Studying properties of nano scale moieties using functionalized self assembled monolayers
Studying properties of nano scale moieties using functionalized self assembled monolayers
... STUDYING PROPERTIES OF NANO- SCALE MOIETIES USING FUNCTIONALISED SELF- ASSEMBLED MONOLAYERS AH QUNE LLOYD FOONG NIEN ( B.SC (HONS) NUS ) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... Self- Assembled Monolayers The ends of alkane thiols can further be functionalized with moieties of interest to prepare functionalized self- assembled mono...
Ngày tải lên: 11/09/2015, 09:11
Báo cáo hóa học: " Computer-aided design of nano-filter construction using DNA self-assembly" docx
... been bound DNA to metal substrates using DNA end modifications [24–29] By using this feature and designing the sequences of sticky ends one can bind the network to the proper position of the supporter ... able to filter some of those mentioned molecules (See Table of supplementary data) Discussion In this study, we designed a new method to construct fully designed nano-filters u...
Ngày tải lên: 22/06/2014, 22:20
Tripathy, optical properties of nano silicon
... Raman spectra of (a) nanocrystalline Si prepared by pulsed plasma processing and (b) porous silicon prepared by anodic etching using 488 nm line of Ar+ laser Optical properties of nano- silicon 287 ... 1⋅82 Optical properties of nano- silicon 289 clear distinction between hydrogen free and hydrogenated clusters Figure Plots of gap energy as a function of number of...
Ngày tải lên: 16/03/2014, 15:31
Báo cáo hóa học: " Aqueous Solution Preparation, Structure, and Magnetic Properties of Nano-Granular ZnxFe32xO4 Ferrite Films" potx
... Izaki’s method, the incorporation of Zn into magnetite was finished by the deposition of magnetite film on ZnO thin film, so the Zn content of ferrite film and the magnetic properties cannot be well adjusted ... patterns of the ZnxFe3-xO4 ferrite films with x = 0, 0.12, 0.41, 0.77, and 0.99 Figure shows the XRD patterns of the ZnxFe3-xO4 ferrite films with the x values of...
Ngày tải lên: 21/06/2014, 17:20
Báo cáo hóa học: " Improved Electromagnetic Interference Shielding Properties of MWCNT–PMMA Composites Using Layered Structures" docx
... 27 dB SE of MWCNT–PMMA composite films for high CNT loadings of about 40 wt% Yuen et al [21] studied the effect of processing conditions on the EMI shielding properties of MWCNT–PMMA composites ... Effect of MWCNT Content on SER and SEA of MWCNT–PMMA Composites In our earlier studies [18], we reported the effect of MWCNT content on the electrical conductivity and EM...
Ngày tải lên: 22/06/2014, 01:20
Báo cáo khoa học: "Molecular structure and biochemical properties of lignins in relation to possible self-organization of lignin networks" pdf
... importance in durability and mechanical properties, as recently discussed in the case of cell wall proteins by Cassab and Warner (1988) Furthermore, in the case of lignins, this cross-linking phenomenon ... Polymeric structure of spruce lignin Science 170, 173-176 Borg-Olivier O & Monties B (1989) Characterization of lignins, phenolic acids and tyramine in the sub...
Ngày tải lên: 09/08/2014, 03:24
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...
Ngày tải lên: 14/09/2015, 08:37
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 C12...
Ngày tải lên: 14/09/2015, 08:37
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 stand...
Ngày tải lên: 14/09/2015, 08:37
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 onl...
Ngày tải lên: 14/09/2015, 08:37
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...
Ngày tải lên: 14/09/2015, 08:37
Studies of self assembled monolayers on highly oriented pyrolytic graphite using scanning tunneling microscopy and computational simulation 6
... 3.900.80nm and 2.950 .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
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 sur...
Ngày tải lên: 14/09/2015, 08:37
Báo cáo sinh học: " Raman enhancement of rhodamine adsorbed on Ag nanoparticles self-assembled into nanowire-like arrays" docx
... Raman enhancement of rhodamine adsorbed on Ag nanoparticles self-assembled into nanowire-like arrays Marianthi Panagopoulou1, Nikolaos Pantiskos1, Panos ... discussion Randomly distributed Ag nanoparticles Randomly distributed Ag nanoparticles were studied as a function of deposition time, in order to obtain the optimum evaporation condition, concerning ... AFM...
Ngày tải lên: 18/06/2014, 22:20
báo cáo hóa học:" Raman enhancement of rhodamine adsorbed on Ag nanoparticles self-assembled into nanowire-like arrays" docx
... Raman enhancement of rhodamine adsorbed on Ag nanoparticles self-assembled into nanowire-like arrays Marianthi Panagopoulou1, Nikolaos Pantiskos1, Panos ... discussion Randomly distributed Ag nanoparticles Randomly distributed Ag nanoparticles were studied as a function of deposition time, in order to obtain the optimum evaporation condition, concerning ... AFM...
Ngày tải lên: 20/06/2014, 04:20