A new selective fluorescent probe for lead ions

A new selective fluorescent probe for lead ions
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一种新型铅离子选择性荧光探针

DOI:
10.1016/j.cclet.2008.11.013
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发表时间:
2009-03
影响因子:
9.1
通讯作者:
--
中科院分区:
化学1区
文献类型:
--
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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 (496nm) and emission (505nm) wavelengths are in visible range. The fluorescence quantum yields of the lead-free and lead-bound states of BPb1in 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.
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