Phenylboronic acid modified silver nanoparticles for colorimetric dynamic analysis of glucose

Cao, Ke; Jiang, Xiran; Yan, Suting; Zhang, Laiying; Wu, Weitai

doi:10.1016/j.bios.2013.08.046

Cited by 43 publications

(21 citation statements)

References 41 publications

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“…In a statistic analysis based on analysis of variance and graphical method (Fig. 10b), 66 )/2) is 0.09. Therefore, these results can not only provide further confirm on the high selectivity of the microgels, but also foreshadow a novel type of accurate sensing material for quantitative detection of ammonia in breath.…”

Section: Optical Detection Of Ammonia In Breathmentioning

confidence: 99%

Synthesis and characterization of ammonia-responsive polymer microgels

et al. 2015

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aWe report a type of polymer microgels that undergo rapid, reversible, and highly sensitive volume phase transitions upon varying ammonia concentrations in milieu. Such an ammonia-responsive microgel is made by tethering of a phenoxazinium, N-(5-(3-azidopropylamino)-9H-benzo[a]-phenoxazin-9-ylidene)-N-methylmethanaminium chloride, to the network chains of poly(N-isopropylacrylamide-co-propargyl acrylate) via copper(I)-catalyzed azide-alkene cycloaddition. Tethering of the ammonia-recognizable phenoxazinium onto polymer network chains makes the microgels responsive to ammonia. While a fast (<0.1 s) and stable shrinkage of the microgels can be reached upon adding ammonia over a clinically relevant range (0.25−2.9 ppm), the microgels can convert the elevated concentrations of the solution-/gas-phase ammonia into enhanced photoluminescence signals, which make the microgels different from the phenoxazinium or its analogs reported in previous arts that exhibit ammonia-induced quenching in photoluminescence. With the microgels as probes, the detection limit was ca. 7.3×10 -2 and 3.9 ppb, respectively, for the solution-and the gas-phase ammonia. These features enable "turn-on" photoluminescence detection of ammonia in breath.

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Section: Optical Detection Of Ammonia In Breathmentioning

confidence: 99%

Synthesis and characterization of ammonia-responsive polymer microgels

et al. 2015

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“…The fast pace development of nanotechnology has afforded new avenues towards the design of new materials and devices in chemical sensing [1,2], nanoelectronics [3,4], or optics [5][6][7][8]. At this length scale, size matters and the importance of one atom in electronical, chemical, and optical properties ranging in-between atomic and bulk ones is currently a hot topic [9].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Surface-Enhanced Raman Scattering Substrates Based on Immobilized Silver-Capped Nanoparticles

Caro

Gámez

Zaderenko

2018

Journal of Spectroscopy

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Novel results concerning surface-enhanced Raman scattering mediated by thiol-immobilized capped silver nanoparticles attached to a silicon Si(100) substrate are presented. The attachment of the nanoparticles is achieved by chemically modifying the surface of Si(100) in order to provide sulfhydryl groups covalently linked to the substrate and then covering these surfaces with bare and polymer-capped silver nanoparticles. The modified silicon substrate, the nanoparticles, and the sensors are characterized by means of infrared and UV-vis spectroscopies and electronic microscopies. The surface-enhanced Raman scattering intensity of the new films based on polymer-capped nanoparticles is compared with that obtained with silver bare nanoparticles using rhodamine 6G as a common chromophore. These results open a new route to the design of reversible and spot-to-spot reproducible surface-enhanced Raman scattering-based sensors supported by silver nanoparticles.

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“…The colorimetric assay is based on visual sensing of optical changes caused by the aggregation of the functionalized MNPs in the presence of specific analyte and has a wide range of applications ranging from environmental detection of toxic metals [17], to clinical diagnosis of analytes, such as glucose [191, 192], cancer biomarkers [193], and even viruses [194]. Figure 7 illustrates preparation of the GQDS/AgNP hybrid and colorimetric glucose detection process based on the color change of the hybrid.…”

Section: The Functions Of Mnps In Various Biosensor Typesmentioning

confidence: 99%

Noble metal nanoparticles in biosensors: recent studies and applications

Malekzad

Zangabad

Mirshekari

et al. 2017

Nanotechnology Reviews

287

119

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The aim of this review is to cover advances in noble metal nanoparticle (MNP)-based biosensors and to outline the principles and main functions of MNPs in different classes of biosensors according to the transduction methods employed. The important biorecognition elements are enzymes, antibodies, aptamers, DNA sequences, and whole cells. The main readouts are electrochemical (amperometric and voltametric), optical (surface plasmon resonance, colorimetric, chemiluminescence, photoelectrochemical, etc.) and piezoelectric. MNPs have received attention for applications in biosensing due to their fascinating properties. These properties include a large surface area that enhances biorecognizers and receptor immobilization, good ability for reaction catalysis and electron transfer, and good biocompatibility. MNPs can be used alone and in combination with other classes of nanostructures. MNP-based sensors can lead to significant signal amplification, higher sensitivity, and great improvements in the detection and quantification of biomolecules and different ions. Some recent examples of biomolecular sensors using MNPs are given, and the effects of structure, shape, and other physical properties of noble MNPs and nanohybrids in biosensor performance are discussed.

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Phenylboronic acid modified silver nanoparticles for colorimetric dynamic analysis of glucose

Cited by 43 publications

References 41 publications

Synthesis and characterization of ammonia-responsive polymer microgels

Synthesis and characterization of ammonia-responsive polymer microgels

Preparation of Surface-Enhanced Raman Scattering Substrates Based on Immobilized Silver-Capped Nanoparticles

Noble metal nanoparticles in biosensors: recent studies and applications

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