Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"UV-Vis absorbance"”.
-
Development of New Computational Approaches to Predict the UV-Vis Behavior of Charge Transfer Organic Dyes and Application to Novel Silole Containing Dyes
… theory (TD-DFT) predictions regarding the UV-Vis absorbance of organic dyes. This work also presents the study of three new dyes that incorporate a novel functionality into their structure using the new computational methods. The first improved method was to use orbital overlap to …
-
CAPILLARY ELECTROPHORESIS ANALYSIS OF SINGLE-STRANDED DNA APTAMERS AND THEIR INTERACTIONS WITH PROTEIN TARGETS AND CARBON DOTS
… drug metabolites. Capillary electrophoresis with UV/Vis absorbance detection and laser-induced fluorescence detection (CE-UV and CE-LIF) was used to explore whether or not carbon dots (CDs) could significantly change the mobility of ssDNA samples upon noncovalent interaction. Preliminary …
-
Characterization and patterned polymer films from a novel self-assembly process
… and linear multilayer deposition process. UV/Vis absorbance, contact angle, and ellipsometry measurements revealed that in all cases the bilayer deposition process was linear and highly producible from layer to layer and film thickness of up to 1 µm can be easily obtained by repeating the …
-
Synthesis Of Alkylthiol-containing Fluorene Derivatives For Gold Nanoparticle Functionalization
… and an aqueous gold nanoparticles solution. UV-vis absorbance spectroscopy was used to monitor the progress of the attachment. Surface Enhanced Raman Scattering (SERS) spectroscopy was used to probe the enhancement of Raman signal by the metallic nanoparticles.
-
Organic materials with acenoid and iptycene structures
… structures. Electrochemical behaviors and UV-vis absorbance spectroscopy results of these materials are also discussed. It was demonstrated that the substitution of alkyl/alkoxy groups on the main chain not only provided better solubility in common organic solvents, but also subtly tuned …
-
Squaramide-Naphthalimide Conjugates as Potential Self-Assembled Materials and as DNA Binders
… involve various techniques including VT-NMR, UV absorbance time studies, extinction coefficient studies and Scanning Electron Microscopy. Chapter 4 discusses the possible DNA binding ability of the novel synthesised compounds using UV-Vis absorbance, fluorescence and Ethidium Bromide Assays. …
-
The adsorption of bidens pilosa dye molecules onto TiO2 nanoparicle surfaces for optimization of light harvesting efficiency in dye sensitized solor cell: an experimental and theory study
… well as their characterization using ultraviolet-visible, Fourier transformed infrared spectroscopy and X-ray diffraction. Furthermore, the study used Density Functional Theory to describe the optical characteristics of produced nanoparticles. The UV-Vis results showed that the dye extracted using …
-
Reactions of graphene oxide and buckminsterfullerene in the aquatic environment
… to some extent. In addition, the ultraviolet-visible (UV-vis) spectrum and liquid chromatographic separation of photo-irradiated samples indicated that decomposition of C60 occurred. Aqueous graphene oxide suspensions produced reactive oxygen species (ROS), including superoxide anion (O2˙–)and …
-
Application of chromatographic and spectroscopic techniques in the evaluation of the lipid fraction of animal products
… of oxidation and quantify secondary products UV/VIS absorbance spectroscopy was applied. Most of the foods analysed in this study were meat products. In actual fact, lipid oxidation is a major deterioration reaction in meat and meat products and results in adverse changes in the colour, …
-
Inducing Chirality in CdS Nanocrystals with Biomolecules
… influence NR optical properties, including UV-Vis absorbance, CD, and photoluminescence. These studies reveal that Cys derivatives can be detected at µM concentrations and suggest that both internal and n-terminal Cys residues are capable of inducing strong chiroptical responses. Chapter 4 …
-
Continuous synthesis of metal halide perovskite nanoparticles with sharp and stable emission
… 3D flow reactors, and on-line measurements (UV-vis absorbance and photoluminescence) reveals fundamental understanding about the growth of these perovskite nanomaterials, which in turn leads to superlative size reducibility (2.2 ± 0.3 nm) and properties (sharp blue emission at 472 nm …
-
A biosynthetic approach to understanding the assembly of CuA centers
… and oxygen-dependent standard and stopped-flow UV-Vis absorbance spectroscopy, as well as freeze-quench and standard EPR spectroscopy. Analysis of mutant CuAAz proteins, in which various of the copper-binding ligands were removed or perturbed, provided information about the ligand sets of the …
-
Synthesis and characterization of metallic nanoparticles with photoactivated surface chemistries
… nanoparticles at each step including UV-absorbance, zeta potential, and dynamic light scattering. Different generations of oligomers were synthesized to be used as gold nanorods coating, and each coating was tested and characterized using appropriate techniques. Our two-step coating …
-
USING CONJUGATED POLYMERS AS BIOLOGICAL SENSOR BASED ON FLUORESCENCE RESONANCE ENERGY TRANSFER
… and sensing mechanism was investigated using UV-Vis and steady-state emission spectroscopy. The liposome solution yielded a weak donor emission (sulforhodamine 101) from after photo-polymerization of diacetylene monomers. This is due to energy transfer from the donor to PDA backbone chains …