合成以苯駢[k]螢蒽為單體之高分子衍生物

Abstract

For last two years, we founded a new method to synthesize Benzo[k]fluoranthene-based linear acenes successfully. This new synthetic design is different from the conventional methods that always undergo the Diels-Alder reaction. Our protocol is in the presence of palladium catalyst and the optimized conditions, we can get the 1,8-diethynylnaphthalene derivatives and aryl iodides undergo the cycloadditions to get the Benzo[k]fluoranthene derivatives. This protocol has highly functional group tolerance and excellent yield. We can also extend aromatic systems easily by this method. Our protocol is simpler and more efficient than conventional ones, and now is trying to extend the usage of this protocol. We tried to introduce different aromatic rings into the benzo[k]fluoranthene derivatives, keeping a bromind on the additional aryl groups of benzo[k]fluoranthene derivatives, substituting the bromide into 1-propyne by Negishi coupling to get the benzo[k]fluoranthene derivative monomers. Then, we use the MortreuxBunz catalyst system to have the Benzo[k]fluoranthene derivative monomers undergo the acyclic diyne metathesis reaction to obtain the benzo[k]fluoranthene- based polymer derivatives. Presently, we already generated three kinds of benzo[k]fluoranthene derivative monomers, and get two kinds of benzo[k]fluoranthene-based polymer derivatives by using acyclic diyne metathesis reaction. About the photophysical and electrochemical properties of these polymers will be determined in the future.