【摘要】 采用胶体晶体模板法,借助"三明治"结构制备了可与基底剥离的分子印迹光子晶体水凝胶膜（MIPHs）.该MIPHs以L-色氨酸（L-Trp）为模板分子,丙烯酰胺（AM）为功能单体,N,N’-亚甲基双丙烯酰胺（BIS）为交联剂,在紫外光下引发聚合.扫描电子显微镜（SEM）表征结果表明,MIPHs具有相互贯通的三维有序大孔结构.制得的MIPHs在L-Trp的缓冲溶液中可快速响应,当L-Trp的浓度从10^-10mol/L增大到10^-5mol/L时,MIPHs的Bragg衍射峰位移83 nm,并伴有明显的颜色变化.此外,MIPHs在L-Trp结构类似物L-酪氨酸（L-Tyr）和L-苯丙氨酸（L-Phe）的缓冲溶液中Bragg衍射峰位移较小,表明制得的MIPHs具有良好的选择性.更多还原

【Abstract】 Free-standing molecularly imprinted photonic hydrogels（ MIPHs） that peeled from the supporters were prepared using the colloidal crystal template method assisted by"sandwich structure". MIPHs were fabricated by UV polymerization with L-Tryptophan（ L-Trp） as template molecule,acrylamide（ AM） as functional monomer,N,N’-methylene bisacrylamide（ BIS） as crosslinking agent. MIPHs were characterized by highly ordered three-dimensional interconnected macroporous structure. MIPHs showed rapid response property when immersed into L-Trp buffers. The Bragg diffraction peak of MIPHs redshifted 83 nm as the concentration of L-Trp increased from 10^-10 mol / L to 10^-5 mol / L,and the color changes could be visible by the naked eyes.Moreover,MIPHs showed only a slight shift in the Bragg diffraction peak in solutions of L-Tyr or L-Phe,which indicated that MIPHs possessed a certain selectivity. High selectivety,rapid response and signal self-reporting of MIPHs might provide great convenience for the application in the real-world environments.更多还原