Two Dimensional Chiral Networks Emerging from the Aryl−F···H Hydrogen-Bond-Driven Self-Assembly of Partially Fluorinated Rigid Molecular Structures
作者:Zhongcheng Mu、Lijin Shu、Harald Fuchs、Marcel Mayor、Lifeng Chi
DOI:10.1021/ja801925q
日期:2008.8.1
Self-assembly of the partiallyfluorinated rigid molecules physisorbed at solution/graphite interface has been investigated by scanning tunneling microscopy. Upon adsorption, both the branched star-shaped compound 1 and the angulate rod 2 compromising diacetylene and acetylene interlinked benzene and pentafluorobezene formed two-dimensional chiral porous networks. The spontaneous formation of these
An effective, orthogonal deprotection strategy for differentially functionalized, linear and Y-shaped oligo phenylene ethynylenes
作者:Kusum L. Chandra、Sheng Zhang、Christopher B. Gorman
DOI:10.1016/j.tet.2007.05.006
日期:2007.7
Several methodologies for the selective deprotection acetylenes have been reported previously. However, as is shown here, they are often not reliable or convenient. Here, an approach is reported that is efficient and general. Use of this approach to synthesize several two- and three-armed oligo(phenylene ethynylene) molecules with differentiated end groups is reported. In addition, preliminary characterization of the fluorescent properties of some of these molecules and their ability to form self-assembled monolayers (SAMs) is reported. (C) 2007 Elsevier Ltd. All rights reserved.