Department of Chemistry, Michigan Technological University, Houghton, MI 49931, USA.
Department of Chemistry, Michigan Technological University, Houghton, MI 49931, USA.
Methods. 2022 Aug;204:22-28. doi: 10.1016/j.ymeth.2022.03.019. Epub 2022 Apr 2.
A near-infrared fluorescent probe was prepared for selective detection of reduced nicotinamide adenine dinucleotide (NADH) in live cells. The probe turns off the fluorescence with a closed spironolactone switch. However, reduction of the probe by NADH turns on fluorescence at 740 nm. Theoretical calculations suggest a more planar arrangement between the rhodamine and quinoline moieties with increased π-delocalization resulting from reduction.
制备了一种近红外荧光探针,用于选择性检测活细胞中的还原型烟酰胺腺嘌呤二核苷酸(NADH)。探针通过闭合螺内酯开关使荧光关闭。然而,NADH 还原探针使其在 740nm 处产生荧光。理论计算表明,还原后,罗丹明和喹啉部分之间的平面排列更规则,π 离域增强。