Feng Liheng, Chen Zhaobin, Wang Duosheng
School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2007 Mar;66(3):599-603. doi: 10.1016/j.saa.2006.03.039. Epub 2006 Apr 18.
A selective and sensitive fluorescent chemosensor (BBOZP-CD) for Fe(3+) was composed of water-soluble beta-cyclodextrins and 2,6-bis(benzoxazolyl)pyridine which was synthesized through the reaction of 2,6-pyridinedicarboxylic acid and o-aminophenol catalyzed by polyphosphoric acid under microwave irradiation. The chemosensor BBOZP-CD for metal ions were carefully investigated by fluorescent quenching in present of metal ions. The result showed BBOZP-CD chemosensor was remarkable fluorescence quenching and a highly selectivity and sensitivity for Fe(3+) in neutral aqueous solution, and the other common metal ions did not notably disturb the detection of Fe(3+). Additionally, the effect of pH to the chemosensor for Fe(3+) was also studied. The result indicated the respond signals of BBOZP-CD to Fe(3+) was stable and hardly influenced while the pH value was greater than 3.6.
一种用于检测Fe(3+)的选择性灵敏荧光化学传感器（BBOZP-CD）由水溶性β-环糊精和2,6-双（苯并恶唑基）吡啶组成，后者是通过在微波辐射下由多磷酸催化的2,6-吡啶二甲酸与邻氨基酚反应合成的。通过在金属离子存在下的荧光猝灭对用于金属离子的化学传感器BBOZP-CD进行了仔细研究。结果表明，BBOZP-CD化学传感器在中性水溶液中对Fe(3+)具有显著的荧光猝灭以及高选择性和灵敏度，而其他常见金属离子不会显著干扰Fe(3+)的检测。此外，还研究了pH对用于Fe(3+)的化学传感器的影响。结果表明，当pH值大于3.6时，BBOZP-CD对Fe(3+)的响应信号稳定且几乎不受影响。
