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Projekt Druckansicht

Spitzenverstärkte Ramanstreuung zur Entschlüsselung molekularer Wechselwirkungen in Systemen aus individuellen Kohlenstoff-Nanotubes

Fachliche Zuordnung Experimentelle Physik der kondensierten Materie
Förderung Förderung von 2016 bis 2023
Projektkennung Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 283336994
 
Erstellungsjahr 2024

Zusammenfassung der Projektergebnisse

Understanding nano-electronic devices made from functionalized carbon nanotubes (CNTs) is essential, but traditional methods like transmission-electron microscopy (TEM) are invasive and damaging. Thus, this project explored high-resolution optical alternatives such as tip-enhanced Raman scattering (TERS). We developed a new functionalization route based on click-chemistry to add various molecules to CNTs, enabling different applications like high-resolution optical spectroscopy and dopamine biosensing. We addressed challenges in creating patterning structures for CNT growth to enable the correlation of high-resolution optical characterization and transport measurements by using a direct laser writer and stamping methods. Furthermore, we employed DNA point accumulation in nanoscale topography (DNA-PAINT) on CNTs functionalized with DNA for ultra-high-resolution imaging and successfully demonstrated its feasibility. Confocal Raman scattering was used for chiral-index identification to study a transport device based on CNTs functionalized with anti-ferromagnetic molecules. Quantum transport measurements revealed transitions between molecular spin singlet states. First TERS maps on thin bundles of non-covalently functionalized CNT showed local intensity variations of incorporated iodide chains on a scale of ~10nm.

Projektbezogene Publikationen (Auswahl)

 
 

Zusatzinformationen

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