Räupke, André ; Albrecht, Fabian ; Maibach, Julia ; Behrendt, Andreas ; Polywka, Andreas ; Heiderhoff, Ralf ; Helzel, Jonatan ; Rabe, Torsten ; Johannes, Hans-Hermann ; Kowalsky, Wolfgang ; Mankel, Eric ; Mayer, Thomas ; Görrn, Patrick ; Riedl, Thomas (2014)
Conformal and Highly Luminescent Monolayers of Alq3 Prepared by Gas-Phase Molecular Layer Deposition.
In: ACS Applied Materials & Interfaces, 6 (2)
doi: 10.1021/am404918g
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The gas-phase molecular layer deposition (MLD) of conformal and highly luminescent monolayers of tris(8-hydroxyquinolinato)aluminum (Alq3) is reported. The controlled formation of Alq3 monolayers is achieved for the first time by functionalization of the substrate with amino groups, which serve as initial docking sites for trimethyl aluminum (TMA) molecules binding datively to the amine. Thereby, upon exposure to 8-hydroxyquinoline (8-HQ), the self-limiting formation of highly luminescent Alq3 monolayers is afforded. The growth process and monolayer formation were studied and verified by in situ quartz crystal monitoring, optical emission and absorption spectroscopy, and X-ray photoelectron spectroscopy. The nature of the MLD process provides an avenue to coat arbitrarily shaped 3D surfaces and porous structures with high surface areas, as demonstrated in this work for silica aerogels. The concept presented here paves the way to highly sensitive luminescent sensors and dye-sensitized metal oxides for future applications (e.g., in photocatalysis and solar cells).
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Räupke, André ; Albrecht, Fabian ; Maibach, Julia ; Behrendt, Andreas ; Polywka, Andreas ; Heiderhoff, Ralf ; Helzel, Jonatan ; Rabe, Torsten ; Johannes, Hans-Hermann ; Kowalsky, Wolfgang ; Mankel, Eric ; Mayer, Thomas ; Görrn, Patrick ; Riedl, Thomas |
| Art des Eintrags: | Bibliographie |
| Titel: | Conformal and Highly Luminescent Monolayers of Alq3 Prepared by Gas-Phase Molecular Layer Deposition |
| Sprache: | Englisch |
| Publikationsjahr: | 22 Januar 2014 |
| Verlag: | ACS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ACS Applied Materials & Interfaces |
| Jahrgang/Volume einer Zeitschrift: | 6 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1021/am404918g |
| Kurzbeschreibung (Abstract): | The gas-phase molecular layer deposition (MLD) of conformal and highly luminescent monolayers of tris(8-hydroxyquinolinato)aluminum (Alq3) is reported. The controlled formation of Alq3 monolayers is achieved for the first time by functionalization of the substrate with amino groups, which serve as initial docking sites for trimethyl aluminum (TMA) molecules binding datively to the amine. Thereby, upon exposure to 8-hydroxyquinoline (8-HQ), the self-limiting formation of highly luminescent Alq3 monolayers is afforded. The growth process and monolayer formation were studied and verified by in situ quartz crystal monitoring, optical emission and absorption spectroscopy, and X-ray photoelectron spectroscopy. The nature of the MLD process provides an avenue to coat arbitrarily shaped 3D surfaces and porous structures with high surface areas, as demonstrated in this work for silica aerogels. The concept presented here paves the way to highly sensitive luminescent sensors and dye-sensitized metal oxides for future applications (e.g., in photocatalysis and solar cells). |
| Freie Schlagworte: | molecular layer deposition, Alq3, surface functionalization, sensitized surfaces, gas-phase deposition |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 27 Feb 2015 09:44 |
| Letzte Änderung: | 29 Mär 2015 16:23 |
| PPN: | |
| Sponsoren: | We thank the German Federal Ministry for Education and Research (grant no. 13N11262) for financial support., P.G. acknowledges funding by the Emmy-Noether-Programm of the DFG (Deutsche Forschungsgemeinschaft). |
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