Nucleophilic substitution reaction of 1,7-dibromo-perylene diimide derivatives can expend the chemical structure and photophysical properties of perylene diimide. Here, we reported firstly the synthesis and mechanism of 1-bromo-7-hydroxyl perylene diimide derivative by the 1,7-dibromo-perylene diimide derivative in electron donor solvents (such as, NMP, DMF and etc) and under visible light irradiation. The structure of 1-dibromo-7-hydroxyl perylene diimide was confirmed by HR-MS, UV–Vis absorption spectra and comparison of UV–Vis absorption spectra with product from the heating chemical reaction. Furthermore, the 1-bromo-7-hydroxyl-perylene diimide derivative showed a higher optical response to some metal ions, such as Fe³⁺, Cu²⁺ and etc.

1,7-二溴-苝二酰亚胺衍生物的亲核取代反应可以扩展苝二酰亚胺的化学结构和光物理性质。在此，我们首先报道了1,7-二溴-苝二酰亚胺衍生物在电子供体溶剂（如NMP、DMF等）和可见光照射下合成1-溴-7-羟基苝二酰亚胺衍生物及其机理。 . 1-二溴-7-羟基苝二酰亚胺的结构通过 HR-MS、UV-Vis 吸收光谱以及 UV-Vis 吸收光谱与加热化学反应产物的比较得到证实。此外，1-溴-7-羟基-苝二酰亚胺衍生物对一些金属离子如Fe ³⁺、Cu ²⁺等表现出更高的光学响应。