Density functional studies of probucol excited states and spectral properties ShiQuan Wu, LiMin Lu, Li Li, QiQi Liang, HuaXu Gao, TianYu Tang and YanLin Tang Eur. Phys. J. D, 77 1 (2023) 10 Published online: 12 January 2023 DOI: 10.1140/epjd/s10053-022-00577-2