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Reference type: Journal
Authors: Chang YS, Ko TH, Hsu TJ, Syu MJ
Article Title: Synthesis of an Imprinted Hybrid Organic-Inorganic Polymeric Sol-Gel Matrix Toward the Specific Binding and Isotherm Kinetics Investigation of Creatinine.
Publication date: 2009
Journal: Analytical Chemistry
Volume: 81
Issue: (6)
Page numbers: 2098-2105.
DOI: 10.1021/ac802168w

Abstract: Hybrid organicGŕĂinorganic polymeric solGŕĂgel materials imprinted with creatinine template molecules were synthesized for the specific binding of creatinine. Creatinine is a metabolite from creatine and is the final product from kidney metabolism. Therefore, creatinine can be an important index to estimate the function of the kidney. It was then chosen as the target molecule in this work. To achieve the specific binding toward creatinine, molecular imprinting was used to create a polymeric matrix for the regarding purpose. SolGŕĂgel was further added to create a rigid network structure for the absorption of creatinine. An inorganic precursor, tetraethoxysilane (TEOS), was mixed with an organic functional monomer, 2-acrylamido-2-methylpropane-sulfonic acid (AMPS), and the creatinine template to form a hybrid organicGŕĂinorganic imprinted polymer. The chemical functionality was achieved as well as a confined matrix via the polymerization and the hydrolysisGŕĂcondensation of the solGŕĂgel. The imprinting effect from the hybrid materials against the corresponding nonimprinted was investigated. BET (BrunauerGŕĂEmmettGŕĂTeller) analysis was carried out for the imprinted and the nonimprinted materials. The specificity of the hybrid materials was further examined by capping the surface silanol groups with chloro-trimethylsilane (CTMS) and 1,1,1,3,3,3-hexamethyldisilazane (HMDS), respectively. The capping effect was compared and discussed from the binding results. Selectivity of the materials toward creatinine was obtained using mixture solutions in the presence of creatinine and its analogues. Reutilization and storage stability of the hybrid organicGŕĂinorganic imprinted material were also studied. Additionally, the affinity distribution of the hybrid imprinted materials derived from the allosteric model was also analyzed from the adsorption isotherm data
Template and target information: creatinine


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