Design and Characterization of Assembly Process by Coupling Layer-by-Layer Assembly with Hydrogel Photonic Crystal

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Abstract

Hydrogel photonic crystal was prepared by infiltrating the mixture of acrylamide and acrylic acid precursors into the polystyrene photonic crystal template. Poly(allylamine hydrochloride) (PAH), humic acid (HA) and Cd²⁺ were then layer-by-layer assembled onto the surface of the hydrogel via electrostatic force and the force of coordination between molecules. The response of hydrogel photonic crystal to the growth of the assemblies in aqueous solution are monitored through a series of readable Bragg diffraction shifts, which were due to the lattice change of photonic crystal structure responding to the interaction between the molecules. This approach is thus considered to be a promising way to characterize layer-by-layer assembly process without using label techniques and expensive instruments.

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	Articles by authors
	Niu Hui
	Yu Liping

Keywords： hydrogel photonic crystal； layer-by-layer assembly； Bragg diffraction peak

Received 2015-01-17;

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Niu Hui, Yu Liping.Design and Characterization of Assembly Process by Coupling Layer-by-Layer Assembly with Hydrogel Photonic Crystal[J] Chemcial Industry and Engineering, 2016,V33(6): 69-73

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