Application of electron spectroscopy for chemical analysis to the study of ambidentate binding in sulfoxide complexes

Su, Chan-Cheng; Faller, J. W.

doi:10.1021/ic50137a040

Cited by 36 publications

(7 citation statements)

References 9 publications

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“…In the latter case, as compared to a noninteracting molecule, an increase in the binding energy of the donating atom is expected. On these bases, in an early paper, Su and Faller measured the difference between the O 1s and S 2p binding energies, Δ E b , for several metal–DMSO complexes, attempting to determine from this quantity whether the metal–molecule bonding occurred through the oxygen atom, the sulfur atom, or both. This method was adopted to rationalize the XPS data for the adsorption of DMSO on Au(100) and Pt(111), , where bi- and monodentate configurations have been found, respectively.…”

Section: Resultsmentioning

confidence: 99%

Trapping of Charged Gold Adatoms by Dimethyl Sulfoxide on a Gold Surface

et al. 2015

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We report the formation of dimethyl sulfoxide (DMSO) molecular complexes on Au(111) enabled by native gold adatoms unusually linking the molecules via a bonding of ionic nature, yielding a mutual stabilization between molecules and adatom(s). DMSO is a widely used polar, aprotic solvent whose interaction with metal surfaces is not fully understood. By combining X-ray photoelectron spectroscopy, low temperature scanning tunneling microscopy, and density functional theory (DFT) calculations, we show that DMSO molecules form complexes made by up to four molecules arranged with adjacent oxygen terminations. DFT calculations reveal that most of the observed structures are accurately reproduced if, and only if, the negatively charged oxygen terminations are linked by one or two positively charged Au adatoms. A similar behavior was previously observed only in nonstoichiometric organic salt layers, fabricated using linkage alkali atoms and strongly electronegative molecules. These findings suggest a motif for anchoring organic adlayers of polar molecules on metal substrates and also provide nanoscale insight into the interaction of DMSO with gold.

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Section: Resultsmentioning

confidence: 99%

Trapping of Charged Gold Adatoms by Dimethyl Sulfoxide on a Gold Surface

et al. 2015

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“…The O 1s spectrum of nanoparticles produced in deoxygenated water (blue circles) demonstrates an appearance of a peak at 531 eV, which can be assigned to OH À groups. 44,45 However, when the nanoparticles are produced by fragmentation in air-saturated water (red circles), the O 1s spectrum is dominated by a peak at 533.6 eV, which corresponds to SiO 2 conguration. 46,47 Thus, our tests show that the thickness of the SiO 2 shell for Si nanoparticles can be controlled by varying the concentration of dissolved molecular oxygen in water.…”

Section: Resultsmentioning

confidence: 99%

Femtosecond laser fragmentation from water-dispersed microcolloids: toward fast controllable growth of ultrapure Si-based nanomaterials for biological applications

et al. 2013

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International audienceAn ultrashort laser-assisted method for fast production of concentrated aqueous solutions of ultrapure Si-based colloidal nanoparticles is reported. The method profits from the 3D geometry of femtosecond laser ablation of water-dispersed microscale colloids, prepared preliminarily by the mechanical milling of a Si wafer, in order to avoid strong concentration gradients in the ablated material and provide similar conditions of nanocluster growth within a relatively large laser caustics volume. We demonstrate the possibility for the fast synthesis of non-aggregated, low-size-dispersed, crystalline Si-based nanoparticles, whose size and surface oxidation can be controlled by changing the initial microcolloid concentration and the amount of dissolved oxygen in the water. Due to their much superior purity compared to the chemically synthesized counterparts and their photoluminescence response, the nanoparticles present the possibility for biological in vivo applications such as drug vectoring, imaging, and therapeutics

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“…Figure 1B presents S 2p spectrum of PEO/PEG‐3LGPS which includes the characteristic peaks of SP, SGe from LGPS and that of SC, SN, SO assigned to LiTFSI. [ 30–34 ] Figure 1C shows Si 2p spectrum and two components appear: one at low binding energy around 102.1 eV related to Si–C which is the result of reaction between CMTS and PEG, another at higher binding energy about 103.2 eV related to Si–S which is also detected in S 2p spectrum (Figure 1B) and provides a strong proof of reaction between CMTS and LGPS. [ 35–37 ] That is to say, LGPS and PEG is becoming a unified whole linked by the chemical bonds that formed by reacting with CTMS.…”

Section: Figurementioning

confidence: 98%

A Flexible Ceramic/Polymer Hybrid Solid Electrolyte for Solid‐State Lithium Metal Batteries

et al. 2020

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increased and the energy transform efficiency decreased. For the SPEs in which the Li + are transport by moieties on the polymer chain, their ionic conductivity and electrochemical stability is restricted by the polymer structure, typically, polyethylene oxide (PEO) based SPEs only working in high temperature above 60 °C and at low voltage of below 4.0 V.Ceramic/polymer hybrid solid electrolyte (HSE) is a promising material by combining the advantages of both types of electrolytes, typical HSEs are composed of polymers to enhance the electrode/ electrolyte interfacial compatibility and inorganic fillers to adjust the ionic transportability. [8][9][10][11][12][13][14][15][16][17][18] The fillers could be metal oxides, such as Al 2 O 3 , [10] SiO 2 , [11,12] TiO 2 , [13] and Fe 2 O 3 [14] or fast Li + conductors, such as Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), [15] LLZO, [16,17] and LGPS, [18] the materials can not only reduce the polymer matrix crystallinity, but also provide extra diffusion routes for Li + , thus enhance the overall performance of the electrolyte. Mechanical mixing is the most common method to obtain the HSE, and it is convenient and cost-effective. However, the composite electrolyte obtained by this method often shows poor uniformity and the fillers are fail to form interconnected Li + conduct channels, on which ionic conductivity of the composites cannot be enhanced effectively. [11] The other issue bring about by mechanical mixing is the organic/inorganic electrolyte interfacial compatibility, as ions inclined to flow along the low resistance pathways, [6,19] local difference in conductivity may lead to strong space charge layer at the interphase and cause polymer oxidation. Many methods were attempted to optimize this interphase compatibility such as reducing particle size of ceramic, [20,21] making the ceramic fillers orderly, and higher dimension. [22,23] But such problem still exists and the interfacial compatibility cannot be neglected. Making chemical bond is a new strategy to resolve the issue of interface. [24][25][26] Nan's group utilized the catalysis of La in dehydrofluorination and prepared poly(vinylidenefluoride) (PVDF)-Li 6.75 La 3 Zr 1.75 Ta 0.25 O 12 (LLZTO) HSE whose ionic conductivity is as high as 5 × 10 −4 S cm −1 at 25 °C. [26] But this strategy can only be applied to those polymers consisting of H and F in neighbor carbon atoms such as PVDF or poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) [24] which cannot contribute to ionic transport. Archer's group proposed a more universal method by preparing a kind of soft colloidal glasses HSE that PEO chains were covalently grafted onto silica nanoparticles. The HSE works stable in high-voltage nickel cobalt manganese Ceramic/polymer hybrid solid electrolytes (HSEs) have attracted worldwide attentions because they can overcome defects by combining the advantages of ceramic electrolytes (CEs) and solid polymer electrolytes (SPEs). However, the interface compatibility of CEs and SPEs in HSE limits their full function to...

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Application of electron spectroscopy for chemical analysis to the study of ambidentate binding in sulfoxide complexes

Cited by 36 publications

References 9 publications

Trapping of Charged Gold Adatoms by Dimethyl Sulfoxide on a Gold Surface

Trapping of Charged Gold Adatoms by Dimethyl Sulfoxide on a Gold Surface

Femtosecond laser fragmentation from water-dispersed microcolloids: toward fast controllable growth of ultrapure Si-based nanomaterials for biological applications

A Flexible Ceramic/Polymer Hybrid Solid Electrolyte for Solid‐State Lithium Metal Batteries

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