Global ETD Search
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Showing 1 to 14 of 14 for “"dithiols"”.
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Conjugated dithiols as model systems for molecular electronics: assembly, structure, and electrical response
… relationships of model conjugated dithiols, the formation of electrical junctions with these molecular assemblies, and the characterization of these junctions. Biphenyldithiol (BPDT), terphenyldithiol (TPDT), and quaterphenyldithiol (QPDT) are assembled in solution from their …
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Applications for the activation of hydroxyl groups to nucleophilic attack
… Two approaches to the synthesis of vic-dithiols were investigated. The more successful approach involves reaction of the trithiocarbonate dianion with cyclic sulphate esters of vic-diols to yield a protected version of the vic-dithiols. In a second approach, rearrangement of …
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ZnSe Quantum Dots as a platform for solar fuels synthesis
… of colloidal photocatalysts. Furthermore, dithiols, a class of capping ligands not examined in the context of CO2 reduction previously, were found to enhance CO2 reduction on ZnSe QDs as well. A length dependence of the dithiols was found in which shorter dithiols (ca. 4 Å) promote CO2 …
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The characterization and chemistry of {\it mono\/}- and {\it bis\/}-cyclopentadienyl titanium thiolates.
The reactions of Cp$\rm\sb2TiCl\sb2$ with the dithiols, HS(CH$\sb2)\sb{\rm n}$SH (n = 2, 3) in the presence of imidazole proceed with formation of imidazole$\cdot$HCl affording relatively insoluble titanocene dithiolate derivatives 2.1 and 2.2 respectively. Alternatively, 2.2 can be prepared by the …
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Rhizophoraceae alkaloids : an approach to the synthesis of cassipourine
… discussed in the light of the chemistry of 1,2-dithiols and of the pyrrolizidine ring system. A route commencing with L-proline having been chosen, this was converted into l-(p-toluenesulphonyl)-pyrrolizidine-2-aldehyde by protecting the amine with the p-toluenesulphonyl group, esterifying, …
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Stimuli-Responsive Polymer Systems that Respond to Redox Potential and pH for Controlled Drug Release
… nanogels specifically degrade to small molecule dithiols intracellularly in response to the reducing agent glutathione present inside of cells. Due to the ease of synthesis, rapid gelation times, and tunable functionality, these non-toxic and fully degradable nanogels offer excellent potential …
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Designing surface chemistries for in situ AFM investigations of biomolecular reactions with proteins at the nanoscale
… sandwich assays. The self-assembly of á,ù-alkanedithiols onto Au(111) was investigated using AFM. When SAMs of 1,8-octanedithiol or 1,9-nonanedithiol are grown naturally from solution, different surface orientations are observed in comparison to methyl-terminated n-alkanethiols. Local views from …
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Peri-substituted dithianaphthalenes as sources of reactive intermediates in organic chemistry
… 103) were prepared by reacting 1,8-naphthalene dithiols with thionyl chloride in the presence of pyridine. The trisulfide-2-oxides 49, 58 and 103 were shown to act as sulfur monoxide transfer reagents with dienes. ortho-Substituents on the naphthalene ring increased the rate and lowered the …
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Synthesis, Characterization and Electrochemical Properties of Gold Nanomolecules
… reactions is explained. Ligand exchange with dithiols is covered in this chapter. Interstaple vs intrastaple dithiol binding, optimum chain length for bidentate binding and effect on optical properties are studied in this project. Ligand exchange with other chalcogenide ligands like tellurides …
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Mixed-valence bimetallic dithiolates of iron, cobalt, and nickel and their relevance to the hydrogenases
… loss of CpH. The reaction of nickelocene with dithiols is investigated in chapter 4 and is found to be quite complex: dinickel, trinickel, and pentanickel species are formed. In contrast to the known monothiolate dimers, the dithiolate compounds feature a pyramidalized Ni2S2 core by virtue of …
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Immunological and biosynthetic studies of the human pyruvate dehydrogenase complex
… is not attributable to the importance of the dithiols in Ab recognition per se but rather to the fact that these substituents may block or mask the epitope from Ab recognition as a result of steric hindrance. In an attempt to investigate the hypothesis that PBC could be induced by aberrant …