Light-controlled NO delivery systems promise new applications in phototherapies. For this purpose, a ruthenium nitrosyl complex [(2)Ru(NO)(Cl)] with the novel ligand N,N′-(1,2-phenylene)bis(1-methyl-1H-imidazole-2-carboxamide) (2) has been synthesised and characterised in detail. The photoactive Ru–NO}6 nitrosyl released NO in DMSO upon exposure to low-intensity UV-A light (λ = 366 nm). In order to create an applicable system the water-insoluble [(2)Ru(NO)(Cl)] was embedded into poly(L-lactide-co-D/L-lactide) nanofibrous non-wovens by electrospinning. Exposure of a 25 wt% non-woven of [(2)Ru(NO)(Cl)] to UV-A light resulted in a continuous release of NO into an aqueous solution. The cytoxicity of the non-woven against 3T3 mouse fibroblasts was very low.
光控 NO 输送系统有望在光疗中得到新的应用。为此,我们合成了一种亚硝基
钌配合物[(2)Ru(NO)(Cl)],并对新型
配体 N,N′-(1,2-亚苯)双(1-甲基-
1H-咪唑-2-甲酰胺)(2) 进行了详细表征。光活性Ru-NO}6亚硝基在
DMSO 中暴露于低强度 UV-A 光(λ = 366 纳米)时释放出 NO。为了创建一个适用的系统,通过电纺丝将不溶于
水的[(2)Ru(NO)(Cl)]嵌入到聚(
L-乳酸-co-D/
L-乳酸)纳米纤维非织造布中。将 25 wt%的[(2)Ru(NO)(Cl)]无纺布暴露在紫外线 A 光下,NO 会持续释放到
水溶液中。该无纺布对 3T3 小鼠成纤维细胞的细胞毒性非常低。