Method for generating phosphorescence in organic compound

Abstract

The invention relates to a method for generating phosphorescence in an organic compound. The organic compound must have a donor function group and a receptor function group, donor atoms have SP<3> hybrid characteristics, and receptor atoms have SP<2> hybrid characteristics. The donor atoms lose electrons in an SP<3> hybrid state and transfer the electrons in the SP<3> hybrid state to partially positively charged receptor atoms in an SP<2> hybrid state in order to make a molecule be in an excited triplet state, and the excited molecule is resonated to make the receptor atoms become the SP<3> hybrid state from the SP<2> hybrid state in order to make an original donor become a receptor and an original receptor become a donor; and the donor atoms, which are receptor atoms in a ground state, lose the electrons in an SP<3> hybrid state and transfer the electrons in the SP<3> hybrid state to the receptor atoms in the SP<2> hybrid state, and orbit-spin coupling is carried out again to make the molecule return to the ground state in order to generate phosphorescence. An organic phosphorescence generation mechanism is explicated in the invention for the first time, and scientific research personnel can easily synthesize organic molecules in a liquid or solid state and with visible phosphorescence in room temperature air under the guidance of the mechanism.

Description

technical field [0001] The present invention relates to a method of phosphorescence generation in organic compounds. Background technique [0002] Usually, any form of energy such as light, electricity, heat, and friction can excite electrons in a substance to an excited state. The transition of electrons from an excited state to a ground state can produce luminescence. Generally, according to the type of excited state, luminescence is divided into fluorescence and phosphorescence, which are called fluorescence and phosphorescence in English. If the spin direction of the electron in the excited state is different from that in the ground state, then it is called fluorescence. In contrast, if the electrons in the excited state have the same spin direction as the electrons in the ground state, the light emitted when the electrons return from the excited state to the ground state is called phosphorescence. In fluorescence, the electrons in the excited state are opposite to th...

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Problems solved by technology

In addition, the traditional point of view is that organic phosphorescence at room temperature and in air is difficult to observe for the following reasons: 1, pure organic molecules lack the heavy metal effect to trigger the intersystem jump from singlet to triplet state; 2, due to the excited state Long lifetime, resulting in a series of factors such as molecular collisions, reactions between excited states, internal transitions, molecular rearrangements, energy transfer, exciplex formation, etc. Especially oxygen and water molecules in the air can easily quench the triplet state; 3, Temperature can accelerate the reaction in the above 2, so molecular phosphorescence is generally only observed at low temperature or when oxygen is removed

[0004] Not only that, people are limited to the classic concept of organic phosphorescence, and have not actually found the fundamental mechanism of phosphorescence

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