Sökning: "Mixed Complexes"

Visar resultat 1 - 5 av 50 avhandlingar innehållade orden Mixed Complexes.

1. 1. Mixed Block Copolymer Solutions: Self-Assembly and Interactions

   Författare :Solmaz Bayati; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer; Block Copolymer; PEO-PPO-PEO; Pluronics©; Bile Salt; NaGDC; PNIPAAM; PAMPTMA; PAMPS; Mixed Micelle; Self-Assembly; Mixed Complexes;

   Sammanfattning : This thesis incorporates studies on the aqueous systems of two types of thermoresponsive amphiphilic block copolymers; a series of nonionic triblock copolymers comprising blocks of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) denoted as PEO-PPO-PEO block copolymers, and a series of ionic diblock copolymers consisting of one charged block and one block of poly(N-isopropylacrylamide) (PNIPAAM). Various techniques, such as dynamic and static light scattering (DLS and SLS), small angle X-ray and neutron scattering (SAXS and SANS), high sensitivity differential scanning calorimetry (HSDSC), turbidimetry, electrophoretic mobility measurements, and two-dimensional proton NMR nuclear Overhauser effect spectroscopy (2D 1H NMR NOESY), were applied to study these block copolymer systems. LÄS MER

3. 2. Homoleptic Arylcopper Complexes

   Författare :Henrik Eriksson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cocrystallisation; Grignard; organocopper; bromide; thienyl; mesityl; crystal structure; synthesis; copper I ; arylcopper;

   Sammanfattning : New arylcopper complexes have been synthesised and characterised structurally. The reaction between the Grignard reagent (viph)MgBr (viph = ortho-vinylphenyl) and CuCl has been studied and two unstable mixed aryl/halide intermediates, [Mg(THF)6][Cu5(viph)2Br4]2.THF and [Mg(THF)5Cl][Cu5(viph)4Br2]. LÄS MER

4. 3. Synthetic [FeFe] Hydrogenase Active Site Model Complexes

   Författare :Lennart Schwartz; Sascha Ott; Marcetta Y. Darensbourg; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydrogenase mimic; proton reduction; bioinorganic chemistry; diiron hexacarbonyl complexes; artifical photosynthesis; hydrogen; Organic chemistry; Organisk kemi;

   Sammanfattning : [FeFe]-Hydrogenases (H2ases) are metalloenzymes that can catalyze the reversible reduction of protons to molecular hydrogen as part of the metabolism of certain cyanobacteria and green algae. Due to the low availability of the enzyme, synthetic complexes that mimic the natural active site in structure, function and activity are highly sought after. LÄS MER

5. 4. Investigations of Solvent Systems Based on bis-triazine-bipyridine (BTBP) - class Ligands for the Separation of Actinides from Lanthanides

   Författare :Teodora Retegan Vollmer; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; lanthanides; diluents; BTBP; solvent extraction; side groups; complexes; actinides;

   Sammanfattning : Shortages of fossil fuel and other political movements contributed to the nuclear energy “renaissance”.Nuclear energy, however, is not free of challenges, one of them being nuclear waste management. LÄS MER

7. 5. Kinetic Recognition of Nucleic Acids - Studies on the DNA Binding Selectivity of Threading Ruthenium Complexes

   Författare :Pär Nordell; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; intercalation; circular dicroism; ruthenium complexes; sequence selectivity; fluorescence; DNA; supercoiling; spectroscopy; kinetics;

   Sammanfattning : Despite the great progress in our understanding of DNA during the past half-century, there are many important aspects of its chemical and biological role yet to be explored. The principles by which it selectively interacts with other molecules have attracted much interest due to the relevance for fundamental cellular processes, as well as for the development of diagnostic probes and effective pharmaceutical agents. LÄS MER