The synthesis and upconverted fluorescent properties of three novel organic compoundswith the structure: donor/bridge/acceptor are reported. The dyes show strong upconvertedfluorescence.
The fluorescence spectra and photodimerization of naphthalene end-laballed poly(ethylene glycol) oligomers (N-Pn-N) in methanol in the prescence of alkali cations have been investigated. The ion enhances or inhibits i...The fluorescence spectra and photodimerization of naphthalene end-laballed poly(ethylene glycol) oligomers (N-Pn-N) in methanol in the prescence of alkali cations have been investigated. The ion enhances or inhibits intramolecular excimer formation and photodimerization of N-Pn-N, depending on the size of the ion and the length of the polyether chain. This observation suggests that the polyether chain binds the ion, thus adopts a crown ether-like conformation.展开更多
文摘The synthesis and upconverted fluorescent properties of three novel organic compoundswith the structure: donor/bridge/acceptor are reported. The dyes show strong upconvertedfluorescence.
文摘The fluorescence spectra and photodimerization of naphthalene end-laballed poly(ethylene glycol) oligomers (N-Pn-N) in methanol in the prescence of alkali cations have been investigated. The ion enhances or inhibits intramolecular excimer formation and photodimerization of N-Pn-N, depending on the size of the ion and the length of the polyether chain. This observation suggests that the polyether chain binds the ion, thus adopts a crown ether-like conformation.
