1. State Key Laboratory of Ultrafast Laser Spectroscopy, Zhongshan University, Guangzhou 510275, China (J.Y.Z., W.J.P.); Department of Chemistry, Zhongshan University, Guangzhou 510275, China (M.L.G., Y.S.Y); and Department of Biology and Chemistry, City Polytechnic of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (P.A.T.)