Effect of matrix-nanoparticle interactions on recognition of aryldiazonium nanoparticle-imprinted matrices

Bruchiel-Spanier, Netta; Dery, Linoy; Tal, Noam; Dery, Shahar; Gross, Elad; Mandler, Daniel

doi:10.1007/s12274-018-2129-2

Cited by 9 publications

(34 citation statements)

References 49 publications

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“…Polarization-modulation infrared reflection-absorption spectroscopy (PM-IRRAS) is a vibrational technique that enables the detection of chemical functionalities and their orientation at submonolayer coverage. , Since PM-IRRAS requires a reflective surface (ideally Au surface), the ITO electrode was replaced by a flame-annealed Au electrode. The imprinting process was identical to that performed for ITO, and as seen previously, it did not alter the final composition or morphology of the electropolymerized layer. The PM-IRRAS spectrum of the electropolymerized CBD matrix reveals three peaks at 1417, 1612, and 1708 cm –1 assigned to carboxylic bending and CC and CO vibrations, respectively (Figure S8).…”

Section: Results and Discussionmentioning

confidence: 76%

“…Furthermore, the matrix should grow controllably from the surface to the solution, which implies that electrografting is an ideal approach for the formation of an electrically insulating matrix . We have already suggested the use of sol–gel electrodeposition, phenol, or aryldiazonium salt (ADS) electrografting . The latter is in particular convenient due to three reasons.…”

Section: Results and Discussionmentioning

confidence: 99%

“…All these results show that three CV curves in the CBD solution result in the formation of a layer, which covers approximately one-third of the NP diameter. We have previously shown that the NAIM layer thickness should not exceed the radius of the NPs to enable their removal by electrochemical dissolution …”

Section: Results and Discussionmentioning

confidence: 99%

“…The high selectivity achieved was primarily due to size exclusion. More recently, we have demonstrated that the nature of the matrix and its interaction with the imprinted NPs affect their recognition and play a major role. − NAIMs are envisioned to enable the assembly of either sensors or separation devices for NPs.…”

Section: Introductionmentioning

confidence: 99%

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Shell–Matrix Interaction in Nanoparticle-Imprinted Matrices: Implications for Selective Nanoparticle Detection and Separation

Zelikovich

Dery

Bruchiel-Spanier

et al. 2021

ACS Appl. Nano Mater.

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Nanoparticle-imprinted matrices (NAIMs) are an innovative approach for the efficient and selective recognition of nanoparticles (NPs). The NAIM system comprises the preparation of thin films in which NPs are embedded as a template. The removal of the template forms nanometric voids, which are subsequently used for the selective reuptake of NPs identical to those imprinted. The recognition ability depends on several parameters such as the geometrical compatibility between the voids and imprinted NPs, the thickness of the matrix, and the supramolecular interactions between the matrix and the NP capping agents. Herein, we studied carefully the NP−matrix interactions in three NAIM systems, which were prepared by imprinting identical-sized AuNPs, bearing different carboxylic acidfunctionalized thiols as capping agents, in a carboxylic acid-functionalized matrix. This experimental setup has enabled us to meticulously examine the selectivity of the NAIM systems driven by matrix−shell interactions. The three studied NAIM systems have shown high and selective reuptake ability once exposed to solutions of NPs stabilized with the same capping agent used for the imprinting process. In particular, the reuptake percentage of the originally imprinted AuNPs ranges from 50 to 80%, whereas the reuptake of AuNPs bearing different carboxylic capping agents than those imprinted was substantially lower (1−11%). Surfacesensitive polarization-modulation infrared reflection-absorption spectroscopy was utilized to correlate the selectivity of the NAIM systems and hydrogen bonding detected between the capping agents and the matrix. This study paves the way for the rational design of NAIM systems, which can be tuned according to the desired shell−matrix interactions and eventually applied in sensing and separation technologies.

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Section: Results and Discussionmentioning

confidence: 76%

Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shell–Matrix Interaction in Nanoparticle-Imprinted Matrices: Implications for Selective Nanoparticle Detection and Separation

Zelikovich

Dery

Bruchiel-Spanier

et al. 2021

ACS Appl. Nano Mater.

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“…Herein, we explore a novel strategy to detect nanoparticles by combining the concepts of inverse‐opal hydrogels and nanoparticle‐imprinted polymers . The latter concept extends the well‐known method of molecularly imprinted polymers to nanoparticle analytes.…”

Section: Figurementioning

confidence: 99%

Imprinted Photonic Hydrogels for the Size‐ and Shell‐Selective Recognition of Nanoparticles

et al. 2017

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Sensors based on responsive photonic hydrogels have recently attracted considerable attention for visual medical diagnostics, pharmaceutical bioassays, and environmental monitoring. However, the use of these promising materials for the detection of nanoparticles (NPs) has never been explored so far, although the sensing of nanoobjects is a rapidly evolving area of research. To address this issue, we have combined the concepts of inverse-opal hydrogels and nanoparticle-imprinted polymers. In this way, we could obtain a NP-imprinted photonic hydrogel consisting of a three-dimensional, highly ordered poly(methacrylic acid) macroporous array, in which nanocavities complementary to the target NPs, in this case colloidal quantum dots, are distributed. This novel type of NP-imprinted photonic hydrogel sensor was shown to display high sensitivity and selectivity, thus opening new prospects for the development of equipment-free and cost-efficient sensing devices for NPs.

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Electrochemical Detection of Silica Nanoparticles by Nanoparticle Imprinted Matrices

Dery

Sava²,

Mandler

2023

ChemElectroChem

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Nanoparticle (NP) toxicity is a severe environmental threat that calls for the development of novel field-effective platforms for NP detection and speciation according to their physicochemical properties. In this regard, nanoparticle-imprinted matrix (NAIM) is an innovative approach that enables the selective detection of NPs by their size, shape, surface chemistry, and composition. However, thus far, NAIM systems have mainly been used for detecting metallic NPs such as Au or Ag by electrochemical dissolution. Herein, we show that a facile electrochemical detection of non-conductive silica-NPs can be achieved by the NAIM approach. Specifically, the physical blocking of nanocavities was indirectly monitored by recording the redox activity of hexacyanoferrate(III) inside the nanocavities following exposure to silica-NPs using cyclic voltammetry (CV) and square wave voltammetry (SWV). This approach was examined for two different matrices based on phenol and 3-aminophenol monomers. Notably, we observed a dissimilar redox activity of hexacyanoferrate(III) upon reuptake, pointing to the importance of molecular interactions in NPs recognition. In addition, highspatial-resolution vibrational mapping was conducted by IR scattering-type scanning near-field optical microscopy (IR-sSNOM) imaging to characterize the physical entrapment of silica-NPs by the matrix in the nanoscale.

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Effect of matrix-nanoparticle interactions on recognition of aryldiazonium nanoparticle-imprinted matrices

Cited by 9 publications

References 49 publications

Shell–Matrix Interaction in Nanoparticle-Imprinted Matrices: Implications for Selective Nanoparticle Detection and Separation

Shell–Matrix Interaction in Nanoparticle-Imprinted Matrices: Implications for Selective Nanoparticle Detection and Separation

Imprinted Photonic Hydrogels for the Size‐ and Shell‐Selective Recognition of Nanoparticles

Electrochemical Detection of Silica Nanoparticles by Nanoparticle Imprinted Matrices

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