Coordination Chemistry

Creation of chemistry on photofunctional metal complexes

Introduction of Research

Control of stimulus response and functionalization of smart soft crystals using luminescent metal complexes

Generally, the term crystal evokes thoughts of hard and stable materials like diamond and quartz that are distinct from liquids and polymers. On the other hand, soft crystals respond to gentle stimuli such as vapor exposure and rubbing but maintain their structural order and exhibit remarkable visual changes in their shape, color, and luminescence. Our laboratory is focusing on the development of soft crystals through molecular design and synthesis based on the metal-metal interactions, π/π interactions, and hydrogen bonds.

Fabrication of novel 3d-metal complexes with intense luminescence

For effective utilization of elements, it is important to develop new functional materials using inexpensive and abundant elements. Our laboratory also focuses on the fabrication of Cu(I) complexes exhibiting intense luminescence as the next-generation emissive materials that replace expensive noble metal complexes.

Fabrication of metal-complex assemblies for artificial photosynthesis

Artificial photosynthesis that biomimics the natural process of photosynthesis to convert sunlight and water has attracted considerable attention as one of the promising approaches to generate clean energy resources. To realize artificial photosynthesis, not only to develop highly active photosensitizers, oxidation and reduction catalysts, but also to integrate reasonably these three essential components are necessary. Our laboratory is focusing on the self-assembly of functional metal complexes on the various interfaces (e.g. surfaces of semiconductor nanoparticles, organic polymer catalyst, lipid bilayer, etc.) to integrate the three essential components for understanding the ideal structure for artificial photosynthesis.

Vapochromic soft crystals based on the Pt(II) complex
Metal-complex assemblies for artificial photosynthesis

Introduction of laboratory

Metal complexes composed of metal cation(s) and ligand(s) are fascinating materials to create new properties and functions. We have focused on the development of the chemistry concerning photofunctionality based on various metal complexes. In particular, we have interested in the construction of assembled metal complexes for “soft crystal” and “artificial photosynthesis”.