Research outcomes on ultrafast nonradiative deactivation from higher excited states in azulene dimer systems, conducted by Ms. Takada (D1), have been published in Physical Chemistry Chemical Physics.

Research conducted by Ms. Takada (D1) in collaboration with Prof. Kimizuka’s group at Kyushu University, which elucidates an ultrafast nonradiative deactivation process from higher excited states, has been published in Physical Chemistry Chemical Physics.

In this study, Ms. Takada captured the rapid deactivation of excited states in azulene dimer molecules, in which two azulene units—known to exhibit Anti-Kasha emission—are combined within a single molecular framework. Using picosecond transient absorption spectroscopy, Ms. Takada analyzed six molecules including the azulene dimer system and revealed that dimerization accelerates excited-state deactivation, yielding a decay time constant of approximately 1 ps.

“Ultrafast nonradiative decay from higher-lying excited states in azulene-dimers”
Yuta Sawada^†, Ami Takada^†, Ken Onda, Kiyoshi Miyata*, Yoichi Sasaki*, Nobuo Kimizuka
Phys. Chem. Chem. Phys. 27, 19677-19683 (2025).