Self-Selection in the Self-Assembly of Isomeric Supramolecular Squares from Unsymmetrical Bis(4-pyridyl)acetylene Ligands
作者:Liang Zhao、Brian H. Northrop、Yao-Rong Zheng、Hai-Bo Yang、Hyo Jin Lee、Young Min Lee、Joo Yeon Park、Ki-Whan Chi、Peter J. Stang
DOI:10.1021/jo800957r
日期:2008.9.1
between substituents of unsymmetrical bis(4-pyridyl)acetylene ligands dictate the self-selection of single isomers of [4 + 4] self-assembled squares is presented. Each [4 + 4] self-assembly is characterized by multinuclear (31)P and (1)H NMR spectroscopies and electrospray ionization mass spectrometry. NMR spectroscopic studies are used to provide a means of evaluating the efficiency of bulky substituents