Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1255530 | Chinese Chemical Letters | 2009 | 4 Pages |
Abstract
A new fluorescent probe (BPb1) for Pb2+ 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 nm) and emission (505 nm) wavelengths are in visible range. The fluorescence quantum yields of the lead-free and lead-bound states of BPb1 in acetonitrile are 0.013 and 0.693, respectively. The large chelation enhanced fluorescence effect (CHEF) with Pb2+ can be explained by the blocking of the photoinduced electron transfer (PET) process.
Related Topics
Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Mao Zhong Tian, Feng Feng, Shuang Ming Meng, Yue Hua Yuan,