Method for enhancing photo-oxidative coupling reaction of 4-aminothiophenol and application of method

The invention relates to a method for enhancing a photo-oxidative coupling reaction of 4-aminothiophenol and application thereof, and the method comprises the following steps: adding 4-nitrothiophenol into a photo-catalytic oxidative coupling reaction system of 4-aminothiophenol, and carrying out a catalytic reaction under the mediation of 4-nitrothiophenol to oxidize 4-aminothiophenol into 4, 4 '-dimercaptoazobenzene. According to the invention, the method for enhancing the photo-oxidative coupling reaction of 4-aminothiophenol by mediation of 4-nitrothiophenol is provided for the first time; according to the method, the Raman characteristic peak intensity of 4, 4 '-dimercaptoazobenzene is obviously enhanced, and the Raman characteristic peak intensity under the method is obviously greater than the linear sum of the characteristic Raman peak intensity of 4, 4'-dimercaptoazobenzene detected by independent catalytic reaction of two types of thiophenol. The method provides a new thought for enhancing and regula