A methylene blue-based near-infrared fluorescent probe for rapid detection of hypochlorite in tap water and living cells
作者:Xin Huang、Zhipeng Li、Tingting Cao、Qian Cai、Chengchu Zeng、Hua Fu、Liming Hu
DOI:10.1039/c8ra01037d
日期:——
A methylene blue-based near-infrared fluorescent probe was designed for the selective determination of hypochlorite (ClO−), over other reactive oxygen species or interfering agents. Acetylated methylene blue was synthesized by introducing the acetyl group into the methylene blue framework, which can specifically recognize exogenous and endogenous ClO−. The acetylated methylene blue fluorescent probe
基于亚甲基蓝的近红外荧光探针设计用于选择性测定次氯酸盐 (ClO - ),而不是其他活性氧或干扰剂。乙酰化亚甲蓝是通过在亚甲蓝骨架中引入乙酰基而合成的,可以特异性识别外源和内源ClO - 。通过1 H NMR、 13 C NMR 和 HRMS 对乙酰化亚甲基蓝荧光探针进行了表征。利用探针产物研究了响应过程和可能的机制。探针对ClO−的发射响应在0~60 μM浓度范围内呈现良好的线性关系,检测限为0.1 μM(在660 nm和690 nm处测量)。乙酰化亚甲蓝的吸收和发射波长均在近红外区;此外,探针本身和降解产物在水中溶解良好,几乎没有毒性。该探针用于细胞内ClO -成像,并显示出较大的荧光增强(约增加200倍)。