Fluorescent Sensing and Discrimination of ATP and ADP Based on a Unique Sandwich Assembly of Pyrene-Adenine-Pyrene
作者:Zhaochao Xu、David R. Spring、Juyoung Yoon
DOI:10.1002/asia.201100120
日期:2011.8.1
discriminate adenosine‐5′‐triphosphate (ATP) from various nucleoside triphosphates, such as GTP, CTP, UTP, and TTP. The ability to distinguish ATP from adenosine diphosphate (ADP) by fluorescent signals is also urgently desired. Herein, we report two pyrene‐based zinc complexes as nucleoside polyphosphate receptors with high selectivity for ATP and ADP based on fluorescence and NMR studies. A unique
区分腺苷-5'-三磷酸(ATP)与各种核苷三磷酸(如GTP,CTP,UTP和TTP)仍然是一项艰巨的任务。还迫切需要通过荧光信号将ATP与二磷酸腺苷(ADP)区分开的能力。本文中,我们基于荧光和NMR研究报告了两种基于pyr的锌配合物作为核苷多磷酸盐受体,对ATP和ADP具有高选择性。在化合物1的情况下,观察到独特的pyr-腺嘌呤-re夹心结构与ATP或ADP结合使用,导致单体荧光强度增加;而三磷酸核苷的其他碱基(例如GTP,CTP,UTP和TTP)没有被夹在中间,导致pyr的单体-准分子荧光转换。具有with-–组装体的各种核碱基的不同结合模式使1成为ANP的高度选择性荧光传感器(N = di,tri)。在化合物2的情况下,前0.5当量的ATP诱导强烈的准分子发射,而ADP引起单体荧光峰大幅增强。这种荧光变化使2成为区分ATP和ADP的有效传感器。