A multi-stage single photochrome system for controlled photoswitching responses
F.J. Stricker, D.M. Sanchez, U. Raucci, N.D. Dolinski, M.S. Zayas, J. Meisner, C.J. Hawker, T.J. Martínez, J. Read de Alaniz, Nature Chemistry 14 (2022) 942–948.