Excited state intramolecular proton transfer mechanism of o-hydroxynaphthyl phenanthroimidazole
Liu Shuang1, Ma Yan-Zhen2, Yang Yun-Fan2, Liu Song-Song1, Li Yong-Qing2, †, Song Yu-Zhi1, ‡
       

(color online) Curves of potential energy versus O1–H2 bondlength in a frequency range from 0.9 Å to 1.9 Å of the HNPI molecule in S0 and S1 states.