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 9 of 9 for “"site-isolation"”.
-
Site-Isolation, Intramolecular Energy Transfer, and Crosslinking in Synthetic Dendritic Quinacridones
… Quinacridone dendrimers were synthesized for site isolation, intramolecular energy transfer, and photocrosslinking.Site-isolation of quinacridone at the core of a dendrimer was achieved by attaching bulky poly(aryl ether) dendrons to the quinacridone at the amino functional groups. Both …
-
Oxygen atom transfer with manganese-exchanged metal-organic frameworks
… in part to their tunability combined with the site isolation offered by their solid state. In one example, partial substitution of Zn[superscript II] by Mn[superscript II] in Zn₄O(terephthalate)₃ (MOF-5) leads to a distorted all-oxygen ligand field supporting a single Mn[superscript II] site, …
-
Studying Transition Metal Chemistry inside a Metal-Organic Framework
… inside MOFs, producing well-defined reactive sites with long range order, thereby allowing metal-centred chemical processes to be studied in-situ via X-ray crystallography. Furthermore, the physical isolation of active metal complexes prevents unwanted side-reactions such as cluster formation …
-
Weaving through the matrix: investigating the influence of urban land use on weaver bird movements into and out of Cape Town wetlands
… that the urban matrix, as well as patch isolation, size and quality, had on weaver bird movement into and out of wetland sites in Cape Town, a growing city within a global biodiversity hotspot. Weaver bird movement data from 42 wetland sites were obtained through a long term mark - …
-
The selective oligomerization of ethylene with metal-organic frameworks
… The ability to tune the catalytically active site of a solid at the molecular level places MOFs in prime position to answer challenges in heterogeneous catalysis that no other class of solids has been able to address. Chapter 2 of this thesis describes the development of Ni-MFU-4/, a …
-
Synthesis of Metal-Organic Frameworks and Crystalline Porous Polymers and Studies of Their Reactivity
… synthesis of a new MOF, ZrTpmC*, which acts as a site-isolated and well-defined trispyrazolylmethane ligand in the solid state. In Chapter 3, the merit of site isolation in ZrTpmC* was demonstrated through study of Cu(I)-mediated NO reductive coupling, a reaction of importance to biological …
-
The Habitat Ecology of Bog Turtles (<i>clemmys Muhlenbergii</i>) in Southwestern Virginia
… movements are infrequent and the risk of site isolation may be high if wetland habitat loss continues at historic rates. Future management should protect spatially-close sites which contain multiple habitat types, soft substrate, and pockets of water.
-
Preventing the Leakage of Privacy Sensitive User Data on the Web
… zu Inhalt, Thema oder Benutzerinteressen der Website. Die Visualisierung des Tracking Ökosystem stellen wir in einem interaktiven Open-Source Web-Tool bereit. Der dritte wissenschaftliche Beitrag dieser Dissertation ist die Konzeption von zwei neuartigen Schutzmechanismen gegen Web-Tracking und …
-
Engineering site-isolated reactive metal complexes within a Metal-organic Framework
… architecture of MOFs in combination with the isolation that the framework provides to the guest metal complex allows the elucidation of the coordination environment by X-ray crystallography. This excellent combination of properties provides the opportunity to structurally characterize …