Pyrenyl [4] helicene as well as synthesis method and application thereof

The invention discloses a synthesis method and application of pyrenyl [4] helicene, R in the helicene taking pyrene as a matrix is one of a hydrogen atom, a methoxy group and a cyano group, and the series of compounds have potential application value in the fields of luminescent materials, chemical sensing, biological imaging and detection. According to the synthesis method, the raw materials arerelatively simple to prepare, the performance is very stable, and special storage conditions are not needed; related reagents and solvents are common commercialized reagents, so that the cost is relatively low; the whole synthesis route is simple, the yield is higher, and the pollution is less; the synthesis method comprises three steps of synthesis, extraction and purification. The compound is more environmentally friendly and efficient compared with a traditional synthesis mode through a photochemical cyclization reaction, the method is easier to apply and popularize industrially, and the compound has good applicati