Belt-Shaped Cyclophanes via Photodimerization of Phenanthro-Condensed [18]Annulenes
摘要:
A novel cyclophane type can be obtained by photocyclodimerization reactions of condensed [18]annulenes. Quantitative yields in pure columnar liquid crystalline phases and high yields in 10(-6) M solution raise the inquiry about the unusual dimerization mechanism in this process. Concentration-dependent measurements of the emission and excitation spectra and the fluorescence lifetimes reveal a ground state aggregation in solution even at very low concentrations.
Belt-Shaped Cyclophanes via Photodimerization of Phenanthro-Condensed [18]Annulenes
摘要:
A novel cyclophane type can be obtained by photocyclodimerization reactions of condensed [18]annulenes. Quantitative yields in pure columnar liquid crystalline phases and high yields in 10(-6) M solution raise the inquiry about the unusual dimerization mechanism in this process. Concentration-dependent measurements of the emission and excitation spectra and the fluorescence lifetimes reveal a ground state aggregation in solution even at very low concentrations.
Belt-Shaped Cyclophanes via Photodimerization of Phenanthro-Condensed [18]Annulenes
作者:Klaus Müller、Herbert Meier、H. Bouas-Laurent、J. P. Desvergne
DOI:10.1021/jo960572v
日期:1996.1.1
A novel cyclophane type can be obtained by photocyclodimerization reactions of condensed [18]annulenes. Quantitative yields in pure columnar liquid crystalline phases and high yields in 10(-6) M solution raise the inquiry about the unusual dimerization mechanism in this process. Concentration-dependent measurements of the emission and excitation spectra and the fluorescence lifetimes reveal a ground state aggregation in solution even at very low concentrations.