§10.6 Photochemistry 6.2 Physical processes of Excitation and decay (1)Photoexcitation Internal conversion Absorbance Vibrational relaxation and Internal Conversion 2 Insystem conversion Intersystem Crossing Fluorescence absorption I T Phosphorescence i/ fluorescence v absorption 光子光激发基态激发态能级能带雅布 phosphorescence 隆斯基( Jablonski)图激发态衰变振动弛 豫内转换系间穿越辐射跃迁无辐射跃迁 rotational vibration state 单线态三线态荧光磷光 state 0 ground state Jablonski diagramJablonski diagram 6.2 Physical processes of Excitation and decay (1) Photoexcitation: §10. 6 Photochemistry Absorbance Vibrational Relaxation and Internal Conversion Intersystem Crossing Fluorescence Phosphorescence 光子 光激发 基态 激发态 能级 能带 雅布 隆斯基（Jablonski）图 激发态衰变 振动弛 豫 内转换 系间穿越 辐射跃迁 无辐射跃迁 单线态 三线态 荧光 磷光