Wang Ya-Wen, Shi Yong-Tao, Peng Yu, Zhang Ai-Jiang, Ma Tian-Hua, Dou Wei, Zheng Jiang-Rong
State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2009 Mar;72(2):322-6. doi: 10.1016/j.saa.2008.09.013. Epub 2008 Oct 14.
Two novel binaphthyl compounds have been synthesized for the selective fluorescent recognition of Ca(2+) or Pb(2+). By introducing different terminal groups to the receptor unit, the fluorescence signals of the receptors are significantly changed: 1 is fluorescence enhancement for Ca(2+), 2 is fluorescence quenching for Pb(2+). The binding properties for metal ions were examined by the absorption and fluorescence spectra. The fluorescence intensity enhancement was ascribed to the complex formation between Ca(2+) and 1 which blocked the photo-induced electron transfer process.
已经合成了两种新型联萘化合物用于对Ca(2+)或Pb(2+)进行选择性荧光识别。通过向受体单元引入不同的端基，受体的荧光信号发生了显著变化：化合物1对Ca(2+)表现出荧光增强，化合物2对Pb(2+)表现出荧光猝灭。通过吸收光谱和荧光光谱研究了对金属离子的结合性质。荧光强度增强归因于Ca(2+)与化合物1形成配合物，从而阻断了光诱导电子转移过程。
