To Loop or Not to Loop: Influence of Hinge Flexibility on Self-Assembly Outcomes for Acridine-Based Triazolylpyridine Chelates with Zinc(II), Iron(II), and Copper(II)
作者:Caitlin E. Miron、Olivier Fleischel、Anne Petitjean
DOI:10.1002/chem.201803732
日期:2018.11.22
Central to these systems is the need for carefully designed organic ligands, generally with rigid components, that can undergo self‐assembly with metal ions in a predictable manner. Herein, we report the synthesis and study of three novel organic ligands that feature 3,6‐disubstituted acridine as a rigid spacer connected to two 2‐(1,2,3‐triazol‐4‐yl)pyridine “click” chelates through hinges of the same
协调驱动的自组装已被确立为有效构建自然和人工系统中复杂结构的有效策略,其应用范围从基因调控到金属有机框架。这些系统的核心是需要精心设计的有机配体,通常带有刚性成分,这些配体可以以可预测的方式与金属离子自组装。本文中,我们报告了三种新型有机配体的合成和研究,这些配体以3,6-二取代的cr啶为刚性间隔基,通过铰链与两个2-(1,2,3-三唑-4-基)吡啶“点击”螯合物连接长度相同,但柔韧性不同。这些“三原子”铰链的灵活性受到以下方面的调节:i)从仲酰胺官能团转移到叔酰胺官能团,以及ii)取代sp2个酰胺碳原子和一个3个亚甲基碳原子。为了理解铰链柔韧性在将自组装引导到单核环或双核圆柱体中的作用,这些变化对锌(II),铁(II)和铜(II)离子对自组装结果的影响是描述。