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Self Assembled Monolayers Of Polyglycine Alkanethiols On Gold
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Book Synopsis Self-assembled Monolayers of Poly(glycine) Alkanethiols on Gold by : Changhoon Lee
Download or read book Self-assembled Monolayers of Poly(glycine) Alkanethiols on Gold written by Changhoon Lee and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Self-assembled Monolayers on Gold Generated from Chelating Alkanethiols by : Joon-Seo Park
Download or read book Synthesis and Characterization of Self-assembled Monolayers on Gold Generated from Chelating Alkanethiols written by Joon-Seo Park and published by . This book was released on 2004 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Self-assembled Monolayers on Gold: from Ensembles to Single Molecules by : Arianna Friggeri
Download or read book Self-assembled Monolayers on Gold: from Ensembles to Single Molecules written by Arianna Friggeri and published by . This book was released on 2000 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Self-Assembled Monolayers on Gold Substrates by : Mihaela Georgeta Badin
Download or read book Self-Assembled Monolayers on Gold Substrates written by Mihaela Georgeta Badin and published by VDM Publishing. This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-assembled monolayers (SAMs) consist of densely packed long-chain organic molecules, which are chemisorbed on metal substrates through a sulfur head group. The purpose of this work, is to study the arrangement and structure of SAMs by IR, XPS, NEXAFS, STM, Ellipsometry and contact angle. While the first group of triptycenethiols and the second group of triarylaminethiols show a formation of disordered films on the gold surface, the third group of alkanethioacetates shows the formation of highly ordered monolayers. A further adsorption to upright oriented molecules is hindered due to kinetic effects. In the case of azo-molecules it is shown that the photoisomerization process is not reversible. These molecules are not able to form highly ordered monolayers on the gold surface due to the critical effect of azo-moiety.
Book Synopsis Multidentate Alkanethiols with Cyclohexyl and Pyridyl Frameworks Forming Self-assembled Monolayers on Gold by : Burapol Singhana
Download or read book Multidentate Alkanethiols with Cyclohexyl and Pyridyl Frameworks Forming Self-assembled Monolayers on Gold written by Burapol Singhana and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-assembled monolayers (SAMs) generated from adsorption of the tridentate adsorbate having a cyclohexane ring as a platform were studied. The first generation of these SAMs was derived form cyclohexane-cis,cis-1,3,5-triyltrimethanethiol (CyTSH) and (cis,cis-1,3,5-trimethylcyclohexane-1,3,5-triyl)trimethanethiol (3C1CyTSH). Thin films prepared by the adsorption of these molecules onto the surface of gold were characterized by ellipsometry, contact angle goniometry, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), and X-ray photoelectron spectroscopy (XPS). CyTSH was found to generate multilayer thin films with many unbound thiol species and oxidized sulfur moieties (e.g., disulfides and sulfone). In contrast, 3C1CyTSH was found to generate monolayer films in which ~90% of the thiols were bound to the surface of gold (~10% unbound), and there were no oxidized sulfur species. In comparing CyTSH and 3C1CyTSH, the methyl groups of 3C1CyTSH impart rigidity to the structure, which significantly enhances the chemisorption of sulfur to the surface of gold. Ellipsometric measurements and analysis by XPS indicate that the thickness of the SAM formed from 3C1CyTSH is ~5 Å. The second generation of these SAMs generated from the analogs of the R3C6H6(CH2SH)3 (abbreviated as 3CnCyTSH) where R = -(CH2)nH and n = 1, 3, 8 and 13 were also examined. Characterization of the SAMs revealed that all sulfur atoms of these tridentane adsorbates are bound to the surface of gold and generated loosely packed monolayer thin films with lower packing densities of the alkyl chains than a normal alkanethiolate SAM (C18SH). The trends in packing density and conformational order for these SAMs decreased as follows: C18SH ” 3C13CyTSH > 3C8CyTSH > 3C3CyTSH. A preliminary study of the thermal stability of this series of SAMs by XPS measurements has shown that the tridentate adsorbates (3CnCyTSH) are more stable than the normal alkanethiolate SAM (C18SH), a characteristic that is attributable to the chelating effect. Finally, a new pyridyl-based adsorbate (C18OPDSH) was synthesized and used to form SAMs. This SAM was characterized and the data was compared to those generated from the normal alkanethiol C18SH and C18OBDSH. XPS spectra display that a lone electron pair of pyridyl nitrogen atom of C18OPDSH interacts weakly with gold surface with some unbound thiols on the film. Both C18OPDSH and C18OBDSH adsorbates generate loosely and disordered packed thin films when compared to a normal alkanethiol (C18SH). The evaluation of the thermal stability using XPS measurement indicates that the C18OPDSH SAM is more stable when compared to both C18OBDSH and C18SH SAMs.
Book Synopsis Molecular Dynamics Study of Alkanethiolate Self-Assembled Monolayer Coated Gold Nanoparticle by :
Download or read book Molecular Dynamics Study of Alkanethiolate Self-Assembled Monolayer Coated Gold Nanoparticle written by and published by . This book was released on 2007 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through molecular simulations we have observed that the surface of gold nanoparticles become highly corrugated by the adsorption of alkanethiolate self assembled monolayers (SAMs). Furthermore, as the temperature is increased, the SAMs dissolve into the gold nanoparticle, creating a liquid mixture at temperatures much lower than the melting temperature of the gold nanoparticle. By analyzing the mechanical and chemical properties of gold nanoparticles at temperatures below the melting point of gold, with different SAM chain lengths and surface coverage properties, we have determined that the system is metastable. The model and computational results that provide support for this hypothesis are presented in this paper.
Book Synopsis Elucidating the Structure of Peptide Self-assembled Monolayers on Gold Nanoparticles by : E. L. Colangelo
Download or read book Elucidating the Structure of Peptide Self-assembled Monolayers on Gold Nanoparticles written by E. L. Colangelo and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Self-assembled Monolayers on Gold Generated from Partially Fluorinated Alkanethiols and Aliphatic Dithiocarboxylic Acids by : Ramon Colorado
Download or read book Synthesis and Characterization of Self-assembled Monolayers on Gold Generated from Partially Fluorinated Alkanethiols and Aliphatic Dithiocarboxylic Acids written by Ramon Colorado and published by . This book was released on 2002 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials chemistry written by Zheng Chai and published by . This book was released on 1998 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular-Level Control Over Surface Order in Self-Assembled Monolayer Films of Organic Thiols on Gold by : Colin D. Bain
Download or read book Molecular-Level Control Over Surface Order in Self-Assembled Monolayer Films of Organic Thiols on Gold written by Colin D. Bain and published by . This book was released on 1988 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-chain omega-hydroxyalkanethiols (HS(CH2)nOH) coordinate to gold surfaces through the sulphur atom and produce ordered, hydrophilic monolayers in which the hydroxyl groups are exposed at the outer surface. Coadsorption of two omega-hydroxyalkanethiols of different chain lengths, n, results in formation of a monolayer having a disordered surface region that is markedly less hydrophilic than the homogeneous, hydroxylic surface formed from either pure compound. By controlling the composition of the monolayer, it is also possible to control simultaneously the degree of order in the surface and its hydrophilicity. In the monolayers containing a mixture of alkanethiol components, these components apparently do not phase-segregate into macroscopic islands, but are dispersed on a molecular scale. Keywords: Gold, Wettability, Ellipsometry, Self assembly, Films.
Book Synopsis The Properties of Two-component Self-assembled Monolayers of Alkanethiolates on Gold, and the Structure and Properties of Self-assembled Monolayers of Hydroxamic Acids on Metal Oxide Surfaces by : John Paul Folkers
Download or read book The Properties of Two-component Self-assembled Monolayers of Alkanethiolates on Gold, and the Structure and Properties of Self-assembled Monolayers of Hydroxamic Acids on Metal Oxide Surfaces written by John Paul Folkers and published by . This book was released on 1993 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Self-assembled Monolayers on Gold Substrates Made from Functionalized Thiols and Dithiols by : Mihaela Georgeta Badin
Download or read book Self-assembled Monolayers on Gold Substrates Made from Functionalized Thiols and Dithiols written by Mihaela Georgeta Badin and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structure of Self-assembled Monolayers on Gold Studied by NEXAFS and Photoelectron Spectroscopy by : Somsakul Watcharinyanon
Download or read book Structure of Self-assembled Monolayers on Gold Studied by NEXAFS and Photoelectron Spectroscopy written by Somsakul Watcharinyanon and published by . This book was released on 2008 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Study of Self-assembled Monolayers on Gold Generated from Chelating Alkanedithiols by : Young-Seok Shon
Download or read book Synthesis and Study of Self-assembled Monolayers on Gold Generated from Chelating Alkanedithiols written by Young-Seok Shon and published by . This book was released on 1999 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies on Self-assembled Monolayers and Uncrosslinked Molecules from Polydimethylsiloxane on Gold by : Olutayo Olaseni Ogunwemimo
Download or read book Studies on Self-assembled Monolayers and Uncrosslinked Molecules from Polydimethylsiloxane on Gold written by Olutayo Olaseni Ogunwemimo and published by . This book was released on 2006 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Formation, Structural Dynamics, and Surface Properties of Thiol/gold Self Assembled Monolayer by : David Stephen Karpovich
Download or read book The Formation, Structural Dynamics, and Surface Properties of Thiol/gold Self Assembled Monolayer written by David Stephen Karpovich and published by . This book was released on 1996 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Excitations of Self-assembled Monolayers on Gold by : Sung Jin Park
Download or read book Surface Excitations of Self-assembled Monolayers on Gold written by Sung Jin Park and published by . This book was released on 2006 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: