Carbonyl terminated hyperbranched polycarbonate capable of emitting bright fluorescence and preparation method thereof

The invention relates to carbonyl terminated hyperbranched polycarbonate capable of emitting bright fluorescence. Glycerol and diethyl carbonate are used as raw materials; a simple and controllable ester exchange condensation method is used for synthesizing the terminated hyperbranched polycarbonate; then, tert-Butyl acetoacetate is used for termination to obtain the hyperbranched polycarbonate. The synthesized hyperbranched polycarbonate does not contain pi keys such as benzene rings; the addition of fluorescent powder is not needed; the bright blue fluorescence can be given out; the characteristics of simple process, controllable process and low three-waste pollution are realized; in addition, the product stability is high; the toxicity is high; the biodegradability is high; the light intensity is high; the application range is wide. 本发明涉及种能发射明亮荧光的羰基封端的超支化聚碳酸酯，以丙三醇与碳酸二乙酯为原料以简单可控的酯交换缩聚法合成端羟基超支化聚碳酸酯，然后，以乙酰乙酸叔丁酯封端的超支化聚碳酸酯。所合成的超支化聚碳酸酯中不含苯环等π键，也无需添加荧光粉，就能发出明亮的蓝色荧光，具有合成工艺简单、过程可控、三废污染少的特征，并且产品的稳定性好、毒性低、生物降解性好、光强度高