ITODYS, Université Paris Diderot (UMR 7086), 15 rue Jean de Baïf, 75013 Paris, France.
J Colloid Interface Sci. 2011 Dec 1;364(1):18-23. doi: 10.1016/j.jcis.2011.07.028. Epub 2011 Aug 3.
This paper reports the preparation of a molecularly imprinted inverse opal hydrogel containing a 2D defect layer, by combining the Langmuir-Blodgett technique and the photonic crystal template method. By coupling the exceptional characteristics of molecularly imprinted polymers, sensitive to the presence of a target molecule, and those of photonic crystals in a single device, we could obtain a defect-embedded imprinted photonic polymer consisting in a three-dimensional, highly-ordered and interconnected macroporous array, where nanocavities complementary to analytes in shape and binding sites are distributed. As a proof of concept, we prepared a three-dimensional macroporous array of poly(methacrylic acid) (PMAA) containing molecular imprints of bisphenol A (BPA) and a planar defect layer consisting in macropores of different size. The optical properties of the resulting inverse opal were investigated using reflection spectroscopy. The defect layer was shown to enhance the sensitivity of the photonic crystal material, opening new possibilities towards the development smart optical sensing devices.
本文报道了一种通过结合 Langmuir-Blodgett 技术和光子晶体模板法制备含有二维缺陷层的分子印迹反蛋白石水凝胶。通过将对目标分子存在敏感的分子印迹聚合物的特殊特性与单个器件中的光子晶体的特性相结合，我们可以获得一种嵌入缺陷的印迹光子聚合物，它由三维、高度有序且相互连接的大孔阵列组成，其中分布着与分析物形状互补的纳米腔和结合位点。作为概念验证，我们制备了一种含有双酚 A (BPA)分子印迹的聚甲基丙烯酸 (PMAA) 的三维大孔阵列和一个由不同尺寸大孔组成的平面缺陷层。使用反射光谱研究了所得反蛋白石的光学性质。结果表明，缺陷层提高了光子晶体材料的灵敏度，为开发智能光学传感设备开辟了新的可能性。
