Adsorption of Histidine and a Histidine Tripeptide on Au(111) and Au(110) from Acidic Solution

Feyer, Vitaliy; Plekan, Oksana; Ptasińska, Sylwia; Iakhnenko, Marianna; Tsud, Nataliya; Prince, Kevin C.

doi:10.1021/jp307463z

Cited by 32 publications

(51 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The photoemission and photoabsorption spectra for cyclic dipeptides deposited on Au(111) and Cu(110) single crystals were recorded at the Material Science Beamline, Elettra in Trieste, using apparatus and calibration methods described in detail elsewhere [11][12][13][14]22]. at grazing incidence.…”

Section: Methodsmentioning

confidence: 99%

Cyclic dipeptide immobilization on Au(111) and Cu(110) surfaces

Plekan

Feyer

Ptasińska

et al. 2014

Phys. Chem. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

Soft X-ray Photoelectron Spectroscopy (XPS) and Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy have been used to probe the electronic and adsorption properties of two cyclic dipeptides, i.e. cyclo(glycyl-histidyl) and cyclo(phenylalanyl-prolyl), on Au(111) and Cu(110) surfaces. The core level spectra show chemical shifts which indicate weak chemisorption on Au(111), and stronger chemisorption on the Cu(110) surface, mainly via one of the nitrogen atoms in the central rings of both molecules, and nitrogen in the imidazole ring of cyclo(glycyl-histidyl). From the angular dependence of the NEXAFS spectra at the O and N K-edges, we conclude that both dipeptides have a preferred orientation on the two surfaces.

show abstract

Section: Methodsmentioning

confidence: 99%

Cyclic dipeptide immobilization on Au(111) and Cu(110) surfaces

Plekan

Feyer

Ptasińska

et al. 2014

Phys. Chem. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…From the N and O K-edge NEXAFS spectra measured at different incidence angles with respect to the surface, tilt angles of the IM ring and COO-triangle of ∼35° and ~27° with respect to the Au(111) surface, respectively, were deduced. We further mention that His/Au(111) and His/Au(110) were investigated by the same experimental means also to unravel the role of pH on the final adsorption form of His, when deposited from solution [241]. Finally, the work on polycrystalline films also evaluated the damage induced on the monolayer or multilayer His films by intense or prolonged X-ray exposure and the effect of water coadsorption [149].…”

Section: B) D-cysteine L-cysteinementioning

confidence: 99%

Adsorption and self-assembly of bio-organic molecules at model surfaces: A route towards increased complexity

Costa

Pradier

Tielens

et al. 2015

Surface Science Reports

View full text Add to dashboard Cite

Understanding the bio-physical-chemical interactions at nanostructured biointerfaces and the assembling mechanisms of so-called hybrid nano-composites is nowadays a keyissue for nanoscience in view of the many possible applications foreseen. The contribution of surface science in this field is noteworthy since, using a bottom-up approach, it allows the investigation of the fundamental processes at the basis of complex interfacial phenomena and thus it helps to unravelthe elementary mechanisms governing them. Nowadays it is well demonstrated that a wide variety of different molecular assemblies can form upon adsorption of small biomolecules at surfaces. The geometry of such self-organized structures can often be tuned by a careful control of the experimental conditions during the deposition process. Indeed an impressive number of studies exist (both experimental and -to a lesser extendtheoretical), which demonstrate the ability of molecular self-assembly to create different structural motifs in a more or less predictable manner, by tuning the molecular building blocks as well as the metallic substrate. In this frame, amino acidsand small peptides at surfaces are key, basic, systems to be studied. The amino acidsstructure is simple enough to serve as a model for the chemisorption of biofunctional molecules, but their adsorption at surfaces has applications in surface functionalization, in enantiospecific catalysis, biosensing, nanoparticles shape control or in emerging fields such as "green" corrosion inhibition. In this paper we review the most recent advancements in this field. We will start from amino acids adsorption at metal surfaces and we will evolve then in the direction of more complex systems, in thelight of the latest improvements of surface science techniques and of computational methods. On one side, we will focus on amino acids adsorption at oxide surfaces, on the other on peptide adsorption both at metal and oxide substrates. Particular attention will be drawn to the added value provided by the combination of several experimental surface science techniques and to the precious contribution of advanced complementary computational methods to resolve the details of systems of increased complexity. Finally, some hints into experiments performed in the presence of water and then characterized in UHV and in the related theoretical work will be presented. This is a further step towards abetter approximation of real biological systems. However, since the methods employed are often not typical of surface science, this topic is not developed in details.2

show abstract

“…The XP N 1s scan spectrum showed a broad peak, which was deconvoluted into two peaks with binding energies (BEs) of 400.1 and 401.5 eV (Figure 2 b). The N1s peak at 400.1 eV was assignable to the imino nitrogen atoms of the imidazole group,17 and the nitrogen atom from the triazole ring also contributed to this peak; the peak located at 401.5 eV was attributed to the remaining nitrogen atoms of the triazole ring 18a. A quantitative analysis of the data gave an estimate of the ratio of the grafted imidazole group to the CNTs (Im/C) as approximately 1:55 (see Table S1 in the Supporting Information).…”

mentioning

confidence: 99%

Covalent Grafting of Carbon Nanotubes with a Biomimetic Heme Model Compound To Enhance Oxygen Reduction Reactions

Wei

Naruta

et al. 2014

Angewandte Chemie

View full text Add to dashboard Cite

The oxygen reduction reaction (ORR) is one of the most important reactions in both life processes and energy conversion systems. The replacement of noble‐metal Pt‐based ORR electrocatalysts by nonprecious‐metal catalysts is crucial for the large‐scale commercialization of automotive fuel cells. Inspired by the mechanisms of dioxygen activation by metalloenzymes, herein we report a structurally well‐defined, bio‐inspired ORR catalyst that consists of a biomimetic model compound—an axial imidazole‐coordinated porphyrin—covalently attached to multiwalled carbon nanotubes. Without pyrolysis, this bio‐inspired electrocatalyst demonstrates superior ORR activity and stability compared to those of the state‐of‐the‐art Pt/C catalyst in both acidic and alkaline solutions, thus making it a promising alternative as an ORR electrocatalyst for application in fuel‐cell technology.

show abstract

Adsorption of Histidine and a Histidine Tripeptide on Au(111) and Au(110) from Acidic Solution

Cited by 32 publications

References 27 publications

Cyclic dipeptide immobilization on Au(111) and Cu(110) surfaces

Cyclic dipeptide immobilization on Au(111) and Cu(110) surfaces

Adsorption and self-assembly of bio-organic molecules at model surfaces: A route towards increased complexity

Covalent Grafting of Carbon Nanotubes with a Biomimetic Heme Model Compound To Enhance Oxygen Reduction Reactions

Contact Info

Product

Resources

About