About the Research
Light-emitting molecular materials with high brightness and durability
My research area is lanthanide-based photo-chemistry. In contrast to conventional metal ions, lanthanide ions have 4f orbitals, which accounts for their intriguing magnetic and optical properties. However, 4f orbitals are also very different from the d and π orbitals found in iron, cobalt, or nickel, and they are at present very difficult to understand. Their study requires a combination of fundamental physics, chemistry, and information science.
With the help of information scientists at ICReDD, I hope to be able to design high yield luminescent materials that use only small amounts of excitation energy and luminesce brightly. Examples where such materials would find applications include thermo-sensing and oxygen-sensing materials.
The Researcher’s Perspective
I love cooking. Being a chemist, I realise the importance of minding concentrations to achieve the right ratio of ingredients and a good taste.
Another passion is reading science fiction, especially Arthur C. Clarke. My favourite book is Childhood’s End, a cosmic story of aliens uniting humankind’s minds. Science fiction motivated me to become a scientist when I was an elementary school student, it drove me to specialize in photo-chemistry, and it is still with me.
Representative Research Achievements
- Chameleon Luminophore for Sensing Temperatures: Control of Metal-to-Metal and Energy Back Transfer in Lanthanide Coordination Polymers
Miyata, Y. Konno, T. Nakanishi, A. Kobayashi, M. Kato, K. Fushimi, Y. Hasegawa, Angew. Chem. Int. Ed., 2013, 52, 6413-641
DOI : 10.1002/anie.201301448
- Luminescent EuIII coordination zippers linked with thiophene-based bridges
Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa, Angew. Chem. Int. Ed., 2016, 55, 12059-12062
DOI : 10.1002/anie.201606371
- Hyper-stable organo-EuIII luminophore under high temperature for photo-industrial application
Nakajima, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa, Scientific Reports, 2016, 6, 24458
DOI : 10.1038/srep24458
- Triboluminescence of Lanthanide Coordination Polymers with Face-to-Face Arranged Substituents
Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa, Angew. Chem. Int. Ed., 2017, 56, 7171 –7175
DOI : 10.1002/anie.201703638
- Effective photosensirized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes
Y. Hasegawa, Y. Kitagawa, T. Nakanishi, NPG Asia Mater., 2018, 10: 52-70
DOI : 10.1038/s41427-018-0012-y
- A fluorescent metal-ion detector generated from a ‘masked’ tetraketone
- Chiral lanthanide lumino-glass for a circularly polarized light security device
- Let the Europium Shine Brighter