Untersuchung des elektrischen Transports durch photochrome Moleküle bei plasmonischer Anregung
Organische Molekülchemie - Synthese, Charakterisierung
Physikalische Chemie von Festkörpern und Oberflächen, Materialcharakterisierung
Zusammenfassung der Projektergebnisse
Our work was dealing with molecular switches made of diarylethene (DAE) molecules, whose state is controlled by the illumination: UV light triggers ring closure in the molecule and switches to the conductive state and visible light triggers the reverse. We have explored how the plasmon waves, both SPP and LSPR waves, influence the switching of DAE. Although not all initial project goals could be achieved, we estimate the following partial results as being the key results: Installation of a hypermicroscopy setup. The French partners have installed a state-of-the art dark-field optical microscope optimized for plasmonic nanoparticles. The combination with the AFM expertise allows unprecedented characterization where the optical signature is correlated to the topography acquired with AFM. - MCBJ junction under plasmonic excitation. The German partners demonstrated the concept of break junction experiments under plasmonic excitation. The setup will produce very exciting data, when the correct molecular system will be found (a molecule, that can switch when adsorbed on the electrode, and with sufficiently high conductance difference between two conformations). - Method for probing the quenching effect of metallic electrode on photoactivated molecular switches. The issue of quenching is a vivid one for photoactivated molecules. We have set up a methodology to assess this quenching, by measuring the plasmon shift induced by the switching of the molecules. This could be reproduced to select the ideal molecular switch in the future.
Projektbezogene Publikationen (Auswahl)
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Geodesic‐Planar Conjugates: Substituted Buckybowls—Synthesis, Photoluminescence and Electrochemistry. Chemistry – A European Journal, 26(72), 17546-17558.
Bayer, Johannes; Herberger, Jan; Holz, Lukas; Winter, Rainer F. & Huhn, Thomas
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Gold Nanoparticle Self-Aggregation on Surface with 1,6-Hexanedithiol Functionalization. Nanomaterials, 10(3), 512.
Stetsenko, Maksym; Margitych, Tetiana; Kryvyi, Serhii; Maksimenko, Lidia; Hassan, Ali; Filonenko, Svitlana; Li, Βaikui; Qu, Junle; Scheer, Elke & Snegir, Sergii
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Ultraviolet Deactivation of Silane-Functionalized Surfaces: A Scalable Approach for Patterned Nanoparticle Assembly. The Journal of Physical Chemistry C, 124(35), 19259-19266.
Snegir, Sergii; Huhn, Thomas; Boneberg, Johannes; Haus, Simon; Pluchery, Olivier & Scheer, Elke
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Where do the counterions go? Tip-induced dissociation of self-assembled triazatriangulenium-based molecules on Au(111). Physical Chemistry Chemical Physics, 23(16), 9930-9937.
Snegir, S.; Dappe, Y. J.; Sysoiev, D.; Pluchery, O.; Huhn, T. & Scheer, E.
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How to Use Localized Surface Plasmon for Monitoring the Adsorption of Thiol Molecules on Gold Nanoparticles?. Nanomaterials, 12(2), 292.
Dileseigres, Angeline S.; Prado, Yoann & Pluchery, Olivier
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Plasmonic phenomena in molecular junctions: principles and applications. Nature Reviews Chemistry, 6(10), 681-704.
Wang, Maoning; Wang, Tao; Ojambati, Oluwafemi S.; Duffin, Thorin Jake; Kang, Keehoon; Lee, Takhee; Scheer, Elke; Xiang, Dong & Nijhuis, Christian A.
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Diaryléthènes utilisés comme interrupteurs moléculaires pour la connexion de nanoparticules d'or, Doctoral Thesis, Sorbonne Université, Paris
A. Dileseigres
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Non-symmetrical diarylethenes with turn-on mode fluorescence & Photochromic surface ligands for gold nanoparticles and 2D superconductors, Doctoral Thesis, Universiät Konstanz
L. Holz
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Nonuniform STM Contrast of Self-Assembled Tri-n-octyl-triazatriangulenium Tetrafluoroborate on HOPG. ACS Omega, 8(41), 38766-38772.
Snegir, Sergii; Dappe, Yannick J.; Sysoiev, Dmytro; Huhn, Thomas & Scheer, Elke
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Hyperspectral dark-field optical microscopy correlated to atomic force microscopy for the analysis of single plasmonic nanoparticles: tutorial. Journal of the Optical Society of America B, 41(8), 1678.
Abadie, Claire; Liu, Mingyang; Prado, Yoann & Pluchery, Olivier
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Tuning and Modulation of the Photoinduced Current by Rectification of Surface Plasmons in Metal–Molecule–Nanoparticle–ITO Composite Junctions. The Journal of Physical Chemistry C, 128(20), 8315-8323.
Wang, Maoning; Barth, Valentin; Snegir, Sergii; Holz, Lukas; Huhn, Thomas; Boneberg, Johannes; Guo, Chenyang; Fu, Mengqi; Xiang, Dong; Leiderer, Paul; Yang, Fan & Scheer, Elke
