Molecular Imprinted Receptors in Sol-Gel Materials for Aqueous Phase Recognition of Phosphates and Phosphonates

Sasaki, Darryl Y.; Rush, Daniel J.; Daitch, Charles E.; Alam, Todd M.; Assink, Roger A.; Ashley, Carol S.; Brinker, C. Jeffrey; Shea, Kenneth J.

doi:10.1021/bk-1998-0703.ch022

Cited by 21 publications

(19 citation statements)

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“…For example, the ability to bind and remove phosphates from river water samples was demonstrated using a MIP ( Figure 1) which exploited the affinity and selectivity of thiourea-based functional monomers for phosphate moieties (Kugimiya and Takei, 2006;Kugimiya and Takei, 2008). However, neither this, nor other MIP based receptors that bind phosphate groups, have been integrated with a transducer to produce a sensor capable of measuring phosphate in wastewater samples (Sasaki et al, 1998;Wulff et al, 2006;Emgenbroich et al, 2008 andCutivet et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Conductance based sensing and analysis of soluble phosphates in wastewater

Warwick

Guerreiro

Gómez‐Caballero

et al. 2014

Biosensors and Bioelectronics

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The current standard method used for measuring soluble phosphate in environmental water samples is based on a colourimetric approach, developed in the early 1960s. In order to provide an alternative, label free sensing solution, a molecularly imprinted polymer (MIP) was designed to function as a phosphate receptor. A combination of functional monomer (N-allylthiourea), cross-linker and monomer/template ratios were optimised in order to maximise the binding capacity for phosphate. When produced in membrane format, the MIP's ability to produce a reversible change in conductance in the presence of phosphate was explored for fabrication of a sensor which was able to selectively detect the presence of phosphate compared to sulphate, nitrate and chloride. In wastewater samples the sensor had a limit of detection of 0.16 mg P/l, and a linear range between 0.66 and 8 mg P/l. This is below the minimum monitoring level (1 mg P/l) as required by current legislation for wastewater discharges, making the sensor as developed promising for direct quantification of phosphate in environmental monitoring applications.

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Section: Introductionmentioning

confidence: 99%

Conductance based sensing and analysis of soluble phosphates in wastewater

Warwick

Guerreiro

Gómez‐Caballero

et al. 2014

Biosensors and Bioelectronics

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“…Silica has been used as the imprinting matrix for the imprinting of inorganic ions 7 and organic molecules. [29][30][31][32][33][34][35] Thereby, either the bulk material can be imprinted by the sol-gel method, thus creating microporous materials with specifically arranged functional groups, 7,30,34,35 or an imprinted polysiloxane layer is deposited on the silica surface. 29,33,[36][37][38] Another material that has been imprinted using the sol-gel technique is titanium oxide.…”

Section: Other Imprinting Matricesmentioning

confidence: 99%

Molecularly imprinted polymers in analytical chemistry

Haupt

2001

Analyst

369

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“…Sol-gel is a general way to create two groups of organic-inorganic substrates; hybrids of materials by weak interaction among organic and inorganic components (group I) or strong covalent binding with a siloxane matrix (group II) as shown in Figure 1 [18]. In a pioneering study by the Shea group, MIP were prepared by the sol-gel method for extraction of phosphates and phosphonates from aqueous samples and it was a great starting point for further developments in this field [20]. In this review we briefly cover the most recent MIP-sol-gel (MSG) preparation methods and their applications in extraction and microextraction studies.…”

Section: Introductionmentioning

confidence: 99%

Recent Applications of Molecularly Imprinted Sol-Gel Methodology in Sample Preparation

2019

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Due to their selectivity and chemical stability, molecularly imprinted polymers have attracted great interest in sample preparation. Imprinted polymers have been applied for the extraction and the enrichment of different sorts of trace analytes in biological and environmental samples before their analysis. Additionally, MIPs are utilized in various sample preparation techniques such as SPE, SPME, SBSE and MEPS. Nevertheless, molecularly imprinted polymers suffer from thermal (stable only up to 150 °C) and mechanical stability issues, improper porosity and poor capacity. The sol-gel methodology as a promising alternative to address these limitations allowing the production of sorbents with controlled porosity and higher surface area. Thus the combination of molecularly imprinted technology and sol-gel technology can create influential materials with high selectivity, high capacity and high thermal stability. This work aims to present an overview of molecularly imprinted sol-gel polymerization methods and their applications in analytical and bioanalytical fields.

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Molecular Imprinted Receptors in Sol-Gel Materials for Aqueous Phase Recognition of Phosphates and Phosphonates

Cited by 21 publications

References 0 publications

Conductance based sensing and analysis of soluble phosphates in wastewater

Conductance based sensing and analysis of soluble phosphates in wastewater

Molecularly imprinted polymers in analytical chemistry

Recent Applications of Molecularly Imprinted Sol-Gel Methodology in Sample Preparation

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