Binding behaviour of molecularly imprinted polymers prepared by a hierarchical approach in mesoporous silica beads of varying porosity

Baggiani, Claudio; Baravalle, Patrizia Domenica; Giovannoli, Cristina; Anfossi, Laura; Passini, Cinzia; Giraudi, Gianfranco

doi:10.1016/j.chroma.2011.02.003

Cited by 19 publications

(12 citation statements)

References 22 publications

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“…The nitrogen adsorption plots reported in Fig. exhibit a typical Brunauer's Type IV isotherm for hMIPs, confirming experimental data previously reported for analogous materials . On the contrary, pMIPs exhibit a isotherm characterized by a reduced nitrogen adsorption in comparison with hMIPs and an hysteresis loop in the adsorption–desorption process.…”

Section: Resultssupporting

confidence: 88%

Comparison of binding behavior for molecularly imprinted polymers prepared by hierarchical imprinting or Pickering emulsion polymerization

Giovannoli

Passini

Anfossi

et al. 2015

J of Separation Science

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The aim of this study was the evaluation of the binding performances and selectivity of molecularly imprinted beads prepared toward several penicillins (i) by hierarchical bulk polymerization in the pores of template-grafted silica microbeads (hMIPs) and (ii) by Pickering emulsion polymerization in the presence of template-decorated silica nanobeads (pMIPs). 6-Aminopenicillanic acid was chosen as the common fragmental mimic template. Both approaches produced micron-sized polymeric beads with good recognition properties toward the target ligands whereas the selectivity pattern appeared quite different. The polymer prepared by the Pickering emulsion approach showed binding properties similar to imprinted beads prepared by hierarchical approach. Equilibrium binding constants changed their values from 0.1-0.2 × 10(6) (hMIPs) to 0.2-0.6 × 10(6) M(-1) (pMIPs), while the binding site densities changed from 3.7-4.8 (hMIPs) to 0.3-0.55 μmol/g (pMIPs). Compared to the hierarchical polymerization, Pickering emulsion polymerization represents a more practical approach when a template mimic needs to be used.

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Section: Resultssupporting

confidence: 88%

Comparison of binding behavior for molecularly imprinted polymers prepared by hierarchical imprinting or Pickering emulsion polymerization

Giovannoli

Passini

Anfossi

et al. 2015

J of Separation Science

Self Cite

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“…MIPs are not efficient in their adsorption capability and imprinted sites because the template molecules are encapsulated too deeply, preventing elution of the template molecule. 18 In MIP-MS, the imprinting process occurs on the mesoporous surface as a support material. Mesoporous materials have unique properties, such as high-surface area, adjustable pore diameter, and high porosity.…”

Section: Molecularly Imprinted Mesoporous Silicamentioning

confidence: 99%

Factors affecting the analytical performance of molecularly imprinted mesoporous silica

Mutakin

Hasanah

2021

Polymers for Advanced Techs

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Sample preparation was carried out for the removal of interfering substances in the complex matrix sample. Molecularly imprinted mesoporous silica (MIP-MS) is the specific adsorbent used in the sample preparation for solid-phase extraction. MIP-MS can increase the binding capacity, selectivity, and site accessibility of the molecular target. MIP-MS was synthesized using several materials, such as a silica precursor, surfactant, organosilane, functional monomer, and template molecule. Each material influences the formation and analytical performance of the MIP-MS. This review discusses the factors affecting the analytical performance in MIP-MS synthesis, such as the template molecular concentration, the ratio of the silica precursor and organosilane concentration, the type of functional monomer, and the functional monomer concentration. In addition, factors affecting the analytical performance in the adsorption-desorption study, such as pH, mass sorbent, eluting solvent, and washing solvent, to reach high-analyte recovery are also described.

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“…Up to now, many strategies such as surface imprinting or MIPs nanostructure construction have been taken to solve the problem [3][4][5][6][7][8]. MIPs prepared with appropriate methods exhibit high selectivity, large binding capacity and rapid binding kinetics and have been successfully applied in several fields, such as sensing, chromatography and solid-phase extraction [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Magnetic nanoparticles and quantum dots co-loaded imprinted matrix for pentachlorophenol

Yang

Han

Duan

et al. 2012

Journal of Hazardous Materials

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Binding behaviour of molecularly imprinted polymers prepared by a hierarchical approach in mesoporous silica beads of varying porosity

Cited by 19 publications

References 22 publications

Comparison of binding behavior for molecularly imprinted polymers prepared by hierarchical imprinting or Pickering emulsion polymerization

Comparison of binding behavior for molecularly imprinted polymers prepared by hierarchical imprinting or Pickering emulsion polymerization

Factors affecting the analytical performance of molecularly imprinted mesoporous silica

Magnetic nanoparticles and quantum dots co-loaded imprinted matrix for pentachlorophenol

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