A new selective fluorescent probe for lead ions

作者：Tian Mao Zhong; Feng Feng; Meng Shuang Ming; Yuan Yue Hua

来源：Chinese Chemical Letters, 2009, 20(3): 326-329.

DOI：10.1016/j.cclet.2008.11.013

• Probe
• Pb(2 )
• Selectivity
• Photo-induced electron transfer
• Fluorescence

A new fluorescent probe (BPb(1)) for Pb(2 ) has been synthesized, where diethanolamine (receptor) is linked with 4,4-difluoro-4-bora-3a, 4a-diaza-s-indacene (BODIPY) (fluorophore) via a methylene group (spacer). The absorption (496 ran) and emission (505 nm) wavelengths are in visible range. The fluorescence quantum yields of the lead-free and lead-bound states of BPb(1) in acetonitrile are 0.013 and 0.693, respectively. The large chelation enhanced fluorescence effect (CHEF) with Pb(2 ) can be explained by the blocking of the photoinduced electron transfer (PET) process.

• 出版日期2009-3
• 单位山西大同大学