Novel fluorine organic solar battery acceptor material as well as preparation method and application thereof
A technology for solar cells and acceptor materials, applied in the field of organic solar cell materials, can solve problems such as unfavorable commercial application, difficult preparation process, complex substructure, etc., achieve good visible light absorption range and absorption intensity, and synthetic raw materials are cheap and easy to obtain. , the effect of simple molecular structure
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[0046] Example 1
[0047] A fluorene-based organic solar cell acceptor material S-1, its chemical structural formula is:
[0048]
[0049] The above-mentioned fluorene-based organic solar cell acceptor material S-1, the preparation method is as follows (the preparation route is as figure 1 Shown):
[0050] (1) Synthesis of compound 1: Take a 250ml double-necked round-bottomed flask, treat it with anhydrous and oxygen-free conditions, add 2,7-dibromofluorene (15mmol), tetrabutylammonium iodide (30wt%, 4.5mmol), and pump Fill with nitrogen 3 times, inject 50ml DMSO and 30ml 50wt% NaOH solution under the protection of nitrogen, heat to 100℃, react overnight, TLC monitoring; post-processing: stop the reaction, cool to room temperature, transfer to 500ml separatory funnel, 100ml 10% (Volume concentration) Wash with dilute hydrochloric acid (add slowly, carefully exothermic), extract with petroleum ether, wash the organic phase with saturated brine 50ml*3, dry and concentrate the organic ...
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[0055] Example 2
[0056] A fluorene-based organic solar cell acceptor material S-2, its chemical structural formula is:
[0057]
[0058] The above-mentioned fluorene-based organic solar cell acceptor material S-2, the preparation method is as follows (the preparation route is as figure 2 Shown):
[0059] (1) The synthesis of compound 1 and compound 2 is the same as that of Example 1;
[0060] (2) Synthesis of compound 5: Take a 250ml double-necked flask, treat it with anhydrous and anhydrous, add compound 1 (16mmol) and 100ml of anhydrous THF, stir for 15min at -78°C, add n-BuLi(2.5eq, 16ml, 40mmol), stir the reaction; after 1.5h of reaction, add isopropanol naborate (4eq, 64mmol), turn off the refrigeration, overnight reaction, TLC monitoring; post-treatment: stop the reaction after 9h, quench by adding water, extract with dichloromethane, Drying and concentration, silica gel column chromatography, petroleum ether / ethyl acetate = 20 / 1 as eluent, to obtain pure white solid product...
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