期刊
CHINESE JOURNAL OF CHEMISTRY
卷 24, 期 11, 页码 1589-1593出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.200690297
关键词
porphyrin; fullerene; N-oxide; fluorescence quenching; photoinduced electron transfer
Novel phenylene-bridged zinc bisporphyrins (1-4), fulleropyrrolidines (C-60-m, C-60-h) and their N-oxides (C-60-mo, C-60-ho) were synthesized. The fluorescence quenching processes of bisporphyrins in toluene solution by fulleropyrrolidines and their N-oxides were investigated by steady-state fluorescence spectra. The fluorescence quenching constants proved that the fluorescence quenching ability was decreased as reduction of the pyrrolidine functional groups of fullerene surface: C-60-h>C-60-m>C-60, and the fluorescence quenching ability was increased about 1.3-7.4 times by utilizing fulleropyrrolidine N-oxides (C-60-mo, C-60-ho) compared to fulleropyrrolidine compounds (C-60-m, C-60-h). The results revealed photoinduced electron transfer (PET) efficiency between bisporphyrin and fullerene derivatives could be tunable by change of functional groups on fullerene surface.
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