نتایج جستجو برای: thiophenol

تعداد نتایج: 220  

Journal: :Journal of the American Chemical Society 2009
Ilsun Yoon Taejoon Kang Wonjun Choi Jangbae Kim Youngdong Yoo Sang-Woo Joo Q-Han Park Hyotcherl Ihee Bongsoo Kim

Fabricating well-defined and highly reproducible platforms for surface-enhanced Raman scattering (SERS) is very important in developing practical SERS sensors. We report a novel SERS platform composed of a single metallic nanowire (NW) on a metallic film. Optical excitation of this novel sandwich nanostructure provides a line of SERS hot spots (a SERS hot line) at the gap between the NW and the...

Journal: :The Journal of biological chemistry 1962
G D AURBACH W B JAKOBY

Strains of P. oryxae were cultured, and crude filtrates of culture medium were prepared as described by Neufeld et al. (2). Protein was measured by the method of Lowry et al. (3). Assays--The increase in absorbancy at 320 rnp due to the formation of diphenyl disulfide was used to measure thiooxidase activity with thiophenol as substrate. The reaction rate was linear and proportional to enzyme c...

2015
Myoung-Kyu Oh Yong-Seok Shin Chang-Lyoul Lee Ranjit De Hoonsoo Kang Nan Ei Yu Bok Hyeon Kim Joon Heon Kim Jin-Kyu Yang

Aligned silver nanorod (AgNR) array films were fabricated by oblique thermal evaporation. The substrate temperature during evaporation was varied from 10 to 100 °C using a home-built water cooling system. Deposition angle and substrate temperature were found to be the most important parameters for the morphology of fabricated films. Especially, it was found that there exists a critical temperat...

Journal: :Physical chemistry chemical physics : PCCP 2013
Stephanie J Harris Daniel Murdock Yuyuan Zhang Thomas A A Oliver Michael P Grubb Andrew J Orr-Ewing Gregory M Greetham Ian P Clark Michael Towrie Stephen E Bradforth Michael N R Ashfold

This article explores the extent to which insights gleaned from detailed studies of molecular photodissociations in the gas phase (i.e. under isolated molecule conditions) can inform our understanding of the corresponding photofragmentation processes in solution. Systems selected for comparison include a thiophenol (p-methylthiophenol), a thioanisole (p-methylthioanisole) and phenol, in vacuum ...

Journal: :The journal of physical chemistry. B 2005
Adam D McFarland Matthew A Young Jon A Dieringer Richard P Van Duyne

A detailed wavelength-scanned surface-enhanced Raman excitation spectroscopy (WS SERES) study of benzenethiol adsorbed on Ag nanoparticle arrays, fabricated by nanosphere lithography (NSL), is presented. These NSL-derived Ag nanoparticle array surfaces are both structurally well-characterized and extremely uniform in size. The WS SERES spectra are correlated, both spatially and spectrally, with...

Journal: :Nanoscale 2014
Gangaiah Mettela Soumik Siddhanta Chandrabhas Narayana Giridhar U Kulkarni

In this paper, the synthesis of Ag microflowers for use as manipulable and reusable substrates in surface enhanced Raman spectroscopy (SERS) is demonstrated, working with ultra-low volumes of the analyte. Flower-like AgBr crystallites with a growth direction of 〈110〉 were first obtained by thermolysing a complex obtained by the stabilization of (AgCl2)(-) anions with tetraoctylammonium bromide....

Journal: :Physical chemistry chemical physics : PCCP 2009
Semion K Saikin Roberto Olivares-Amaya Dmitrij Rappoport Michael Stopa Alán Aspuru-Guzik

We study the effects of chemical bonding on Raman scattering from benzenethiol chemisorbed on silver clusters using time-dependent density functional theory (TDDFT). Raman scattering cross sections are computed using a formalism that employs analytical derivatives of frequency-dependent electronic polarizabilities, which treats both off-resonant and resonant enhancement within the same scheme. ...

Journal: :Dalton transactions 2015
Amélie Kochem Gisèle Gellon Olivier Jarjayes Christian Philouze Amaury du Moulinet d'Hardemare Maurice van Gastel Fabrice Thomas

The nickel(ii) complexes of three unsymmetrical thiosemicarbazone-based ligands featuring a sterically hindered salicylidene (1), aminophenol (2) or thiophenol (3) moiety were synthesized and structurally characterized. The metal ion lies in an almost square planar geometry in all the complexes. The cyclic voltammetry (CV) curve of 1 shows an irreversible oxidation wave at E = 0.49 V, which is ...

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