Li Yong-Fei, Wei Yuan-Feng, Tan Ying, Kong Xue-Fei, Zhou Kai, Wu Zhi-Min, Liu Yue-Jin
College of Chemical Engineering, Xiangtan University.
Anal Sci. 2014;30(2):257-62. doi: 10.2116/analsci.30.257.
An inorganic-organic silica material (SBA-15-1), prepared by immobilization of the naphthalimide derivative within the channels of the mesoporous silica material SBA-15, is characterized by several spectroscopic methods. SBA-15-1 can be used as a chemical sensor for detecting and removing Hg(2+) in a heterogeneous system. The fluorescence enhancement of SBA-15-1 was attributed to the formation of a complex between SBA-15-1 and Hg(2+) by a 1:1 complex ratio with the photo-induced electron transfer (PET) being forbidden. The sensor can be applied to the quantification of Hg(2+) with a linear range covering from 1.0 × 10(-7) to 1.0 × 10(-5) M under the neutral condition. Most importantly, the fluorescence changes of the sensor are remarkably specific for Hg(2+) in the presence of other metal ions. Moreover, the response of the sensor toward Hg(2+) is fast and chemically reversible. In addition, the sensor has been used for the determination of Hg(2+) in environmental samples with satisfactory results.
一种通过将萘酰亚胺衍生物固定在介孔二氧化硅材料SBA-15的孔道内制备的无机-有机二氧化硅材料（SBA-15-1），采用多种光谱方法对其进行了表征。SBA-15-1可用作化学传感器，用于在非均相体系中检测和去除Hg(2+)。SBA-15-1的荧光增强归因于SBA-15-1与Hg(2+)以1:1的络合比形成络合物，且光诱导电子转移（PET）被禁止。该传感器可用于在中性条件下对Hg(2+)进行定量分析，线性范围为1.0×10(-7)至1.0×10(-5) M。最重要的是，在存在其他金属离子的情况下，该传感器对Hg(2+)的荧光变化具有显著的特异性。此外，该传感器对Hg(2+)的响应快速且化学可逆。此外，该传感器已用于环境样品中Hg(2+)的测定，结果令人满意。
