The Study For Specific Detection Of BPA And Indole By Surface Imprinting Preparation Photoresponsive Molecular Imprinted Materials Based On Sulfonicylazobenzene

In surface molecularly imprinted polymer (SMIP), the imprinted recognition sites are mainly distributed on the surface, which combined the advantages of accessible recognition sites, rapid transfer rate of target molecules, good separation efficiency. Therefore, SMIP exhibits wide applications in various fields such as molecular recognition, chromatographic separation, catalytic sensing and so on. Bisphenol A and indole are environmental pollutants, detection and separation of bisphenol A and indole using SMIP is of great importance. In this paper, a photo-responsive functional monomer based on azobenzene was synthesized, and photo-responsive SMIPs for bisphenol A and indole were fabricated. The details are described as follows:1. In Chapter One, the research advances in SMIP, the influence factors of materials, the preparation methods, the types of functional monomer, and the research progress in the detection of bisphenol A and indole have been reviewed.2. In Chapter Two, a rapid detection method for bisphenol A was established. The photoresponsive SMIP was prepared by precipitation polymerization on SiO2surface using4-[(4-methacryloyloxy)phenylazo]benzenesulfonic acid (MAPASA) as the functional monomer, bisphenol A as the template, and ethyleneglycol dimethacrylate (EGDMA) as the crosslinking agent. The prepared SMIP was characterized using scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FT-IR), thermogravimetric analysis (TGA), and N2-adsorption desorption analysis (BET). The adsorption properties and selective recognition of SMIP for bisphenol A were also studied. The effect of bisphenol A concentration on the material isomerization rate was investigated, and therefore a new detection method for bisphenol A with a limit of detection0.5ppm was developed. This method was applied to test trace bisphenol A in mineral water and tap water. 3. In Chapter Three, SMIP was firstly prepared on SiO2surface, the core SiO2was removed by20%HF solution and hollow shell photoresponsive surface molecularly imprinted polymer (HSMIP) was obtained. The HSMIP was characterized using SEM, FT-IR, TGA, and N2-adsorption desorption analysis. The adsorption properties and selective recognition of HSMIP were also studied. Compared to the SMIP, HSMIP displays excellent performance, such as photo-responsive, dynamic properties and adsorption performance and so on. The HSMIP was used for the detection of BPA in water.4. In Chapter Four, the photoresponsive SMIP was fabricated by atom radical transfer polymerization (ATRP) on TiO2surface using MAP ASA as the functional monomer, indole as the template, EGDMA as the cross-linker, N,N,N’,N’,N"-pentamethyldiethylenetriamine (PDTMEA)/CuBr as the catalyst, and2-bromoisobutyrate as the initiator. The prepared SMIP was characterized using FT-IR, TGA, and N2-adsorption desorption analysis. The adsorption properties and selective recognition of the SMIP for indole were also studied. And by the gas chromatography detected gasoline and diesel iol for indole, which the recoveries were91.2%and100.0%, respectively.5. In the last chapter, the results and conclusions were summarized, and some recommendations for future work were given.