Előadó: Ana Cadena (SZFI)
Előadás címe: Organic Molecules Encapsulated in Nanotubes: Encapsulation Methods and Chemical Reactions - PhD házi védés
Dátum: 2023. június 23. 10:00
Helyszín: 1-es épület, 2. emeleti Tanácsterem,
illetve online: Join Zoom Meeting
https://wigner-hu.zoom.us/j/82949890730?pwd=M2V3YzlIQ0xleExKRGdEZHo5dUR…
Meeting ID: 829 4989 0730
Passcode: 771944
Összefoglaló:
Sexithiophene molecules are encapsulated using two encapsulation methods: one usually used in the literature which requires high temperature, and another using supercritical carbon dioxide at low temperature. It is shown how polymerization occurs during the encapsulation using the high temperature method. Additionally, as this precursor has similar characteristics to graphene nanoribbon (GNR) precursors, their synthesis is attempted from this molecule. However, it could be evidenced that this molecule does not form GNRs. The synthesis of graphene nanoribbons is reported from a new precursor 1,2,4-trichlorobenzene. This precursor is a liquid and has several advantages for encapsulation and product formation. Graphene nanoribbons several nanometers long are prepared inside single-walled carbon nanotubes and the 6-armchair graphene nanoribbon is detected. The above synthesis is also performed in boron nitride nanotubes where the nanoribbon formation has not been as successful so far as inside carbon nanotubes. The significance of producing graphene nanoribbons using boron nitride nanotubes lies in the transparent nature of these tubes which, contrary to carbon nanotubes, allows obtaining information of the reaction products in a wide optical range.
