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Reference type: Journal
Authors: Mujahid A, Khan AI, Afzal A, Hussain T, Raza MH, Shah AT, uz Zaman W
Article Title: Molecularly imprinted titania nanoparticles for selective recognition and assay of uric acid.
Publication date: 2015
Journal: Applied Nanoscience
Volume: 5
Issue: (5)
Page numbers: 527-534.
DOI: 10.1007/s13204-014-0346-x

Abstract: Molecularly imprinted titania nanoparticles are successfully synthesized by sol-gel method for the selective recognition of uric acid. Atomic force microscopy is used to study the morphology of uric acid imprinted titania nanoparticles with diameter in the range of 100-150 nm. Scanning electron microscopy images of thick titania layer indicate the formation of fine network of titania nanoparticles with uniform distribution. Molecular imprinting of uric acid as well as its subsequent washing is confirmed by Fourier transformation infrared spectroscopy measurements. Uric acid rebinding studies reveal the recognition capability of imprinted particles in the range of 0.01-0.095 mmol, which is applicable in monitoring normal to elevated levels of uric acid in human blood. The optical shift (signal) of imprinted particles is six times higher in comparison with non-imprinted particles for the same concentration of uric acid. Imprinted titania particles have shown substantially reduced binding affinity toward interfering and structurally related substances, e.g. ascorbic acid and guanine. These results suggest the possible application of titania nanoparticles in uric acid recognition and quantification in blood serum
Template and target information: uric acid
Author keywords: molecular imprinting, nanoparticles, spectroscopy, titania, uric acid


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