Supercritical CO<sub>2</sub>-assisted synthesis of an ultrasensitive amphibious quantum dot-molecularly imprinted sensor

Lourenço, Anita; Viveiros, Raquel; Mouro, A.; Lima, João Carlos; Bonifácio, Vasco D. B.; Casimiro, Teresa

doi:10.1039/c4ra10179k

Cited by 17 publications

(10 citation statements)

References 27 publications

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“…Recently, we designed core‐shell sensory particles of molecularly imprinted and non‐imprinted polymers incorporating CdTe amphibious quantum dots (CdTe@MIPs and CdTe@NIPs) . After one month of storage we observed that, contrary to CdTe@MIPs (luminescent up at least two years), CdTe@NIPs lose their fluorescence.…”

Section: Overview Of Techniques and Detection Methods For Determinatimentioning

confidence: 98%

Molecular Weight Determination by Luminescent Chemo–enzymatics

Pires¹,

Moro

Lourenço

et al. 2016

ChemistrySelect

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A novel methodology for the determination of the number‐average molecular weight (Mw) of linear, branched and crosslinked polymers is disclosed. The method relies on chemo‐enzymatic‐triggered fluorescence of dormant CdTe polymer‐caged quantum dots synthesised in supercritical carbon dioxide. Polyurea (PURE) dendrimers (G1, G4, G5 and G6) are presented as a case study using the enzyme urease but the protocol is applicable to other synthetic and natural polymers. Simple, versatile and accurate, luminescent chemo‐enzymatics is a low cost alternative to conventional techniques (e. g. GPC/SEC, MALDI‐TOF).

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Section: Overview Of Techniques and Detection Methods For Determinatimentioning

confidence: 98%

Molecular Weight Determination by Luminescent Chemo–enzymatics

Pires¹,

Moro

Lourenço

et al. 2016

ChemistrySelect

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“…Similarly, in previous work, we synthesized PMMA-TiO 2 nanoparticle composites by pseudo-dispersion polymerization in supercritical CO 2 in the presence of 3-(trimethoxysilyl)propylmethacrylate (TPM)-modified TiO 2 nanoparticles [39]. The supercritical CO 2 -assisted preparation approaches of polymer/QDs composites were reported [40][41][42]. However, the PL (photoluminescence) properties of unmodified ZnO nanoparticle QDs were quenched in supercritical CO 2 .…”

Section: Introductionmentioning

confidence: 88%

Formation of poly(methyl methacrylate)-ZnO nanoparticle quantum dot composites by dispersion polymerization in supercritical CO2

Matsuyama¹,

Maeda²,

Matsuda³

et al. 2015

The Journal of Supercritical Fluids

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“…Supercritical CO 2 -assisted synthesis of an ultrasensitive amphibious quantum dot-molecularly imprinted sensor to BPA was reported by Lourenço et al [ 51 ] where CdTe quantum dots were previously synthesized and functionalized in a conventional way with mixed thiols, to confer both stability and reactivity. Then, the MIP containing the quantum dot was produced in scCO 2 , using MAA as functional monomer, EGDMA as crosslinker and BPA as template, by FRP.…”

Section: Green Strategies In Mip Developmentmentioning

confidence: 99%

Green Strategies for Molecularly Imprinted Polymer Development

2018

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Molecular imprinting is a powerful technology to create artificial receptors within polymeric matrices. Although it was reported for the first time by Polyakov, eighty-four years ago, it remains, nowadays, a very challenging research area. Molecularly imprinted polymers (MIPs) have been successfully used in several applications where selective binding is a requirement, such as immunoassays, affinity separation, sensors, and catalysis. Conventional methods used on MIP production still use large amounts of organic solvents which, allied with stricter legislation on the use and release of chemicals to the environment and the presence of impurities on final materials, will boost, in our opinion, the use of new cleaner synthetic strategies, in particular, with the application of the principles of green chemistry and engineering. Supercritical carbon dioxide, microwave, ionic liquids, and ultrasound technology are some of the green strategies which have already been applied in MIP production. These strategies can improve MIP properties, such as controlled morphology, homogeneity of the binding sites, and the absence of organic solvents. This review intends to give examples reported in literature on green approaches to MIP development, from nano-to micron-scale applications.

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Supercritical CO₂-assisted synthesis of an ultrasensitive amphibious quantum dot-molecularly imprinted sensor

Abstract: A green supercritical CO2-assisted molecular imprinting protocol enabled the production of smart sensory particles, incorporating quantum dots, with molecular recognition to bisphenol A at very low concentrations (4 nM).

Cited by 17 publications

References 27 publications

Molecular Weight Determination by Luminescent Chemo–enzymatics

Molecular Weight Determination by Luminescent Chemo–enzymatics

Formation of poly(methyl methacrylate)-ZnO nanoparticle quantum dot composites by dispersion polymerization in supercritical CO2

Green Strategies for Molecularly Imprinted Polymer Development

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Supercritical CO2-assisted synthesis of an ultrasensitive amphibious quantum dot-molecularly imprinted sensor

Abstract: A green supercritical CO2-assisted molecular imprinting protocol enabled the production of smart sensory particles, incorporating quantum dots, with molecular recognition to bisphenol A at very low concentrations (4 nM).

Cited by 17 publications

References 27 publications

Molecular Weight Determination by Luminescent Chemo–enzymatics

Molecular Weight Determination by Luminescent Chemo–enzymatics

Formation of poly(methyl methacrylate)-ZnO nanoparticle quantum dot composites by dispersion polymerization in supercritical CO2

Green Strategies for Molecularly Imprinted Polymer Development

Contact Info

Product

Resources

About

Supercritical CO₂-assisted synthesis of an ultrasensitive amphibious quantum dot-molecularly imprinted sensor