【摘要】 以SiO2三维光子晶体为模板,2,4,6-三氯酚为印迹分子,甲醇为溶剂,甲基丙烯酸为功能单体,乙二醇二甲基丙烯酸甲酯为交联剂,通过紫外光引发聚合,在2%氢氟酸溶液中去除光子晶体模板,0.015 mol/L NaOH溶液中洗脱印迹分子,制得2,4,6-三氯酚检测用分子印迹光子晶体水凝胶传感器。结果表明,传感器对2,4,6-三氯酚具有良好的响应与识别能力,在2,4,6-三氯酚浓度由0增加到6×10~4mol/L过程中,吸收峰红移31 nm;浓度继续增加,吸收峰开始发生蓝移;当浓度增加到1×10~3mol/L时,吸收峰蓝移56 nm,响应时间仅需要30 min。2,4,6-三氯酚分子印迹光子晶体水凝胶传感器具有高灵敏、高选择、易操作等优点,可实现对2,4,6-三氯酚的裸眼检测。更多还原

【Abstract】 A molecularly imprinted photonic crystal hydrogel sensor was developed with 2,4,6-trichlorophenol(2,4,6-TCP) as imprinting molecule,methanol as solvent,methacrylic acid as monomers and ethylene glycol dimethylacrylate as cross-linkers.The three-dimension silica colloidal crystal template was removed by 1% HF(V/V) and molecularly imprinted template was removed by 0.015 mol/L NaOH.The results showed that the maximum absorption peak red-shifted 31 nm when the concentration of 2,4,6-TCP changed from 0 to6×10~4mol/L.Then,with further increasing 2,4,6-TCP concentration,the maximum absorption peak began to blue-shift.When the concentration of 2,4,6-TCP changed to 1×10~3mol/L,the maximum absorption peak blue-shifted 56 nm and the response time was just 30 min.This molecularly imprinted photonic crystal hydrogel sensor showed high sensitivity,high selectivity and easy operation,and was applied for the naked-eye detection of 2,4,6-trichlorophenol.更多还原