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Electrochemical properties of alkanethiol self assembled monolayer on gold

Electrochemical properties of alkanethiol self assembled monolayer on gold

Electrochemical properties of alkanethiol self assembled monolayer on gold

... Adsorption of Anions 5.1.1.1 Adsorption of Anions on Bare Au 5.1.1.2 Adsorption of Ions on the Outer SAM Surface 5.1.2 Hydrogen Evolution Reaction (HER) on Gold 5.1.3 Structure Change of the Electrode ... Applications of SAMs 1.2 Thiol SAMs on gold 1.2.1 Chemistry of Alkanethiol Adsorption 1.2.2 The Structure of Alkanethiol SAM on Gold (111) 1.3 Electrochemistry and Alkanethiol SAMs 1.4 Motivation 1.5 ... S Au Figure 1.1 A schematic picture of alkanethiol self- assembled monolayer on a gold surface Chapter Introduction A schematic picture of alkanethiol SAM on gold is shown in Figure 1.1 in which...
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Báo cáo hóa học:

Báo cáo hóa học: " Self-assembled monolayer of designed and synthesized triazinedithiolsilane molecule as interfacial adhesion enhancer for integrated circuit" pdf

... Cite this article as: Wang et al.: Self-assembled monolayer of designed and synthesized triazinedithiolsilane molecule as interfacial adhesion enhancer for integrated circuit Nanoscale Research ... triazinedithiols and silane (see Figure 1) In this paper, we demonstrate a designed and synthesized triazinedithiolsilane molecule - 6-(3-triethoxysilylpropyl) Table Chemical formula and nomenclature of the ... SAM-coated epoxy resin and ELD copper film was up to 13.8 MPa, which could satisfy the purpose of TESPA SAM as adhesion enhancer and diffusion barrier layer, while the adhesion strength between...
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Báo cáo hóa học:

Báo cáo hóa học: " Formation and Organization of Amino Terminated Self-assembled Layers on Si(001) Surface" docx

... the formation mechanisms Two alternative pathways, formation of oligomers and then adsorption and reorientation (two-dimensional networking) on the surface is one of the mechanisms that one can ... variation of water contact angle of the Si(001) surfaces as a function of the TPDA concentration after treatment is quite significant For example, in the cases of 0.5 and 2% TPDA concentrations, ... findings demonstrated in the previous paragraphs Effect of TPDA Concentration The effect of TPDA concentration on the film thicknesses and water contact angles on the hydroxylated silicon surface...
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UNDERSTANDING AND MINIMIZING THE ROLE OF DEFECTS IN SELF ASSEMBLED MONOLAYER BASED JUNCTIONS

UNDERSTANDING AND MINIMIZING THE ROLE OF DEFECTS IN SELF ASSEMBLED MONOLAYER BASED JUNCTIONS

... Understanding and Minimizing the Role of Defects in Self- Assembled Monolayer Based Junctions Jiang Li (M Sc Chemistry, Nanjing University, China) A THESIS SUMMITTED FOR THE DEGREE OF DOCTOR OF ... electrodes.47 The quality of surface is determined by BV, which contains all the relevant information regarding the topography of the surfaces (see below) The importance of understanding the role of defects ... Controlling Leakage Currents: The Role of the Binding Group and Purity of the Precursors for Self- Assembled Monolayers in the Performance of Molecular Diodes 81 4.1 Introduction 82 4.2 Results and...
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Effect of the size of electrode on electrochemical properties of ferrocene functionalized polypyrrole towards DNA sensing

Effect of the size of electrode on electrochemical properties of ferrocene functionalized polypyrrole towards DNA sensing

... should favour the electropolymerization reaction on the microelectrode surface instead of macroelectrode 3.2 The effect of reducing the electrode size on the electrochemical properties of the biosensors ... size of the electrode and amount of the analyte, i.e decreasing the DNA target [32] In the present work the decrease of the size of the electrode and the geometry of the cell leads to a polypyrrole ... attachment of the DNA probe by the formation of an amide link was performed by the reaction of the amino group of DNA and activated ester of the functionalized polypyrroles layer The electrochemical...
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Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 1

Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 1

... concept of the self- assembled monolayers (SAMs) is primarily introduced by Zisman in 19 46 [12 , 13 ] The traditional SAMs is an organized layer of INTRODUCTION amphiphilic molecules in which one ... development, and biological process Works of thiols adsorbed on gold surfaces by Nuzzo and Allara [13 , 15 ] in the early 19 80s and trichlorosilanes on silicon oxide by Maoz and Sagiv [13 , 16 ] introduced ... deposited onto the substrate surface from either vapor or liquid phase A typical example is that the formation of thiolate monolayers on the gold (11 1) surface (Fig 1. 3) Fig 1. 3 Schematic of an n-dodecanethiolate...
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Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 2

Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 2

... Valiyaveettil Suresh’s group C12H25 C12H25 C12H25 N C12H25 C12H25 C12H25 N C12H25 C12H25 C12H25 C12H25 CPAH CHBC C12H25 Br N Br N C12H25 C12H25 C12H25 CHBC2 N C12H25 N C12H25 TCC 34 EXPERIMENTAL R ... C12H25 C12H25 N C12H25 C12H25 N C12H25 C12H25 CHBC3 Derivatives of perylene by Prof Valiyaveettil Suresh’s group C12H25 N O O O C12H25 N O O C12H25 N O S Br Br S O N O C12H25 O O DDPER N O C12H25 S170 ... C12H25 C12H25 N O O C12H25 N O OMe OMe MeO OMe MeO MeO OMe OMe O N O C12H25 S169 O N O C12H25 S1 72 36 EXPERIMENTAL O C12H25 N O O C12H25 N O OCH3 OCH3 H3CO S S H3CO OCH3 OCH3 O N O C12H25 SIV233...
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Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 3

Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 3

... calibration of the “A” scanner for scanning tunneling microscope function 3. 3.2 Calibration Procedures The calibration of STM can be conducted with a standard sample: highly ordered pyrolytic graphite ... bright carbon atoms was 0.267nm 44 CALIBRATION Fig 3. 4 Section Analysis of the STM image in Fig 3. 3 along the orientation of the white arrow Fig 3. 5 shows the standard parameters of the graphite ... finds useful applications such as the production and detection of sound, generation of high voltages, electronic frequency generation, microbalance, and ultra fine focusing of optical assemblies...
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Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 4

Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 4

... to verify the existence of interaction between the adsorbate and graphite surface 4. 2 STM Results and Computational Simulations 4. 2.1 Solution Preparation Three solutions of fatty acids in phenyloctane ... interaction as shown in Table 4. 2 Our computational simulation does not reveal the physisorption route and steps of the monolayers formation, instead, it can only provide the energies of the final ... about the configuration of two species within the 63 PHYSISORPTION OF BINARY FATTY ACIDS ON HOPG monolayers formed by the binary acids solution Fig 4. 9 Top view of Model A and B with graphite lattice...
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Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 5

Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 5

... steric repulsion Fig 5. 4 The molecular model of the DDPER arrays 5. 4 The Computational Simulation 5. 4.1 Conformation of gas phase DDPER and its derivatives Building of the computational model started ... interaction 83 FORMATION OF SAMs CONRTOLLED BY STERIC EFFECTS 5. 4.2 DDPER/HOPG vs S170/HOPG Computational simulation was applied to compare the adsorption energies of DDPER and S170 on graphite ... Section analysis showed that the DDPER centers had an average relative height of 0.2 nm (Fig 5. 3) Fig 5. 3 The height profile of the DDPER Self- Assembled Monolayers 78 FORMATION OF SAMs CONRTOLLED...
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Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 6

Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 6

... 3.900.80nm and 2.950 .60 nm N N N Fig 6. 4 Left: High resolution image of HHB monolayers: Bright hexagons represent the benzene ring of HHB Right: the molecular configuration of HHB (R-HHB) in monolayers ... N Fig 6. 3 Left: High resolution image of HHB monolayers: Bright hexagons represent the benzene ring of HHB Right: the molecular configuration of HHB (L-HHB) in monolayers (Vbias = 100mV, and Iset ... Fig 6. 8 Illustration of physisorption of HHB molecule onto HOPG surfaces 102 ADSORPTION-INDUCED CHIRAL SAMs The physisorption process can be considered as an addition reaction between the HHB and...
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Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 7

Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 7

... be 7. 4.1 Concentration It is very obvious that the possibility of forming SAMs on HOPG is highly concentration dependent   1 k [ P] When the concentration of the molecule increases, (7- 7) ... observation and equation (7- 10), a rough diagram [Fig 7. 4] of the surface coverage  vs [P] was proposed 1 17 FORMATION OF 2D CRYSTALS ON HOPG Fig 7. 4 Propsed diagram of surface coverage  vs solution ... growth of SAMs on HOPG Although the graphite surface has a high degree of perfection, they still have steps and defects, as shown in Fig 7. 1 112 FORMATION OF 2D CRYSTALS ON HOPG Fig 7. 1 STM image of...
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Scanning tunneling microscopy studies of self assembled nanostructures on graphite

Scanning tunneling microscopy studies of self assembled nanostructures on graphite

... Introduction Several studies of metals on graphite have demonstrated the fabrication of different types of nanostructures and behavior of metal atoms on graphite Ganz et al studied the growth of different ... interaction can alter particle shape significantly 1.1 Nucleation and Growth of nanostructures on Inert substrates The understanding of nucleation and growth of self- assembled nanostructures on solid ... characterize self- assembled nanostructures for fundamental interests along with several applications in the field of nanodevices [1113] The shape, size and location of self- assembled nanostructures...
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tribology of organic self assembled monolayers (SAMs) and thin films on si surface

tribology of organic self assembled monolayers (SAMs) and thin films on si surface

... K Sinha and M P Srinivasan, “Friction and wear life evaluation of silane-based self- assembled monolayers on silicon surface , “Life Cycle Tribology (Editors: D Dowson, M Priest, G Dalmaz and ... strength of selfassembled monolayers with Si substrate on wear resistance”, Proceedings of the Nano Sikkim 2: Friction and Biotribology, International Conference conducted by International Nanotribology ... development of ultra -thin films (SAMs and polymer thin films of composite and hybrid nature) on Si surface (with the aim of low friction and high wear durability) and the evaluation of their tribological...
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Báo cáo hóa học:

Báo cáo hóa học: " Enhanced electrochemical properties of fluoride-coated LiCoO2 thin films" pot

... profiles of the thin films (a) Discharge capacities and cyclic performances of pristine and fluoridecoated LiCoO2 thin films, (b) discharge profile of the pristine film, (c) discharge profile of ... Enhanced electrochemical properties of fluoride-coated LiCoO2 thin films Hye Jin Lee1, Seuk Buom Kim1, and Yong Joon Park*1 Department of Advanced Materials Engineering, ... images of the pristine and fluoridecoated LiCoO2 thin films The surface of the pristine LiCoO2 film is composed of small polyhedral grains As shown in Figure 1a, the crystal faces on the surface of...
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