Chem. Sci., 2025, Accepted Manuscript DOI: 10.1039/D5SC04791A, Edge Article Rintaro Ogawa, Tomokazu Kinoshita, Tomoya Kuwabara, Hayato Sakai, Makoto Harada, Taku Hasobe, Gaku Fukuhara The active control of singlet fission (SF) by external stimuli presents a major challenge in current chemistry, although it is yet in the initial stages. In this study, we synthesized...