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Reference type: Journal
Authors: Griffete N, Frederich H, Maître A, Schwob C, Ravaine S, Carbonnier B, Chehimi MM, Mangeney C
Article Title: Introduction of a planar defect in a molecularly imprinted photonic crystal sensor for the detection of bisphenol A.
Publication date: 2011
Journal: Journal of Colloid and Interface Science
Volume: 364
Issue: (1)
Page numbers: 18-23.
DOI: 10.1016/j.jcis.2011.07.028
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0021979711008757

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
Template and target information: bisphenol A, BPA
Author keywords: Photonic crystal, Defect layer, Molecularly imprinted polymers, Optical properties, bisphenol A

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