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Nonlinear optical response of photochromic azobenzene-functionalized self-assembled monolayers

  • The combination of photochromic and nonlinear optical (NLO) properties of azobenzene-functionalized self-assembled monolayers (SAMs) constitutes an intriguing step towards novel photonic and optoelectronic devices. By utilizing the second-order NLO process of second harmonic generation (SHG), supported by density-functional theory and correlated wave function method calculations, we demonstrate that the photochromic interface provides the necessary prerequisites en route towards possible future technical applications: we find a high NLO contrast on the order of 16% between the switching states. These are furthermore accessible reversibly and with high efficiencies in terms of cross sections on the order of 10−18 cm2 for both photoisomerization reactions, i.e., drivable by means of low-power LED light sources. Finally, both photostationary states (PSSs) are thermally stable at ambient conditions.

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Author:Michael Schulze, Manuel Utecht, Thomas Moldt, Daniel Przyrembel, Cornelius Gahl, Martin Weinelt, Peter SaalfrankORCiDGND, Petra TegederORCiDGND
Series (Serial Number):Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (196)
Document Type:Postprint
Year of Completion:2015
Publishing Institution:Universität Potsdam
Release Date:2015/09/25
Source:Phys. Chem. Chem. Phys., 2015,17, 18079-18086 - DOI: 10.1039/C5CP03093E
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
Publication Way:Open Access
Licence (English):License LogoCreative Commons - Attribution 3.0 Unported
Notes extern:Bibliographieeintrag der Originalveröffentlichung/Quelle