Citation: Mao Zhong Tian, Feng Feng, Shuang Ming Meng, Yue Hua Yuan. A new selective fluorescent probe for lead ions[J]. Chinese Chemical Letters, ;2009, 20(3): 326-329. doi: 10.1016/j.cclet.2008.11.013 shu

A new selective fluorescent probe for lead ions

School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong 037009, China

Received Date: 16 June 2008

Fund Project: Financial support by Shanxi Scholarship Council of China (No. 200310) is gratefully acknowledged.

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.
- Probe,
- Pb²⁺,
- Selectivity,
- Photo-induced electron transfer,
- Fluorescence
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