Strapped porphyrin rosettes based on the melamine–cyanuric acid motif. Self-assembly and supramolecular recognition
作者:Xue-Bin Shao、Xi-Kui Jiang、Shi-Zheng Zhu、Zhan-Ting Li
DOI:10.1016/j.tet.2004.07.072
日期:2004.10
larger size of the porphyrin unit. The new porphyrin rosettes could efficiently complex tripyridyl derivative 13 through intermolecular, cooperative coordination between Zn (II) and pyridine. Two new pyridine-bearing barbiturates 18a and 18b were also synthesized. Mixing the identical amount of 18a or 18b with 11 or 12 in chloroform-d led to the formation of new isomeric rosettes as a result of different
本文描述的合成,自组装行为的研究,和几个绑卟啉并入三聚氰胺氰脲或三聚氰胺基巴比妥类莲座超分子在氯仿的络合性能d。设计并合成了带状卟啉氰尿酸H 2 1及其Zn(II)配合物Zn1。既ħ 2 1和的Zn1可以结合三聚氰胺衍生物11或12,得到卟啉莲座,其比最初由Whitesides的报道,由于卟啉单元的较大尺寸的模型莲座更稳定。新的卟啉花环可以有效地络合三吡啶基衍生物通过Zn(II)和吡啶之间的分子间,协同配位作用,得到13。还合成了两个新的带有吡啶的巴比妥酸酯18a和18b。混合的相同量18A或18B与11或12在氯仿d导致形成的新异构体如玫瑰花结的吡啶单元的不同取向的结果图18A或18B中的瓣状体。1 H NMR研究还表明,含卟啉的玫瑰花结Zn1 3 · 11 3可以与含吡啶的玫瑰花结11 3络合。· 18a 3,导致新的两层型超分子体系结构的形成。