title: Long lifetime pure organic phosphorescence based on water soluble carbon dots.
abstract: Carbon dots show potential in lighting and displays. However, only their fluorescence has been observed so far. Here we report the observation of phosphorescence from carbon dots in a polyvinyl alcohol matrix. The phosphorescence is attributed to C=O bonds on the surface of carbon dots and has a very long lifetime (~380 ms).
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888 Dongnanhu Road, Changchun, 130033, People's Republic of China.
authors.forename: Yehao
authors.initials: Y
authors.lastname: Deng
authors.forename: Dongxu
authors.initials: D
authors.lastname: Zhao
authors.forename: Xing
authors.initials: X
authors.lastname: Chen
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
authors.forename: Hang
authors.initials: H
authors.lastname: Song
authors.forename: Dezhen
authors.initials: D
authors.lastname: Shen
mesh_terms: D002244:Carbon / Q000737:chemistry*; D011142:Polyvinyl Alcohol / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D002244:Carbon; D011142:Polyvinyl Alcohol