Electrochemical and electron spectroscopic investigations of iron surfaces modified with thiols

Volmer, M.; Stratmann, M.; Viefhaus, H.

doi:10.1002/sia.740160158

Cited by 109 publications

(61 citation statements)

References 4 publications

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“…The S2p photoemission spectra of sulfur in the neat wool were resolved into two peaks at 165.1 and 163.8 eV, corresponding to the value of S(2À). 22 For the silver-coated fibers, the S2p energy spectra of sulfur were shifted to lower energies and were resolved into three peaks at 164.2, 162.9, and 161.7 eV. The higher two energy peaks were similar to those of the neat wool fibers, and the third XPS band (at the lower energy) was attributed to the interaction between the sulfur atoms and silver nanoparticles.…”

Section: Xpsmentioning

confidence: 98%

Sonochemical deposition of silver nanoparticles on wool fibers

Hadad

Perkas

Gofer

et al. 2007

J of Applied Polymer Sci

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Silver nanoparticles were deposited on the surface of natural wool with the aid of powered ultrasound. The average particle size was 5-10 nm, but larger aggregates of 50-100 nm were also observed. The sonochemical irradiation of a slurry containing wool fibers, silver nitrate, and ammonia in an aqueous medium for 120 min under an argon atmosphere yielded a silver-wool nanocomposite. By varying the gas and reaction conditions, we could achieve control over the deposition of the metallic silver particles on the surface of the wool fibers. The resulting silver-deposited wool samples were characterized with X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, high-resolution scanning electron microscopy, electron-dispersive X-ray analysis, Brunauer, Emmett, and Teller physical adsorption method, X-ray photoelectron spectroscopy, and Raman and diffused reflection optical spectroscopy. The results showed that the strong adhesion of the silver to the wool was a result of the adsorption and interaction of silver with sulfur moieties related to the cysteine group.

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Section: Xpsmentioning

confidence: 98%

Sonochemical deposition of silver nanoparticles on wool fibers

Hadad

Perkas

Gofer

et al. 2007

J of Applied Polymer Sci

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“…The surface properties of such a film can be tailored by exchange of the methyl end group for other functional groups. This makes thiols promising candidates for various technical applications, e.g., adhesion links or passivating layers [16,17]. Furthermore, they are well suited as model systems to study the formation of organic films and to test new techniques with respect to their ability for monitoring interfacial chemistry.…”

Section: Alkyl Thiol Adsorptionmentioning

confidence: 99%

Organic chemistry at interfaces studied by optical second-harmonic and IR-vis sum-frequency generation

Buck

1992

Appl. Phys. A

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Abstract. Three selected systems are presented which demonstrate the versatility of second-order nonlinear techniques for interface analysis and thin film monitoring. With second-harmonic generation processes at buried interfaces can be monitored in real time as is shown by thiol adsorption on polycrystalline gold from solution. The time dependent second-harmonic signal shows a strong wavelength dependence due to resonances. In situ monitoring of thin-film formation by second-harmonic generation can differentiate between the reaction at the interface and the subsequent film growth. The chemical vapor deposition of polyamic acid is presented as example. Hydrogen adsorption on diamond C(111) is analysed by sum-frequency generation. It is demonstrated that sum-frequency generation has the sensitivity and specificity to trace chemical reactions at surfaces and to infer on the orientation of chemical bonds.

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“…The other end of the molecules (tail group) constitutes the exposed surface of the SAM. It is possible to form a variety of SAMs, for example, thiols form SAMs on metals such as gold [9], silver, copper, iron [10], platinum [11], and palladium [12]. They can also form on some compound semiconductors, such as InP and GaAs [13].…”

Section: A Self-assembled Monolayers (Sams) On Solid Substratesmentioning

confidence: 99%

Using self-assembly for the fabrication of nano-scale electronic and photonic devices

Parviz

Ryan

Whitesides

2003

IEEE Trans. Adv. Packag.

178

118

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Abstract-Challenges facing the scaling of microelectronics to sub-50 nm dimensions and the demanding material and structural requirements of integrated photonic and microelectromechanical systems suggest that alternative fabrication technologies are needed to produce nano-scale devices. Inspired by complex, functional, self-assembled structures and systems found in Nature we suggest that self-assembly can be employed as an effective tool for nanofabrication. We define a self-assembling system as one in which the elements of the system interact in pre-defined ways to spontaneously generate a higher order structure. Self-assembly is a parallel fabrication process that, at the molecular level, can generate three-dimensional structures with sub-nanometer precision. Guiding the process of self-assembly by external forces and geometrical constrains can reconfigure a system dynamically on demand. We survey some of the recent applications of self-assembly for nanofabrication of electronic and photonic devices. Five self-assembling systems are discussed: 1) self-assembled molecular monolayers; 2) self-assembly in supramolecular chemistry; 3) self-assembly of nanocrystals and nanowires; 4) self-assembly of phase-separated block copolymers; 5) colloidal self-assembly. These techniques can generate features ranging in size from a few angstroms to a few microns. We conclude with a discussion of the limitations and challenges facing self-assembly and some potential directions along which the development of self-assembly as a nanofabrication technology may proceed.

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Electrochemical and electron spectroscopic investigations of iron surfaces modified with thiols

Cited by 109 publications

References 4 publications

Sonochemical deposition of silver nanoparticles on wool fibers

Sonochemical deposition of silver nanoparticles on wool fibers

Organic chemistry at interfaces studied by optical second-harmonic and IR-vis sum-frequency generation

Using self-assembly for the fabrication of nano-scale electronic and photonic devices

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