Organic / Inorganic hybrid amphiphiles with bolaform architecture

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2020
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This Ph.D. thesis mention the synthesis and physical properties of catalytic active surfactants. So, bolaamphiphiles showing a probable catalytic active polyoxometalate cluster (POM) and a highly coordinating thiol (SH) group were synthesized. After characterizing their molecular architecture, the physical properties of these compounds in aqueous solutions (i.e. self-assembly behaviour) were investigated. In a second step, these surfactants were coordinated by utilizing the thiol group on the surface of gold nanoparticles, realizing a nano-hybrid catalyst. The resulting catalytic system show a significant improvement of the performance by light irradiation. This improvement is based on a plasmonic enhancement, consisting of three separate effects. First, a nano-heating effect rise the catalytic conversion in accordance to the temperature dependence of the reaction. Additionally, a transfer of stimulated ‘hot electrons’ from the gold nanoparticle to the POM cluster can be strongly assumed. Thereby, the transfer depends on a distance and an electron-conductive parameter, resulting in a maximum of enhancement of 465%.

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Fachgebiet (DDC)
540 Chemie
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Surfactant, plasmonic, catalysis, gold nanoparticle
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ISO 690SUTTER, Sebastian, 2020. Organic / Inorganic hybrid amphiphiles with bolaform architecture [Dissertation]. Konstanz: University of Konstanz
BibTex
@phdthesis{Sutter2020Organ-53136,
  year={2020},
  title={Organic / Inorganic hybrid amphiphiles with bolaform architecture},
  author={Sutter, Sebastian},
  address={Konstanz},
  school={Universität Konstanz}
}
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December 16, 2020
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Konstanz, Univ., Diss., 2020
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