A series of 4H-pyrrolo[1,2-a]benzimidazoles are synthesized, the UV and fluorescence spectra of 4H-yrrolo[1,2-a]benzimidazoles (5a～5m) are measured, and their fluorescence quantum yields are determined.

The fluorescence spectra and fluorescence quantum yields of the compounds 3a～3k, 4a～4b and 5～6 were examined.

The absorption-emission spectra and the fluorescence quantum yields in THF were determined and the structure-spectra relationships were discussed.

The fluorescent quantum yield(Φf)of a new kind of polymer TPA20 is measured as compared with quinine sulfate,which is 70.

Determination of fluorescence quantum yields of porphyrin-based photosensitizers;

Using L-tryptophan as a standard,for which a fluorescence quantum yield of 0.

Fluorescence quantum yield of CIP under neutral condition has been measured.

On the basis of the analyses of phytoplankton physiology and bio-optics,this paper proposes that the CFE(chloro- phyll fluorescence efficiency)algorithm is not a precision appreach to estimation of fluorescence quantum yield(FQY)by using moderate resolution imaging spectrometer(MODIS)data,and then presents the  algorithm,a new MODIS algo- rithm for more accurate estimation of FQY.

This paper designs a system through single-photon counting for calibrating the fluorescence efficiency of the certain material.

The roots of above-mentioned 50 species were treated with soil salt extractions,physiological indicators(fluorescence efficiency and water potential) were determined and 20 species with stronger salt-tolerance were selected,and the selected trees were planted along coastal roads in Yingkou Coastal Industrial Base,and the survive rates were investigated after 1~2 years.