The signal of a nitrogen-centered radical adduct of DMPO was observed . The results obtained indicate that the trapped radical is a cation radical of diamine produced from diamine and photogenerated hole .

观察到DMPO与氮中心自由基加合物的ESR信号，表明 捕捉到的 自由 基是脂二胺与光生空穴作用而产生的胺的阳离子自由基。