作者:Yanfeng Tang、Yang Huang、Linxia Lu、Chun Wang、Tongming Sun、Jinli Zhu、Guohua Zhu、Jinyang Pan、Yingli Jin、Ailin Liu、Miao Wang
DOI:10.1016/j.tetlet.2018.09.038
日期:2018.10
A novel pyrene-based receptor bearing benzothiazole was synthesized as a good turn-on fluorescent sensor for the recognition of Zn2+. The probe showed an excellent selectivity for Zn2+over most other competing ions (eg, Cr3+, Li+, Cd2+, Al3+, Pb2+, Li+, Mg2+, Ag+, Ca2+, Ni2+, Mn2+, Fe3+, Hg2+, Ba2+, K+, Na+, Cu2+, Fe2+) in EtOH-HEPES (65:35, v/v, pH = 7.20), which might be attributed to the photoinduced
合成了一种新型的带有苯并噻唑的pyr基受体,作为识别Zn 2+的良好的开启荧光传感器。该探针对Zn 2+的选择性优于大多数其他竞争离子(例如Cr 3+,Li +,Cd 2 +,Al 3+,Pb 2 +,Li +,Mg 2 +,Ag +,Ca 2+,Ni 2 +,Mn 2 +,Fe 3+,Hg 2 +,Ba 2 +,K +,Na +,Cu 2 +,Fe 2+)(EtOH-HEPES(65:35,v / v,pH = 7.20)中),这可能归因于光致电子转移(PET)机制。根据Job's图,1 H NMR滴定和ESI-MS确定1:1化学计量的PBZ -Zn 2+络合物的形成。络合物的结合常数为4.04×10 4 M -1,检测极限为2.58×10 -7M 。研究了PBZ在实际水样品中识别Zn 2+的潜在应用。生物成像研究还表明,PBZ可用于检测活细胞中的Zn 2+。这些结果表明PBZ可能是Zn