Green light thermal activation delayed fluorescence material, synthetic method thereof, electroluminescent device
A technology of thermally activated delayed and fluorescent materials, applied in luminescent materials, electro-solid devices, chemical instruments and methods, etc., can solve the problems of low photoluminescence quantum yield, low proportion of thermally activated delayed fluorescent materials, etc. The effect of high luminescence quantum yield, low singlet triplet energy level difference, and high luminous efficiency
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Embodiment 1
[0040] This embodiment provides a green thermally activated delayed fluorescent material, which is a target compound synthesized by the reaction of an electron donor and an electron acceptor. The target compound has a molecular structure of D-A, and in the molecular structure of D-A, D is an electron donor body, A is an electron acceptor, and there are fluorine-containing groups and bromine-containing groups on the electron acceptor, and the electron acceptor is a planar electron acceptor with an ultra-low triplet energy level, and the triplet state of the target compound The energy level range is 1.0-2.0eV. In this embodiment, the electron donor is phenoxazine, and the molecular structure of the electron acceptor is
[0041]
[0042] The molecular structure of the first target compound synthesized by the electron donor and the electron acceptor is as follows:
[0043]
[0044] In this embodiment, through ingenious molecular design, a compound with lower single triplet ...
Embodiment 2
[0067] This embodiment provides a green thermally activated delayed fluorescent material, which is a target compound synthesized by the reaction of an electron donor and an electron acceptor. The target compound has a molecular structure of D-A, and in the molecular structure of D-A, D is an electron donor body, A is an electron acceptor, and there are fluorine-containing groups and bromine-containing groups on the electron acceptor, and the electron acceptor is a planar electron acceptor with an ultra-low triplet energy level, and the triplet state of the target compound The energy level range is 1.0-2.0eV. In this embodiment, the electron donor is phenoxazine, and the molecular structure of the electron acceptor is
[0068]
[0069] The molecular structure of the second target compound synthesized by the electron donor and the electron acceptor is as follows:
[0070]
[0071] In this embodiment, through ingenious molecular design, a compound with lower single triplet...
Embodiment 3
[0094] This embodiment provides a green thermally activated delayed fluorescent material, which is a target compound synthesized by the reaction of an electron donor and an electron acceptor. The target compound has a molecular structure of D-A, and in the molecular structure of D-A, D is an electron donor body, A is an electron acceptor, and there are fluorine-containing groups and bromine-containing groups on the electron acceptor, and the electron acceptor is a planar electron acceptor with an ultra-low triplet energy level, and the triplet state of the target compound The energy level range is 1.0-2.0eV. In this embodiment, the electron donor is phenoxazine, and the molecular structure of the electron acceptor is
[0095]
[0096] The molecular structure of the third target compound synthesized by the electron donor and the electron acceptor is as follows:
[0097]
[0098] In this embodiment, through ingenious molecular design, a compound with lower single triplet ...
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