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 Electrochemis...

Ngày tải lên: 30/09/2015, 06:36

... 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-triethoxysilylprop...

Ngày tải lên: 21/06/2014, 01:20

... 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...

Ngày tải lên: 22/06/2014, 18:20

... 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)...

Ngày tải lên: 09/09/2015, 08:18

... 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...

Ngày tải lên: 13/09/2015, 18:05

... 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...

Ngày tải lên: 14/09/2015, 08:37

... 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 C12...

Ngày tải lên: 14/09/2015, 08:37

... 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 stand...

Ngày tải lên: 14/09/2015, 08:37

... 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 onl...

Ngày tải lên: 14/09/2015, 08:37

... 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...

Ngày tải lên: 14/09/2015, 08:37

... 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 mon...

Ngày tải lên: 14/09/2015, 08:37

... 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 sur...

Ngày tải lên: 14/09/2015, 08:37

... 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 growt...

Ngày tải lên: 14/09/2015, 12:09

... 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 conducte...

Ngày tải lên: 14/09/2015, 12:11

... 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 Engineeri...

Ngày tải lên: 20/06/2014, 23:20