光化学反应是以洁净、节能、节约为目标的合成方法,是合成化学中非常活跃的研究领域之一.光化学反应是以光为激发手段,研究激发态分子的反应.早在二十世纪初,意大利化学家G.Ciamician和P.Silber率先关注光照引发的化学反应.尽管当时实验条件非常简陋,但他们利用阳光的直接照射得到了许多难以合成的反应产物.第一次世界大战后,光化学反应的研究迅速在意大利、德国、英国、美国、日本、 Photochemical reaction is one of the most active research fields in synthetic chemistry, which is a synthesis method that aims at cleanness, energy conservation and conservation.Photochemical reaction is a light-inspired method to study the reaction of excited state molecules.As early as the early twentieth century, The Italian chemists G.Ciamician and P. Silber focused on the light-induced chemical reactions, and although the experimental conditions were so primitive at the time, they used the direct sunlight to obtain a number of difficult-to-synthesize reaction products. After the First World War, photochemical reactions The research rapidly in Italy, Germany, Britain, the United States, Japan,