Tip-enhanced Raman scattering unraveling molecular interactions in individual carbon nanotube systems
Final Report Abstract
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.
Publications
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Capillary Stamping of Functional Materials: Parallel Additive Substrate Patterning without Ink Depletion. Advanced Materials Interfaces, 8(5).
Runge, Mercedes; Hübner, Hanna; Grimm, Alexander; Manoharan, Gririraj; Wieczorek, René; Philippi, Michael; Harneit, Wolfgang; Meyer, Carola; Enke, Dirk; Gallei, Markus & Steinhart, Martin
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Click Functionalization of Carbon Nanotubes for Nano-Bio Applications, doctoral thesis Universität Osnabrück, Nov. 2021
G. Manoharan
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Click-Functionalization of Silanized Carbon Nanotubes: From Inorganic Heterostructures to Biosensing Nanohybrids. Molecules, 28(5), 2161.
Manoharan, Gririraj; Bösel, Petra; Thien, Jannis; Holtmannspötter, Michael; Meingast, Laura; Schmidt, Mercedes; Eickmeier, Henning; Haase, Markus; Maultzsch, Janina; Steinhart, Martin; Wollschläger, Joachim; Palma, Matteo & Meyer, Carola
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Independent and coherent transitions between antiferromagnetic states of few-molecule systems. Physical Review B, 107(24).
Besson, Claire; Stegmann, Philipp; Schnee, Michael; Zanolli, Zeila; Achilli, Simona; Wittemeier, Nils; Vierck, Asmus; Frielinghaus, Robert; Kögerler, Paul; Maultzsch, Janina; Ordejón, Pablo; Schneider, Claus M.; Hucht, Alfred; König, Jürgen & Meyer, Carola
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Simultaneous Inside and Outside Functionalization of Single‐Walled Carbon Nanotubes. Angewandte Chemie International Edition, 63(20).
Kraus, Jan; Meingast, Laura; Hald, Janina; Beil, Sebastian B.; Biskupek, Johannes; Ritterhoff, Christian L.; Gsänger, Sebastian; Eisenkolb, Jasmin; Meyer, Bernd; Kaiser, Ute; Maultzsch, Janina von & Delius Max
