angew. Chem. Int. Ed. 56, 7171 –7175 (2017).

14) K. Yanagisawa, Y. Kitagawa, T. Nakanishi, T. Seki, K. Fushimi, H. Ito, and Y. Hasegawa,A Luminescent Dinuclear EuIII/TbIII Complex with LMCT Band for Single-molecular Thermosensor
Chem. Eur. J. 24, 1956-1961 (2018).

15) Y. Hasegawa, Y. Kitagawa, T. Nakanishi, Effective photosensirized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes
NPG Asia Mater. 10: 52-70 (2018).

16) M. Yamamoto, Y. Kitagawa, T. Nakanishi, K. Fushimi, Y. Hasegawa, Ligand-assisted Back Energy Transfer in Luminescent Tb(III) Complexes for Thermo-sensing Properties

Chem. Eur. J. in press (2018).

17) S. Wada, Y. Kitagawa, T. Nakanishi, M. Gon, K. Tanaka, K. Fushimi, Y. ChujoY. Hasegawa, Electronic chirality inversion of lanthanide complex

Scientific Reports, in press (2018).

 

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