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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~(-10)mol/L增大到10~(-5)mol/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. 相似文献
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Stability of the topological quantum critical point between multi-Weyl semimetal and band insulator
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One could tune a topological double-Weyl semimetal or a topological triple-Weyl semimetal to become a topologically trivial insulator by opening a band gap. This kind of quantum phase transition is characterized by the change of certain topological invariant. A new gapless semimetallic state emerges at each topological quantum critical point. Here we perform a renormalization group analysis to investigate the stability of such critical points against perturbations induced by random scalar potent... 相似文献
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