SYNTHESIS AND STRUCTURAL PROPERTIES OF CYCLOPHANES CONTAINING THIOPHENE RINGS IN THE SIDE-CHAIN

摘要

The synthesis of some cyclophanes bearing in the linear side-chain carbon-carbon triple bonds conjugated with thiophene rings has been reported.Structure analysis of the products based on extensive NMR investigation is presented.UV-Vis absorption spectra and fluorescence spectra have been measured.The analysis of the spectra points out a correlation between the maxima and the structure of the side-chain.The replacement of a benzene ring with a thiophene ring causes a bathochromic shift when the benzene ring close to the paracyclophane moiety is replaced.