UV/Vis Spectroelectrochemical Evidence of Rectification of Quantized Charging in Monolayer‐Protected Gold Cluster Films

Ruiz, Virginia; Colina, Álvaro; Heras, Aránzazu; López-Palacios, Jesús

doi:10.1002/smll.200500293

Cited by 11 publications

(15 citation statements)

References 22 publications

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“…MALDI mass spectrometry analysis indicated that Au 54 (C 2 Ph) 26 was selectively formed when using chloroform (Figure 1b), whereas Au:C 2 Ph prepared using toluene contained clusters with different compositions (Figure 1a). 10 We next show the effect of the initial size of Au clusters in PVP on the size distribution of Au:C 2 Ph. Figure 2 shows MALDI mass spectra of Au:C 2 Ph obtained from Au:PVP (1a-1c) under chloroform-water biphasic condition.…”

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confidence: 99%

Selective synthesis of organogold magic clusters Au54(CCPh)26

et al. 2012

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Organogold clusters Au 54 (C 2 Ph) 26 were selectively synthesized by reacting of polymer-stabilized Au clusters (1.2±0.2 nm) with excess phenylacetylene in chloroform.Recent studies have shown that gold clusters protected by ligands (phosphines and thiolates) exhibit unique optical, 10 electrochemical, magnetic, and catalytic properties. 1-7 Such ligand-protected Au clusters have poteintial applications in diverse fields including catalysis, 7-9 nanoscale electronics, 10-16 drug delivery, 17 molecular biology, 18-20 and surface patterning. 21,22 State-of-the-art precision synthesis, theoretical 15 calculations, and single-crystal structure determination have shown that the novel properties of these clusters are associated with cluster substructures, namely the Au core, the ligands, and their interface. Therefore, to design and tune the properties of ligand-protected Au clusters, it is crucial to control the structures 20 of individual substructures; specifically the number of constituent atoms and the geometric structure of the Au core, the interfacial structure between the Au core and the ligands, and the physicochemical properties of the ligands.In this regard, an interesting challenge is to produce new

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confidence: 99%

Selective synthesis of organogold magic clusters Au54(CCPh)26

et al. 2012

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“…SEC joins the best of electrochemistry and spectroscopy together during an electron‐transfer process. As can be inferred, this multiresponse and “teamwork” technique has been used in a large number of fields, including, for example, electron transfer processes , chemical reaction mechanisms , side reactions , electrocatalysis , corrosion , conducting polymers , solar cells , memory devices , supercapacitors , synthesis and characterization of nanoparticles , carbon nanomaterials , characterization of metal complexes , liquid/liquid interfaces , electrochromic materials or study of compounds of biological interest , among others.…”

Section: Whatmentioning

confidence: 99%

“…From this point of view, SEC is a really powerful analytical technique. SEC can be used with many different purposes, and excellent examples can be found in literature in different fields such as organic molecules , molecules of biological interest , inorganic complexes , conducting polymers , carbon nanotubes , graphene , fullerenes , metal nanoparticles , quantum dots , etc. A huge variety of information can be obtained using SEC, for example, formal potentials , electron transfer rate constants , diffusion coefficients , number of electrons , molar absorption coefficients , band‐gaps , among many others.…”

Section: Whymentioning

confidence: 99%

Spectroelectrochemical Sensing: Current Trends and Challenges

et al. 2019

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Spectroelectrochemistry (SEC) has been used for more than 50 years, but this set of techniques has not been widely used for quantitative analysis. For many years, no commercial instruments were available, which made very difficult to spread the use of SEC. Nowadays, only the creativity of the researchers is required to exploit the capabilities of SEC. This review is written with the aim of showing the potential of SEC, mainly for analytical chemistry. Here, we explain what SEC is, how analytical responses can be obtained, why these techniques are useful for sensors, with a brief description of its advantages in use, and, finally, we try to show the challenges that must be addressed in the next years. SEC can resolve interesting analytical problems using the high amount of data provided by this intrinsic trilinear technique. Given the quantitative analysis point of view of this review, the discussion of the SEC techniques is focused on UV/Vis absorption, photoluminescence and Raman SEC.

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“…The variety of existing electrochemical and spectroscopic techniques has enabled new and interesting combinations suitable to study different types of chemical systems [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%