Comparative study of imprinted polymer particles prepared by different polymerisation methods

Pérez-Moral, Natalia; Mayes, Andrew G.

doi:10.1016/s0003-2670(03)00533-6

Cited by 185 publications

(117 citation statements)

References 30 publications

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“…An interesting comparative study was performed by Pérez-Moral and Mayes [45], who imprinted propranolol by different polymerization methods, namely, bulk, suspension, emulsion, two-step swelling and precipitation. After performing the template extraction the resulting polymers were submitted to adsorption assays in the presence of propranolol.…”

Section: Polymerization Proceduresmentioning

confidence: 99%

Applications of molecularly imprinted polymers to the analysis and removal of personal care products: A review

Figueiredo

Erny

Santos

et al. 2016

Talanta

145

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Personal-care products (PCPs) involve a variety of chemicals whose persistency along with their constant release into the environment raised concern to their potential impact on wildlife and humans health. Regarded as emergent contaminants, PCPs demonstrated estrogenic activity leading to the need of new methodologies to detect and remove those compounds from the environment.Molecular imprinting starts with a complex between a template molecule and a functional monomer, which is then polymerized in the presence of a cross-linker. After template removal, the polymer will contain specific cavities. Based on a good selectivity towards the template, molecularly imprinted polymers (MIPs) have been investigated as efficient materials for the analysis and extraction of the so called emergent pollutants contaminants.Rather than lowering the limit of detections, the key theoretical advantage of MIP over existing methodologies is the potential to target specific chemicals. This unique feature, sometime named specificity (as synonym to very high selectivity) allows to use cheap, simple and/or rapid quantitative techniques such as fast separation with ultra-violet (UV) detection, sensors or even spectrometric techniques. When a high degree of selectivity is achieved samples extracted with MIPs can be directly analysed without the need of a separation step. However, while some papers clearly demonstrated the specificity of their MIP toward the targeted PCP, such prove is often lacking, especially with real matrices, making it difficult to assess the success of the different approaches.This review paper focusses on the latest development of MIPs for the analysis of personal care products in the environment, with particular emphasis on design, preparation and practical applications of MIPs.3

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Section: Polymerization Proceduresmentioning

confidence: 99%

Applications of molecularly imprinted polymers to the analysis and removal of personal care products: A review

Figueiredo

Erny

Santos

et al. 2016

Talanta

145

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“…Os polímeros apresentaram uma boa adsorção, o que confirma a interação iônica, porém não seletiva. Pérez-Moral e Mayes [14] observaram uma mesma situação na adsorção de propranolol em uma solução tamponada a pH 4,6 em um MIP sintetizado por precipitação, o que não foi observado em outras técnicas de polimerização como em massa e suspensão para o mesmo analito. A interação do analito muito polar com o ácido metacrílico pode ter sido prejudicada pela competição com o solvente de elevada polaridade no momento da síntese, explicando a falta de seletividade.…”

Section: Ensaios De Adsorçãounclassified

Polímeros de Impressão Molecular Obtidos Através de Polimerização por Precipitação e sua Aplicação na Técnica de Extração em Fase Sólida

Peçanha¹,

Dias²,

Spinelli³

et al. 2013

Polímeros

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Resumo: Polímeros de impressão molecular (Molecularly Imprinted Polymers, MIPs) foram sintetizados e aplicados como adsorventes na técnica de extração em fase sólida (EFS). O método de polimerização por precipitação foi usado para sintetizar os polímeros, devido à simplicidade de preparo, altos rendimentos e obtenção de partículas mais uniformes uma vez que o polímero não é triturado. Os MIPs foram sintetizados com ácido metacrílico como monômero funcional, trimetacrilato de trimetilolpropano como agente de reticulação e cloridrato de amilorida como molécula molde. O solvente de elevada polaridade empregado na síntese (THF:MeOH:H2O) possibilita empregar a técnica para moléculas polares como o cloridrato de amilorida. O controle no volume de solvente permitiu obter partículas maiores, de modo que a EFS foi realizada nas condições usuais, o que confere um potencial para aplicação dessa técnica de polimerização na preparação de adsorventes para EFS. Palavras-chave: Polímeros de impressão molecular (MIP), extração em fase sólida (EFS), polimerização por precipitação, cloridrato de amilorida. Molecularly Imprinted Polymers Prepared by Precipitation Polymerization and their Application to Solid Phase ExtractionAbstract: Molecularly imprinted polymers (MIPs) were synthesized and applied as adsorbents in the solid-phase extraction (SPE) technique. The polymers were synthesized by precipitation polymerization because of its simplicity, high yields and good control of final particle size. MIPs were synthesized using methacrylic acid as functional monomer, trimethylolpropane trimethacrylate as crosslinker and amiloride hydrochloride as template. The polar solvent mixture used (THF:MeOH:H 2 O) permitted polar molecules such as amiloride hydrochloride to be used. The solvent volume control allowed bigger particles to be formed, so that the solid-phase extraction technique could be employed under usual conditions, and therefore this polymerization technique is promising for preparing adsorbents for SPE.

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“…As regards to new sorptive materials, molecularly imprinted polymeric spheres, prepared by suspension polymerization, precipitation polymerization or multi-step swelling polymerization [52], which feature improved selectivity for a given target analyte or group analogous are expected to be exploited for BI spectroscopy or BI sorbents prior to LC separations. …”

Section: Future Trendsmentioning

confidence: 99%

Recent developments in automatic solid-phase extraction with renewable surfaces exploiting flow-based approaches

Miró

Hartwell

Jakmunee

et al. 2008

TrAC Trends in Analytical Chemistry

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. (2008). Recent developments in automatic solid-phase extraction with renewable surfaces exploiting flow-based approaches. TRAC -Trends in Analytical Chemistry, 27(9), 749-761. DOI: 10.1016749-761. DOI: 10. /j.trac.2008 TrAC MS:08-00052-REVISED Abstract: Solid-phase extraction (SPE) has been consolidated as the most versatile sample processing method for removal of interfering species and/or analyte enrichment. Although significant advances have been conducted over the past two decades for automation of the entire analytical protocol involving SPE via flow injection approaches, on-line SPE assays performed in a permanent mode lack sufficient reliability as a consequence of the progressive tighter packing of the bead reactor, contamination of the solid surfaces and potential leakage of functional moieties. This article overviews the current state-of-the-art of an appealing tool for overcoming the above shortcomings, the so-called bead injection (BI) analysis, based on automated renewal of the sorbent material per assay exploiting the various generations of flow injection analysis. It addresses novel instrumental developments for implementation of BI and a number of alternatives for on-line chemical derivatization reactions and pinpoints the most common instrumental detection techniques utilised. Relevant environmental and bioanalytical applications reported within the past few years are presented and discussed in detail.

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Comparative study of imprinted polymer particles prepared by different polymerisation methods

Cited by 185 publications

References 30 publications

Applications of molecularly imprinted polymers to the analysis and removal of personal care products: A review

Applications of molecularly imprinted polymers to the analysis and removal of personal care products: A review

Polímeros de Impressão Molecular Obtidos Através de Polimerização por Precipitação e sua Aplicação na Técnica de Extração em Fase Sólida

Recent developments in automatic solid-phase extraction with renewable surfaces exploiting flow-based approaches

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