Pillar[5]arene‐Mediated Synthesis of Gold Nanoparticles: Size Control and Sensing Capabilities

Montes‐García, Verónica; Fernández‐López, Cristina; Gómez, Borja; Pérez‐Juste, Ignacio; García‐Río, Luis; Liz‐Marzán, Luis M.; Pérez‐Juste, Jorge; Pastoriza‐Santos, Isabel

doi:10.1002/chem.201402073

Cited by 46 publications

(47 citation statements)

References 36 publications

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“…Recently, Montes-García et al reported the synthesis of quasi-spherical Au nanoparticles in a wide size range, up to 120 nm in diameter through a seeded growth method using a water-soluble pillar [5]arene bearing ammonium groups (hereafter ammonium pillar [5]arene or AP[5]A) (Figure 11). [62] The pillar [5]arene tethered with water soluble ammonium groups could form a complex with the Au salt to avoid Au nucleation. They have proven that the AP [5]A is adsorbed onto the quasi-spherical Au nanoparticles with the pillar [5]arene cavity perpendicularly oriented to the metal surface.…”

Section: Pillararene-involved Metal Nanoparticlesmentioning

confidence: 99%

Pillarene‐Involved Metallic Supramolecular Nanostructures

2015

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Pillarenes (or pillararenes), as a new and rapidly developing class of covalent macrocycles, have stimulated a tremendous upsurge of interest in supramolecular chemistry because of their unique features and potentials in fabricating functional materials. In addition, metallo-supramolecular chemistry has grown steadily over the last few decades. The presence of metal in supramolecular architectures enables the systematic tuning of their properties and endows them with optical, magnetic, and electric etcetera unusual properties. The marriage of these two fields offers new possibilities for the fabrication of novel functional materials and devices. This review article provides an overview of recent advancements on pillararene-based metallic supramolecular assemblies. The fabrication and functionalities of pillararene-decorated metallic macrocycles, metal-organic frameworks (MOFs), and metal nanoparticles are comprehensively summarized and discussed.

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Section: Pillararene-involved Metal Nanoparticlesmentioning

confidence: 99%

Pillarene‐Involved Metallic Supramolecular Nanostructures

2015

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“… Schematic representation of the different approaches for macrocycle‐stabilized metal nanoparticle synthesis: A) Thiacalixarenes as reductant and stabilizer; B) seeded‐growth approach based on pillararenes; and C) post‐synthetic surface modification based on thiol containing macrocycles. Adapted with permission from references 19, 28, 35, respectively. …”

Section: Synthesis and Surface Modification Of Metal Nanoparticlesmentioning

confidence: 99%

“…Recently, Montes‐García et al. proposed the synthesis of quasi‐spherical Au nanoparticles in a wide size range, up to 120 nm in diameter, through a seeded growth method using a water‐soluble pillar[5]arene bearing ammonium groups (Figure 2B) 28. This pillar[5]arene was found to complex the gold salt precursor thereby preventing Au nucleation.…”

Section: Synthesis and Surface Modification Of Metal Nanoparticlesmentioning

confidence: 99%

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Metal Nanoparticles and Supramolecular Macrocycles: A Tale of Synergy

Montes‐García

Pérez‐Juste

Pastoriza‐Santos

et al. 2014

Chemistry A European J

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125

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In this minireview, we summarize current research dealing with the combination of noble-metal nanoparticles and different families of supramolecular macrocycles (cyclodextrins, cucurbit[n]urils, calixarenes, and pillar[n]arenes). We intended to select relevant publications on the synthesis of noble-metal nanoparticles with macrocycles acting as capping agents or/and reducing agents, as well as on the post-synthetic metal-nanoparticle modification with macrocycles. We also discuss strategies in which supramolecular chemistry is applied to direct the self-assembly of nanoparticles and formation of polymer composites. We finally describe the main applications of these materials in various fields.

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“…Upon the external stimulus application the polymer coating collapsed and the analyte would be brought into contact with [ [20] Host-guest interactions mediated by supramolecular chemistry has been also proposed to develop novel SERS sensing strategies. [21][22][23] Cyclodextrins, calixarenes, cucurbiturils, or pillararenes are important building blocks within supramolecular chemistry. [24][25] These macrocyclic molecules can be often straightforward synthesized in high yield and short reaction times.…”

Section: Introductionmentioning

confidence: 99%

Pillar[5]arene‐stabilized Plasmonic Nanoparticles as Selective SERS Sensors

Rodal‐Cedeira

Cordero-Ferradás

Gómez

et al. 2018

Israel Journal of Chemistry

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We present here a simple procedure for the surface modification of plasmonic nanoparticles (NPs) with a cationic water-soluble ammonium pillar[5]arene (AP[5]A) in order to create selective surface-enhanced Raman scattering (SERS) spectroscopy based sensors. The strategy is based on a ligand exchange reaction between the AP[5]A and the stabilizing agent of the as-prepared plasmonic NPs. The approach could be applied to plasmonic nanoparticles either negatively charged, stabilized by citrate ions (Au spheres) or positively charged, stabilized by cetyltrimethylammonium bromide (Au and Au@Ag nanorods). The SERS performance of all systems was studied as a function of NP size and excitation laser line by using an analyte with no affinity towards the metal surface such as pyrene. The analytical enhancement factor (AEF) for the different systems was estimated between 0.55 3 10 4 and 1.49 3 10 5 . Finally the synergistic effect of combining supramolecular chemistry and plasmonic NPs is demonstrated through SERS-based detection, in aqueous media, of molecules with no affinity towards a bare plasmonic substrate such as the contaminant pyrene or the biomolecule pyocyanin with nanomolar limit of detection.

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Pillar[5]arene‐Mediated Synthesis of Gold Nanoparticles: Size Control and Sensing Capabilities

Cited by 46 publications

References 36 publications

Pillarene‐Involved Metallic Supramolecular Nanostructures

Pillarene‐Involved Metallic Supramolecular Nanostructures

Metal Nanoparticles and Supramolecular Macrocycles: A Tale of Synergy

Pillar[5]arene‐stabilized Plasmonic Nanoparticles as Selective SERS Sensors

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