Liheng Feng, Caihong Zhang, Hong-yan Bie
2005
Citations
0
Influential Citations
22
Citations
Journal
Dyes and Pigments
Abstract
Abstract Two novel fluorene compounds 9,9-bis[4′-(9″-carbazovinylene)-phenyl]fluorene (F-CZV) 4 and 9,9-bis{4′-[2″-phenyl-5″-(3‴-(methacrylamido)phenyl)]-1″,3″,4″-oxadiazolylphenyl}fluorene (F-MAOP) 6 were synthesized by the Heck reaction. The structures were characterized by MS, 1 H NMR, IR and UV–vis spectroscopy and the photoluminescent (PL) properties were investigated in ethyl acetate by UV–vis absorption and emission spectra. The spectroscopic properties of the two dyes were also analyzed in other solvents. By comparison with 9,9-bis(4′-iodophenyl)fluorene, the absorption and emission spectra of the two dyes showed a shift to higher wavelengths and displayed high fluorescence quantum yields (0.7–0.8), which can make these dyes very useful as new fluorescent probes.