Abstract:

Carbosilane dendrimer with peripheral fluorescein groups was prepared and its fluorescence enhancement effect in the course of protonation was investigated in this study. The results indicated that the absorption spectra of the fluorescent groups of the dendrimer were consistent with the monofluorescein reference compound, but the fluorescence intensity and fluorescence quantum yields were higher than the reference. Certain energy transfer effects might occur among the luminescent groups in the same dendrimer, resulting in the enhanced fluorescence intensity.

Key words: dendrimer; fluorescence enhancement effect; signal amplification effect