title: Introduction of a planar defect in a molecularly imprinted photonic crystal sensor for the detection of bisphenol A.
abstract: 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.
authors: ITODYS, Université Paris Diderot (UMR 7086), 15 rue Jean de Baïf, 75013 Paris, France.
authors: Nébéwia
authors: N
authors: Griffete
authors: Hugo
authors: H
authors: Frederich
authors: Agnès
authors: A
authors: Maître
authors: Catherine
authors: C
authors: Schwob
authors: Serge
authors: S
authors: Ravaine
authors: Benjamin
authors: B
authors: Carbonnier
authors: Mohamed M
authors: MM
authors: Chehimi
authors: Claire
authors: C
authors: Mangeney
mesh_terms: D001559:Benzhydryl Compounds; D054802:Molecular Imprinting / Q000379:methods*; D010636:Phenols / Q000032:analysis*; D017785:Photons; D011109:Polymethacrylic Acids / Q000138:chemical synthesis / Q000737:chemistry*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D010636:Phenols; D011109:Polymethacrylic Acids; C030613:polymethacrylic acid; C006780:bisphenol A; D000098826:Bisphenol A Compounds