| abstract |
The invention discloses an organic long afterglow material with photoactivation characteristics, a preparation method and application thereof, and the chemical structure of such material has the general formula: Wherein, R is H, F, OCH 3 ; the present invention takes the triphenylphosphine oxide derivatives as the research object, and prepares the series of compounds by connecting different substituents at the para positions of the three benzene rings of the triphenylphosphine oxide . By controlling the UV irradiation time, the phosphorescence lifetime and intensity of this series of materials are significantly improved. Combined with different dynamic adjustability, multiple information encryption applications can be realized. |