Research progress in organic long afterglow materials

Abstract

Abstract: This paper reviewed the research progress in long afterglow materials in recent years. The organic afterglow materials were developed recently through breaking through the difficulty in modulating the excited state with ultra?fast decay and they exhibited long?life emission with persistent luminescence at room temperature. The lifetime of these developed organic afterglow materials was several orders of magnitude longer than that of conventional fluorescence and phosphorescence emission. The synthetic strategies of organic afterglow materials were also discussed， which included crystal induction， heavy atom effect， hydrogen bonding， self-assembly， host?guest doping， etc. Own to the unique properties of organic afterglow materials such as long luminescence life， large Stokes shift， easy excited state transition， and environment-sensitive emission， their application prospects in various fields were further discussed.

Key words: organic afterglow, luminous mechanism, optical applications

References

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