Sökning: "On-surface synthesis"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden On-surface synthesis.

  1. 1. Mechanistic investigations of chemical reactions on 2D MXenes and metal surfaces from first-principles

    Författare :Kaifeng Niu; Jonas Björk; Johanna Rosén; Lifeng Chi; Daniele Passerone; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Density functional theory; 2D MXenes; On-surface synthesis; C-H activation; Electrochemical nitrogen reduction;

    Sammanfattning : Chemical reactions on surfaces play a central role both for our daily life and industrial purposes, including the storage and release of energy, as well as the formation of new materials. To achieve high efficiency, catalysis lies in the heart of chemical reactions as it plays a critical role in accelerating the chemical transformation to target products. LÄS MER

  3. 2. Combinatorial Synthesis of Pilicides

    Författare :Anette Svensson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; gel-phase 19F NMR spectroscopy; fluorinated linkers; E. coli bacteria; pilicides; combinatorial chemistry; solid-phase synthesis; Organic chemistry; Organisk kemi;

    Sammanfattning : This thesis describes a combinatorial approach to design and synthesis of three libraries of compounds, referred to as pilicides, designed to target periplasmic chaperones present in uropathogenic Escherichia coli bacteria that are the main cause of urinary tract infections. Periplasmic chaperones are required for assembly of adhesive organelles, i. LÄS MER

  4. 3. Design and synthesis of glycose-derivatives and related molecules for cell membrane mimetics

    Författare :Jing Shi; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : A series of glucopyranose (α-D-glucose, β-D-glucose, D-gluconic acid and 6-amino-6-deoxy-D-glocuse) terminated alkanethiol acetals have been successfully synthesized. α and β-D-glucose were configured in controlled ways coupling with alkanethiol, in which bromosugar and trichloroacetirnidates were selected as activated glycosyl donors using different promoters tetraalkylammonium bromide (Et4NBr) and trimethylsilanetriflate (TMSOTf) respectively. LÄS MER

  5. 4. Structure and Dynamics of Silica Dispersions and Gels

    Författare :Jonas Nordström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aging; Photon correlation spectroscopy; sodium silicate; lithium electrolytes; water glass; fumed silica; sol-gel transition;

    Sammanfattning : This thesis deal with the sol-gel transition of two quite different systems, both based on silica. The overall aim is to understand what interactions lead to this sol-gel transition and how the structure and dynamics change as a result of this.The first project concern the gelation of water glass, also known as alkaline sodium silicate solutions. LÄS MER

  7. 5. Acidification trends in Swedish lakes : an assessment of past water chemistry conditions using lake sediments

    Författare :Tom Korsman; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Palaeolimnology; acidification history; alkalization; acid deposition; land-use; lake sediments; near infrared spectroscopy; diatoms; multivariate calibration; Sweden;

    Sammanfattning : This thesis presents temporal perspectives of lake acidification in Sweden. Sediment records have been used to study timing, trends and causes of acidification, and two different techniques for assessing past lake-water acidity are presented. LÄS MER