Sökning: "directing"
Visar resultat 21 - 25 av 200 avhandlingar innehållade ordet directing.
21. Molecular sieve macrostructures prepared by resin templating
Sammanfattning : A novel template-based method for the preparation of molecular sieve macrostructures was developed. Silicalite-1, ZSM-5 and zeolite beta spheres were prepared by the method. The procedure was also used to produce amorphous silica macrostructures. Anion exchange resin beads were employed as macrotemplates to host the guest silica materials. LÄS MER
22. Ruthenium-catalyzed C-H Functionalization of (Hetero)arenes
Sammanfattning : This thesis concerned about the Ru-catalyzed C-H functionalizations on the synthesis of 2-arylindole unit, silylation of heteroarenes and preparation of aryne precursor.In the first project, we developed the Ru-catalyzed C2-H arylation of N-(2-pyrimidyl) indoles and pyrroles with nucleophilic arylboronic acids under oxidative conditions. LÄS MER
23. Iridium-Catalyzed C−H Activation Methods for Late-Stage Functionalization of Pharmaceuticals
Sammanfattning : C-H activations have over the recent decades risen from a mere curiosity to a viable synthetic strategy. However, challenges in terms of accessible transformations, selectivity and functional group tolerance limit the widespread applicability of this approach. LÄS MER
24. Self-Assembling Surfactant Aggregates for Synthesis of Nanomaterials
Sammanfattning : The main objective of this thesis was to study how surfactant assemblies can be used as templates to form inorganic nanomaterials. Both water-in-oil microemulsions and liquid crystalline phases have been used as structure directing agents. LÄS MER
25. Industrial design - engineering design interaction: Studies of Influencing Factors in Swedish Product Developing Industry
Sammanfattning : Worldwide competition with focus on customer and market needs have initialised new demands on product design and development. Form design aspects can be of decisive importance in the choice of technical principle. However, the integration of industrial design and engineering design activities is not trivial. LÄS MER