Nano organic cage with dual-phase strong fluorescence and circular polarization luminescence and preparation method thereof
A nano-organic, circularly polarized technology, applied in the field of organic fluorescent materials, can solve the problems of inability to achieve high asymmetry and high fluorescence quantum efficiency, and achieve compensation for fluorescence quenching, high fluorescence quantum yield, high asymmetry factor and Effect
Pending Publication Date: 2021-11-09
SHENZHEN UNIV
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Problems solved by technology
[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a nano-organic cage with dual-phase strong fluorescence and circularly polarized light emission and its preparation method, aiming at solving the problem of existing fluorescent materials achieving dual-phase strong fluorescence. , the problem of being unable to achieve high asymmetry and high fluorescence quantum efficiency
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Embodiment 1
[0053] Such as figure 1 Shown is the synthetic route of the caged molecule RICHDA or the caged molecule SICHDA.
[0054] (i) providing the precursor molecule TPE-4CHO;
[0055] In some embodiments, the preparation method of the precursor molecule TPE-4CHO specifically includes the following steps:
[0056] 1) Mix 1,1,2,2-tetrakis(4-bromophenyl)ethylene, 3-formylphenylboronic acid, potassium carbonate, tetrakistriphenylphosphopalladium with toluene at a molar ratio of 5:30:60:1 The mixed solution of ethanol and water is evenly mixed to obtain a standby solution;
[0057] Specifically, the masses of the 1,1,2,2-tetrakis(4-bromophenyl)ethylene, 3-formylphenylboronic acid, potassium carbonate, and tetrakistriphenylphosphopalladium are 3.0g, 5.56g, and 10.24g respectively. g, 1.07g; the volumes of the toluene, ethanol and water are 80ml, 20ml, 20ml respectively.
[0058] 2) Then freeze the liquid nitrogen, evacuate for 15 minutes, and thaw the standby liquid in sequence, and re...
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The invention discloses a nano organic cage with dual-phase strong fluorescence and circular polarization luminescence and a preparation method thereof. The preparation method comprises the following steps of: providing a precursor molecule TPE-4CHO; dissolving the precursor molecule TPE-4CHO in a CHCl3 solution and stirring well to obtain a reaction precursor solution, adding levo-trans-1, 2-cyclohexanediamine or (1S, 2S)-(-)-1, 2-cyclohexanediamine into the reaction precursor solution, and reacting to correspondingly obtain a cage molecule RICHDA or a cage molecule SICHDA. The cage molecule RICHDA and the cage molecule SICHDA prepared by the method not only overcome the defect that the AIE molecule does not emit light when the poor solvent content is low, but also make up the defect of fluorescence quenching caused by aggregation due to the increase of the poor solvent of the ACQ molecule, achieve the purpose of solution and solid dual-phase strong fluorescence, and realize high asymmetric factors and high fluorescence quantum yield at the same time.
Description
technical field [0001] The invention relates to the technical field of organic fluorescent materials, in particular to a nano organic cage with dual-phase strong fluorescence and circularly polarized light emission and a preparation method thereof. Background technique [0002] In the past half a century, the development and application of organic fluorescent materials have developed rapidly. According to the influence of the application scenarios of the luminescent materials on the luminescent properties of the materials themselves, the organic luminescent materials are often divided into two categories: Aggregation-induced quenching materials (Aggregation-induced quenching materials) caused Quenching, ACQ) and aggregation-induced luminescent material (Aggregation-inducedEmission, AIE). However, these two types of organic light-emitting materials can only show satisfactory luminous efficiency in a certain concentration range or in an aggregated state (solution phase and sol...
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IPC IPC(8): C07D487/22C09K11/06C07B53/00
CPCC07D487/22C09K11/06C07B53/00C09K2211/1074C07B2200/07C07B2200/09
Inventor 刘一李文萍冯阳王毅彤
Owner SHENZHEN UNIV