Greetings from the Chairs

   We are pleased to announce that the International Symposium on Photochemistry and Photophysics of Coordination Compounds（ISPPCC）will be held in Himeji, Japan.
   ISPPCC is an international symposium with a distinguished history and tradition in the field of photochemistry, photophysics, and photofunctions of coordination compounds consisting of organic ligands and metal ions. This symposium has brought together leading researchers from around the world to discuss fundamental photochemical and photophysical processes in coordination compounds, including photoexcited states, electron transfer, energy transfer, luminescence, and photochemical reactions. 

   Coordination compounds exhibit diverse and complex electronic states and photoresponses that are difficult to realize with metals, metal oxides, or organic compounds alone. These properties arise from the cooperative interactions between orbitals derived from metal ions, such as d and f orbitals, and those derived from organic ligands, such as π-electron orbitals. Therefore, understanding the photochemistry and photophysics of coordination compounds requires an advanced fundamental scientific perspective that integrates molecular structure, electronic structure, excited-state dynamics, reaction processes, and related phenomena. The insights gained in this field also provide a foundation for future developments in a wide range of applications, including artificial photosynthesis, solar cells, photocatalysis, luminescent materials, photofunctional molecules, luminescent probes, and photodynamic therapy. 

   Since its beginning in Germany in 1974, ISPPCC has developed as a global forum for discussions on the photochemistry and photophysics of coordination compounds. The previous meeting, the 26th ISPPCC, was held in Italy in 2025. One of the distinctive features of the symposium is its format, in which participants gather in a single venue for highly specialized lectures and intensive discussions. This format provides an overview of emerging topics in photochemistry and photophysics and offers opportunities to harmonize different topics. We hope that this symposium will give you useful inspiration not only for imparting novel functions and value to coordination compounds but also for enhancing the flexibility in their molecular design. We also hope that it will contribute to the further advancement of fundamental research on the photochemistry and photophysics of coordination compounds, promote international academic exchange, and support the development of the next generation of young researchers. 

   We sincerely look forward to your participation.
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Scientific Topics

• Ultrafast Dynamics of Photoinduced Processes 
• X-rays and e-beams in Photosciences 
• Frontiers in Spectroscopy and Theory of Excited States 
• Multidimensional Spectroscopic and Structural Methods 
• Photoactive Molecules, Nanostructures and Devices 
• Photocatalysis, Solar Fuels, and Artificial Photosynthesis 
• Biological Optical Imaging 
• Photobiology, Diagnostics and Therapy