Electroless methods for molecular doping of gold thin films

Naor, Hadas; Avnir, David

doi:10.1039/c4tc00992d

Cited by 15 publications

(18 citation statements)

References 35 publications

(37 reference statements)

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“…They also developed electroless based deposition to grow hybrid films of metal aggregates entrapping molecular guests. [494] Such structure can lead to rather homogeneous hybrid films with very interesting properties such as enhanced Raman response. They also interestingly showed that they were able to recover part of the emission of the Rhodamine.…”

Section: Encapsulation Of Dyes In Metalsmentioning

confidence: 99%

“…They also interestingly showed that they were able to recover part of the emission of the Rhodamine. [494] Such optical systems are Figure 43. Suggested structure of molecularly doped metals (left).…”

Section: Encapsulation Of Dyes In Metalsmentioning

confidence: 99%

“…Avnir and co-workers have introduced original ways to entrap molecular dyes into different metals (Ag, Au, Cu, Fe). [152,[488][489][490][491][492][493][494][495] Indeed they generate the metal nanoparticles in the presence of the molecular guest and induce nanoaggregations entrapping the guests (Figure 43). They also developed electroless based deposition to grow hybrid films of metal aggregates entrapping molecular guests.…”

Section: Encapsulation Of Dyes In Metalsmentioning

confidence: 99%

See 2 more Smart Citations

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Parola

Julián‐López

Carlos

et al. 2016

Adv Funct Materials

244

116

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Research on hybrid inorganic‐organic materials has experienced an explosive growth since the 1980s, with the expansion of soft inorganic chemistry based processes. Indeed, mild synthetic conditions, low processing temperatures provided by “chimie douce” and the versatility of the colloidal state allow for the mixing of the organic and inorganic components at the nanometer scale in virtually any ratio to produce the so called hybrid materials. Today a high degree of control over both composition and nanostructure of these hybrids can be achieved allowing tunable structure‐property relationships. This, in turn, makes it possible to tailor and fine‐tune many properties (mechanical, optical, electronic, thermal, chemical…) in very broad ranges, and to design specific multifunctional systems for applications. In particular, the field of “Hybrid‐Optics” has been very productive not only scientifically but also in terms of applications. Indeed, numerous optical devices based on hybrids are already in, or very close, to the market. This review describes most of the recent advances performed in this field. Emphasis will be given to luminescent, photochromic, NLO and plasmonic properties. As an outlook we show that the controlled coupling between plasmonics and luminescence is opening a land of opportunities in the field of “Hybrid‐Optics”.

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Section: Encapsulation Of Dyes In Metalsmentioning

confidence: 99%

Section: Encapsulation Of Dyes In Metalsmentioning

confidence: 99%

Section: Encapsulation Of Dyes In Metalsmentioning

confidence: 99%

See 1 more Smart Citation

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Parola

Julián‐López

Carlos

et al. 2016

Adv Funct Materials

244

116

View full text Add to dashboard Cite

show abstract

“…The reflection peaks at 2θ value of 38.62°, 44.8°, 65°, 80°, and 82.2° correspond to (111), (200), (220), (311), and (222) reflection plane, indicating characteristics of face‐centered cubic Au, while Gd‐CoB does not show any apparent diffraction peak. [ 26 ] The XRD results further confirm the amorphous nature of the Gd‐CoB film. The thickness of nanosheets was further characterized by the atomic force microscopy technique (AFM).…”

Section: Resultsmentioning

confidence: 63%

Gold‐Supported Gadolinium Doped CoB Amorphous Sheet: A New Benchmark Electrocatalyst for Water Oxidation with High Turnover Frequency

Haq

Mansour

Munir

et al. 2020

Adv Funct Materials

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Electrochemical water splitting has been considered a promising approach for green and sustainable hydrogen as a future energy carrier. However, the lack of high performance and inexpensive electrocatalysts for kinetically sluggish oxygen evolution reaction (OER) hinder the practical application. Here, the noteworthy enhancement of electrodeposited cobalt boride (CoB) nanosheets from the combined effect of using gadolinium as a dopant and thin film of gold as prudent support is demonstrated. The free-standing Gd-CoB@Au exhibits remarkable electrochemical performance, high intrinsic activity, and lower reaction resistance, which are confirmed by lower onset potential, small charge transfer resistance, lower Tafel slope value, and high turnover frequency. Furthermore, the post-OER characterization signpost, no observable change in the chemical structure or morphology of nanosheets during the long-lasting oxidation process. Because of the inexpensive, facile, and scalable one-step preparation processes, the catalyst is highly encouraging for large-scale practical applications.in pursuing toward viable electrochemical water splitting module. [1] The HER follows a relatively simple mechanism and various cost-effective and efficient metal/ alloy-based catalysts have been developed to produce hydrogen at fairly low overpotential. [2] A serious challenge, however, is the slow rate of multistep OER, which requires high activation energy and thus large overpotential to break OH bond, and to form an OO bond and transfer 04 electrons essentially required for oxygen evolution from two water molecules at the same time. [3] The slow rate of OER in turn adversely affects the overall rate of water splitting for hydrogen production. [4] It is, therefore, essentially required to develop stable, economical, and effective electrocatalysts for OER for the feasible production of H 2 by water splitting. Currently, IrO 2 and RuO 2 are the benchmark OER catalysts to significantly improve slow kinetics of oxygen evolution at the anode. These electrocatalysts are made up of expensive precious metals, and their supply is not sustainable and is, therefore, not much suitable for large-scale applications in water oxidation systems. [5] Besides precious metals, several costeffective nanoscale materials including layer double hydroxides, perovskite, amorphous/crystalline metal hydroxides have been extensively explored for OER. [6][7][8] Hence, it is well established, that nano-structuring is one of the widely adopted strategies to enhance the catalytic properties and selectivity, toward the OER for practical application. [9] However, low mass loading of catalyst, mechanical and chemical instability, less exposed surface area, reproducibility, potentially induced phase/electronic transformation during catalysis, surface leaching of the catalyst due to the low adhesion of catalyst are still serious concerns that need to be addressed. [10] Also, the use of powder nanomaterials traditionally needs various binders (Nafion/polymers) for the fabricati...

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“…Utilization of metal nanoparticles (NPs) in the enhancement of fluorescence emission was widely described in literature; however, the main emphasis was often put to the organic or inorganic modified compounds interacting with metal nanoparticles [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18]. The hybrid systems are often devoted to imaging with assistance of gold nanoparticles [19], cancer treatments [20], where NPs introduced to the cancer tissue are responsible for thermolysis of tumor by selective laser irradiation [21,22], sensing or photovoltaics [7,23].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Nanoparticles Driven Enhanced Light Amplification in a Local 2D and 3D Self-Assembly

et al. 2018

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We present fluorescence and a random lasing enhancement effect due to the interaction between gold nanoparticles (AuNPs) and Rhodamine 6G (Rh6G) dye. Non-covalently bounded dyes in the proximity of nanoparticles are studied in three systems of varying dimensionality: from (i) three-dimensional freely distributed suspensions, through (ii) quasi-two-dimensional multilamellar liposomes, to (iii) solid two-dimensional thin layers. Liposomes facilitate the formation of stable AuNPs/Rh6G composition showing enhanced fluorescence, while solid thin films exhibit plasmon-assisted random lasing.

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Electroless methods for molecular doping of gold thin films

Cited by 15 publications

References 35 publications

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Gold‐Supported Gadolinium Doped CoB Amorphous Sheet: A New Benchmark Electrocatalyst for Water Oxidation with High Turnover Frequency

Plasmonic Nanoparticles Driven Enhanced Light Amplification in a Local 2D and 3D Self-Assembly

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