Photo-polymerization-induced tightened domain enhancing the room-temperature phosphorescence emission

초록

Effectively enhancing the room-temperature phosphorescence (RTP) emission of pure organic phosphors is the goal that scholars continue to pursue. In this study, as a novel strategy, diacetylene monomers were introduced into a pure organic molecule, 2-(9H-carbazol-9-yl)ethanol (CZEO). Upon UV irradiation, the formed polydiacetylene (PDA) backbones caused a significant enhancement in the RTP emission. RTP emission continuously enhanced with the time UV irradiation. In addition, the synergistic enhancement with the help of halogen bonds was realized by introducing Br atoms into the CZEO unit. Diacetylene monomers are linked to pure organic phosphors (POPs), and the conjugated polydiacetylene formed by UV irradiation arranges the POPs tightly. This strategy significantly enhances the room-temperature phosphorescent efficiency of POPs.

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