Laboratory of Coordination Chemistry

Laboratory of Coordination Chemistry
The team synthesizes complexes that exhibit magnet-like
properties and rare earth complexes with luminescent qualities.
The research focuses on how the design and synthesis of
ligands can yield useful changes in the way that such
complexes act as magnets or emit light.
  A complex is a compound formed by the combination of a metallic ion with one or more organic molecules referred to as ligands. The infinite variety of possible combinations of metals and ligands enables researchers to develop complexes with specific functional properties.
  The group led by Ms. Kachi-Terajima focuses on two research themes. One of these concerns the magnetic properties of molecular magnets. By linking such magnets together, 2D arrays of magnetic materials can be created that exhibit magnetic frustration. The aim of the research is to discover molecular magnet networks with novel magnetic properties.
  The other research theme focuses on the luminescence of rare earth complexes. The structures of such complexes can be designed not only to reinforce their luminescent qualities, but also to take advantage of this phenomenon to use such compounds as fluorescent labels. For instance, rare earth complexes can be made to bind to DNA, causing it to emit light.

Associate Professor Chihiro Kachi-Terajima

Graduated from Department of Chemistry, Faculty of Engineering, Gifu University. Completed master’s program, Applied Chemistry Division, Graduate School of Engineering, Gifu University. Doctor of science, Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University. Postdoctoral fellow, International College of Arts and Sciences, Yokohama City University. Appointed lecturer, Department of Chemistry, Faculty of Science, Toho University, in 2007.

Geochemical Laboratory

Organic Chemistry Laboratory
Dixon Island Cleaverville Drilling Project in Nov. 2011,
northwestern Australia. To obtain 3.2-billion-year-old“fresh”
rocks for a variety of astrobiological research, our research
team successfully completed its second continental drilling
  Our Mother Earth has irreversibly evolved since its formation about 4.6 billion years ago. On the surface of the Earth, environmental changes have affected life (e.g., glaciation and mass extinction of dinosaurs), and also life has affected the environments (e.g., oxygenation of the atmosphere by O2-producing organisms and anthropogenic global warming).
  To understand the causes and consequences of such co-evolution of Earth and Life throughout the history of the Earth, we are actively pursuing a variety of (bio)geochemical approaches, including major element geochemistry, (redox-sensitive) trace metal geochemistry, rare earth element geochemistry, and stable isotope geochemistry of carbon, nitrogen, sulfur, oxygen, and iron. We want to find clues for numerous mysteries surrounding the co-evolution of Earth and Life, hoping to approach the answers to the famous, and also astrobiological, inquiries by Paul Gauguin: D’où venons-nous ? Que sommes-nous ? Où allons-nous ? (Where do we come from? What are we? Where are we going?).

Associate Professor Kosei E. Yamaguchi

After studying quantum physics in the Department of Applied Physics, University of Tokyo, he ventured into geoscience and obtained an M.Sc. in geology from the same university in 1995. Then he flew to the States, after declining a JSPS DC1 fellowship, to study further at the Department of Geoscience, Pennsylvania State University. His graduate studies had been supported by NASA and NSF. He obtained a Ph.D. in geochemistry and astrobiology in 2002. Supported by NASA, he worked as a research associate at the Department of Geoscience, University of Wisconsin- Madison. Returning to Japan in 2004, he became a research scientist at JAMSTEC (Japan Agency for Marine- Earth Science and Technology), before taking up his current position in 2009 at the Department of Chemistry, Toho University. He has been a member of NASA Astrobiology Institute since its launch in 1998.