Search for dissertations about: "quinone redox chemistry"

Showing result 1 - 5 of 11 swedish dissertations containing the words quinone redox chemistry.

2. 1. Spectroelectrochemistry of Redox Enzymes

   Author : Andreas Christenson; Centrum för analys och syntes; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Elektrokemi; Electrochemistry; complex II; bilirubin oxidase; laccase; enzyme mechanism; redox potential; electron transfer; spectroelectrochemistry; redox enzymes; Spectroelectrochemical cell;

   Abstract : A low volume and long optical path spectroelectrochemical cell was constructed and tested in a number of applications such as detection of direct electron transfer (DET) between redox enzymes and gold electrodes, determination of the formal potentials of redox centres in proteins and enzymes, as well as mechanistic studies of heterogeneous and intermolecular electron transfer of copper oxidases and succinate:quinine oxidoreductase (Complex II). The existence of DET between enzymes and electrodes was demonstrated for theophylline oxidase, cytochrome P450 cam, laccase, bilirubin oxidase, sulphite oxidase and Complex II. READ MORE

4. 2. Aqueous Organic Redox Flow Batteries - Electrochemical Studies of Quinonoid Compounds

   Author : Cedrik Wiberg; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; quinone; rotating disk electrode voltammetry; diffusion NMR; redox flow battery;

   Abstract : Society faces a large challenge in transitioning to sustainably generating electricity from renewable energy sources such as wind and solar. One of the biggest obstacles to this transition is the intermittence of the sources, leading to a mismatch of supply and demand, a problem most commonly solved by installing large‐scale energy storage. READ MORE

5. 3. Cellular toxicity of quinones : Redox- and addition chemistry

   Author : Karin Öllinger; Linköpings universitet; []
   Keywords : MEDICINE; MEDICIN;

   Abstract : Quinoid compounds are widely occurring in nature. They have cytotoxic properties and they are also used as antineoplastic agents. The cytotoxic properties can be explained by the ability of quinones to generate active oxygen species by redox cycling, by addition to cellular nucleophiles, and by inhibition of DNA transcription. READ MORE

6. 4. Towards quinone/pEDOT conducting redox polymers as energy storage materials

   Author : Huan Wang; Martin Sjödin; Xavier Crispin; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; quinone; conducting redox polymer; doping; capacity; organic battery; polymerization;

   Abstract : With the increased demand for electrical energy storage devices, e.g. electric vehicles and smart grids, organic batteries have caught increasing attention due to their advantages, such as sustainability, environmental friendliness and cheap raw materials over traditional inorganic energy storage materials. READ MORE

7. 5. Exploring amino-acid radicals and quinone redox chemistry in model proteins

   Author : Kristina Westerlund; Cecilia Tommos; Astrid Gräslund; Sara Linse; Stockholms universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; amino-acid radicals; quinone redox chemistry; model proteins; protein redesign; electrochemistry; Biochemistry; Biokemi; biokemi; Biochemistry;

   Abstract : Amino-acid radical enzymes have been studied extensively for 30 years but the experimental barriers to determine the thermodynamic properties of their key radical cofactors are so challenging that only a handful of reports exist in the literature. This is a major drawback when trying to understand the long-range radical transfer and/or catalytic mechanisms of this important family of enzymes. READ MORE