The invention discloses preparation of an interruption conjugation-based donor /
acceptor type intramolecular exciplex light-emitting material and application thereof in preparation of an Organic Light-Emitting
Diode (OLEDs) Device, and belongs to the technical field of
organic electroluminescence. Specifically, sp3-hybridized atoms such as C, O, S and Si are used as bridging groups for interruptionconjugation; a donor and an
acceptor are connected in an interruption conjugation manner; moreover, a proper donor and a proper
acceptor are selected; a charge transfer
excited state between the donor and the acceptor is adjusted as a lowest
excited state of the whole molecule. Therefore, a hole
wave function of a formed
exciton is locally defined on the donor, and an
electron wave function is locally defined on the acceptor; the hole and
electron wave functions are completely separated in space. Therefore, the formed
exciton is low in
binding energy and favorable for spin flip of excited electrons, and has a reversed
intersystem crossing from a
triplet state to a
singlet state to realize effective utilization of the
triplet state by a fluorescent material. Through reasonable donor and acceptor cooperation, the interruption conjugation-based donor / acceptor type intramolecular exciplex light-emitting material also can realize red, green and blue full-color
light emission.