reservoirs of intracellular copper. For the preparation of this probe, a novel π-extended fluorescent xanthene dye RQN was firstly synthesized via an intramolecular nucleophilic substitution of aromatic hydrogen (SNArH) strategy. Then, probe RQNA was prepared by the reaction of RQN and hydrazine hydrate, followed by treatment with acetone. RQNA exhibited selectivity, sensitivity (22 nM), and fast response
我们设计并合成了一种新型的近红外(NIR)线粒体靶向荧光探针RQNA,用于线粒体Cu2 +的特异性检测,因为线粒体是细胞内
铜的重要储库。为了制备该探针,首先通过分子内亲核取代芳族氢(SNArH)策略合成了一种新型的π扩展荧光x吨
染料RQN。然后,通过RQN与
水合
肼的反应,然后用
丙酮处理,制备探针RQNA。RQNA表现出选择性,灵敏度(22 nM)和快速响应时间(20 s),用于通过特定的Cu2 +触发的开环和
水解级联反应检测Cu2 +。RQNA具有细胞膜可穿透性和线粒体靶向性,可用于监测活细胞中的线粒体Cu2 +。