Search for dissertations about: "Functionalization"

Showing result 16 - 20 of 245 swedish dissertations containing the word Functionalization.

  2. 16. Iridium-Catalyzed C−H Activation Methods for Late-Stage Functionalization of Pharmaceuticals

    Author : Erik Weis; Belén Martín‐Matute; Jin-Quan Yu; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; amination; catalysis; C-H activation; C-H functionalization; high-throughput experimentation; iodination; iridium; isotope labelling; late-stage functionalization; methylation; Organic Chemistry; organisk kemi;

    Abstract : 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. READ MORE

  4. 17. Synthesis and functionalization of zeolites for NH3-SCR applications

    Author : Alexander Shishkin; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NH3-SCR; NOx reduction; Environmental catalysis; hydrothermal synthesis.; exhaust aftertreatment; zeolite functionalization;

    Abstract : In the strive towards decreasing carbon dioxide emissions from the growing transport sector, the interest for more fuel-efficient combustion engines operating under lean (oxygen excess) conditions has increased. The combustion products, however, formed in such engines contribute considerably to air pollution. READ MORE

  5. 18. Transition metal-catalyzed allylic and vinylic functionalization : Method development and mechanistic investigations

    Author : Johanna M. Larsson; Kálmán J. Szabó; Dennis G. Hall; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; palladium; copper; catalysis; Heck reaction; C-H functionalization; allylic substitution; silylation; borylation; trifluoromethylation; fluorination; mechanistic study; transition metal; alkene; allylic silane; allylic boronate; allylic fluoride; organisk kemi; Organic Chemistry;

    Abstract : The use of small molecule building blocks in, for example, pharmaceutical research and new material development, creates a need for new and improved organic synthesis methods. The use of transition metals as mediators and catalysts opens up new reaction pathways that have made the synthesis of completely new compounds possible as well as greatly improved the synthetic routes to known compounds. READ MORE

  6. 19. Development of Mild Methods for Selective Covalent Functionalization of Graphene

    Author : Anna Lundstedt; Grennberg Helena; Bo Wegge Laursen; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polycyclic aromatic hydrocarbons; graphene models; graphite; local ionization energy surfaces; graphene functionalization; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Abstract : This thesis discusses methods for the comparatively mild covalent functionalization of graphene. Several graphene models were investigated: polycyclic aromatic hydrocarbons (PAHs), chemical vapor deposition (CVD)-graphene on SiO2/Si substrate, graphite foil, graphite flakes, kish graphite and highly oriented pyrolytic graphite. READ MORE

  7. 20. Functionalized Graphene as Superlattice and Gas Sensor

    Author : Tianbo Duan; Klaus Leifer; Andrey Turchanin; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; graphene; functionalization; gas sensor; superlattice;

    Abstract : Graphene, an atomic-thin carbon sheet with carbon atoms tightly packed honeycomb-like lattice, has attracted enormous interest due to its unique chemical and physical properties. However, the intrinsic zero bandgap characteristic of graphene has so far prevented graphene from building effective electronic and optoelectronic devices. READ MORE