刊名:Optik - International Journal for Light and Electron Optics
出版年:2017
出版时间:January 2017
年:2017
卷:128
期:Complete
页码:292-296
全文大小:730 K
文摘
Steady state florescence and three-photon-absorption-induced upconversion fluorescence of two fluorene-based derivatives with different electron donors were investigated. The upconversion fluorescence intensity is cubic with the input intensity. The electron donors have great impact on the upconversion fluorescence property. The transition processes of the two molecules were investigated with TD SCF/DFT theory methods, the results of theory and experiments accord well with each other.