Conformational and Electronic Engineering of Twisted Diphenylacetylenes
作者:Glen Brizius、Kelvin Billingsley、Mark D. Smith、Uwe H. F. Bunz
DOI:10.1021/ol035532+
日期:2003.10.1
[structure: see text] Three tethered diphenylacetylenederivatives were prepared by alkyne metathesis. In these cycles, the twist angle between the two benzene rings is variable and determined by the nature of the linker. The engineering of the twist angle leads to a change of the UV-vis spectra of the cycles. The larger the twist angle in the macrocycles, the more blue shifted their lambda(max) (UV-vis)