A new terpyrrolic analogue of dipyrrolylquinoxalines: an efficient optical-based sensor for anions in organic media
作者:Sergiy V. Shevchuk、Vincent M. Lynch、Jonathan L. Sessler
DOI:10.1016/j.tet.2004.08.054
日期:2004.11
This enhancement is particularly dramatic in the case of H2PO4− (studied as its tetrabutylammonium salt); in CH2Cl2 it is bound with an affinity constant, K, of 17,500 M−1 by the terpyrrole of this report vs. 80 M−1 in the case of DPQ. The present findings thus support the emerging notion that a range of pyrrole-based anion recognition and sensing systems may be produced by replacing the central quinoxaline
描述了一种新的二吡咯基喹喔啉(DPQ)的吡咯类似物的合成和X射线结构表征,该新吡咯类似物包含两个由中心1,2-连接的吡咯桥接的吡咯阴离子识别基团。相对于“亲本” DPQ系统,这种新型的吡咯型支架可作为有机介质中卤化物和磷酸二氢根阴离子的改进的比色和荧光传感器。这种增强是在H的情况下特别显着的2 PO 4 - (研究作为其四丁基铵盐); 在CH 2氯2势必与亲和常数,ķ,17,500中号-1本报告的terpyrrole与80米-1对于DPQ。因此,本发现支持以下新兴观点:可以通过用其他桥连亚基取代DPQ中的中央喹喔啉间隔基来产生一系列基于吡咯的阴离子识别和传感系统,并且这些新受体的性质可能与它们的DPQ截然不同。父母'。