Preparation and Interfacial Properties of Phosphonic Acid-Terminated Self-Assembled Monolayers on Gold Surface

2009 ◽  
Vol 113 (11) ◽  
pp. 4515-4521 ◽  
Author(s):  
Yu Chen ◽  
Xiao-Jing Yang ◽  
Bo Jin ◽  
Li-Rong Guo ◽  
Li-Min Zheng ◽  
...  
Keyword(s):  
Phosphonic Acid ◽  
Gold Surface ◽  
Interfacial Properties ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled

Self-Assembled Monolayers of Heme Derivatives on a Gold Surface

2000 ◽  
Vol 73 (9) ◽  
pp. 1993-2000 ◽  
Author(s):  
Kazutoshi Kobayashi ◽  
Shin'ichiro Imabayashi ◽  
Katsuhiko Fujita ◽  
Kazuhide Nonaka ◽  
Takashi Kakiuchi ◽  
...  
Keyword(s):  
Gold Surface ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled

Spectral and cyclic voltammetric characterization of self-assembled monolayers on gold of pyrene end-labeled oligonucleotide duplexes

1999 ◽  
Vol 77 (5-6) ◽  
pp. 1077-1084 ◽  
Author(s):  
R Scott Reese ◽  
Marye Anne Fox
Keyword(s):  
Gold Surface ◽  
Self Assembled Monolayers ◽  
Self Assembled Monolayer ◽  
Surface Emission ◽  
Assembled Monolayers ◽  
Oligonucleotide Duplex ◽  
Self Assembled ◽  
Duplex Formation

Self-assembled monolayers of sulfur-terminated oligonucleotide duplexes were formed on flat gold surfaces, either by exposure of a self-assembled monolayer bearing one oligonucleotide strand to the complementary strand or by preformation of a oligonucleotide duplex that was then deposited on a fresh gold surface. Virtually identical spectral behavior was observed whether the duplex was produced before deposition or by in situ complementary association. With a duplex bearing an appropriate pyrene end-label, the resulting thin film was photoresponsive. Surface emission measurements show no evidence for pyrene aggregation on the modified surfaces. The polarity of the photocurrent, reflecting photoinduced electron transfer initiated by photoexcitation of pyrene, is opposite that expected from the oligonucleotide-mediated reduction of the appended pyrene excited state.Key words: oligonucleotide, self-assembled monolayer, duplex formation, photoelectrochemistry, surface emission.

scholarly journals Density Functional Theory with Modified Dispersion Correction for Metals Applied to Self-Assembled Monolayers of Thiols on Au(111)

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
M. P. Andersson
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Dimethyl Disulfide ◽  
Gold Surface ◽  
Self Assembled Monolayers ◽  
Dispersion Correction ◽  
Dissociative Chemisorption ◽  
Functional Theory ◽  
Assembled Monolayers ◽  
Self Assembled

Using sound physical principles we modify the DFT-D2 atom pairwise semiempirical dispersion correction to density functional theory to work for metallic systems and in particular self-assembled monolayers of thiols on gold surfaces. We test our approximation for two functionals PBE-D and revPBE-D for lattice parameters and cohesive energies for Ni, Pd, Pt, Cu, Ag, and Au, adsorption energies of CO on (111) surfaces of Pd, Pt, Cu, Ag, and Au, and adsorption energy of benzene on Ag(111) and Au(111). Agreement with experimental data is substantially improved. We apply the method to self-assembled monolayers of alkanethiols on Au(111) and find reasonable agreement for PBE-D and revPBE-D for both physisorption of n-alkanethiols as well as dissociative chemisorption of dimethyl disulfide as an Au-adatom-dithiolate complex. By modifying the C6 coefficient for Au, we obtain quantitative agreement for physisorption and chemisorption for both PBE-D and revPBE-D using the same set of parameters. Our results confirm that inclusion of dispersion forces is crucial for any quantitative analysis of the thiol and thiolate bonds to the gold surface using quantum chemical calculations.

Self-Assembled Monolayers of Hexapeptides on Gold:  Surface Characterization and Orientation Distribution Analysis†

2004 ◽  
Vol 108 (45) ◽  
pp. 9673-9681 ◽  
Author(s):  
Xingu Wen ◽  
Richard W. Linton ◽  
Fernando Formaggio ◽  
Claudio Toniolo ◽  
Edward T. Samulski
Keyword(s):  
Surface Characterization ◽  
Gold Surface ◽  
Orientation Distribution ◽  
Self Assembled Monolayers ◽  
Distribution Analysis ◽  
Assembled Monolayers ◽  
Self Assembled

Self-Assembled Monolayers of 12-Mercaptododecylphosphonic Acid on Titania Particles; Application to the Extraction of Heavy Metals

2004 ◽  
Vol 847 ◽  
Author(s):  
Sébastien Anthérieu ◽  
Florence Brodard-Séverac ◽  
Gilles Guerrero ◽  
P. Hubert Mutin
Keyword(s):  
Heavy Metals ◽  
Chemical Analysis ◽  
Phosphonic Acid ◽  
Metal Extraction ◽  
Self Assembled Monolayers ◽  
Extraction Ability ◽  
Self Assembled Monolayer ◽  
Inorganic Hybrid ◽  
Assembled Monolayers ◽  
Self Assembled

ABSTRACTTitania particles (P25 DEGUSSA AG) were treated by a solution of 12-mercaptododecyl-phosphonic acid (MDPA) in toluene to obtain an organic-inorganic hybrid material with thiol functions at the surface. This material was characterized by chemical analysis, solid state 31P MAS NMR and FTIR spectroscopies, and XPS. Reaction of the phosphonic acid end of MDPA with the TiO2 surface led to the formation of a relatively dense and well-ordered self-assembled monolayer (SAM), with a density of about 3.9 SH functions per nm2. This material was tested for the extraction of mercury in water at pH 7, 9, and 11. Chemical analysis indicated no loss of SH functionality, even at pH 11. The best extraction results were obtained at pH 9 and 11, with a metal extraction ability between 85 and 90%.

Specific Immobilization of Streptavidin on Mixed Self-Assembled Monolayers as Mixing Ratio

2007 ◽  
Vol 121-123 ◽  
pp. 495-498 ◽  
Author(s):  
Jun Hyung Park ◽  
Buyng Su Park ◽  
Gu Huh ◽  
Seung Hyun Lee ◽  
Hyun Sook Lee ◽  
...  
Keyword(s):  
Colorimetric Detection ◽  
Gold Surface ◽  
Self Assembled Monolayers ◽  
Scanning Tunneling ◽  
Local Domain ◽  
Mixing Ratio ◽  
Tunneling Microscopy ◽  
Self Assembled Monolayer ◽  
Assembled Monolayers ◽  
Self Assembled

We report on the distribution of mixed self-assembled monolayers (SAMs) composed of biotinylated and diluent alkylthiolates for streptavidin immobilization. Two thiol derivatives, 11-mercapto-1-undecanol (MUOH) and 11-mercaptoundecanoic-(8-biotinylamido-3,6-dioxaoctyl) amide (MBDA), were employed for mixed SAM. These thiols formed self-assembled monolayer without local domain, and streptavidins were immobilized onto biotinylated gold surface without nonspecific binding. In order to find the optimized condition of immobilization of streptavidin, we controlled the mixing ratio of two kind thiols by colorimetric detection assay, and the immobilization was characterized by atomic force microscopy (AFM), scanning tunneling microscopy (STM), and ellipsometer.

Bonding and Penetration at Metal/Self-Assembled Organic Monolayer Interfaces

1995 ◽  
Vol 385 ◽  
Author(s):  
D. R. Jung ◽  
A. W. Czanderna ◽  
G. C. Herdt
Keyword(s):  
Metal Oxide ◽  
Environmental Conditions ◽  
Interfacial Properties ◽  
Self Assembled Monolayers ◽  
Organic Substrates ◽  
Research Results ◽  
Organic Monolayer ◽  
Organic Interfaces ◽  
Assembled Monolayers ◽  
Self Assembled

ABSTRACTThe purpose of research on metals (M) deposited onto self-assembled monolayers (SAMs) is to understand the interactions between the metal and eventually metal oxide overlayers on well-ordered organic substrates. Applications of M/SAM and inorganic/SAM research results to the understanding of real inorganic/organic interfaces in vacuum and under environmental conditions can potentially play a key role in the development of advanced devices with stable interfacial properties. The results of selected M/SAM studies to date are reviewed, and MISAM combinations ranked according to reactivity and penetration. Specific examples of reactive interfaces (Cu/COOH, Cr/several groups) and nonreactive interfaces with penetration (Ag/CH3, Ag/COOH) are used to illustrate the extremes.

Synthesis, Characterization, and Formation of Self-Assembled Monolayers of a Phosphonic Acid Bearing a Vinylene-Bridged Fluoroalkyl Chain

2021 ◽  
pp. 151959
Author(s):  
Tomohiro Shirai ◽  
Satoshi Yamauchi ◽  
Hikari Kikuchi ◽  
Hiroki Fukumoto ◽  
Hiroto Tsukada ◽  
...  
Keyword(s):  
Phosphonic Acid ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled
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