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• W2145057100 abstract "The scope of this work is the investigation of the interactions that appear in molecular switches on noble metal surfaces. The adsorption of two different types of switching molecules is studied by means of near edge X-ray absorption fine structure (NEXAFS) and X-ray photoelectron spectroscopy (XPS). Samples of molecular powders and evaporated molecular multilayers are used as references in which the molecules are decoupled from the surface. The interpretation of the measured data is supported by quantum-chemical calculations based on density-functional theory (DFT), resulting in a deep understanding of the interaction mechanisms. In the first part of this work dimetacyano azobenzene and dimetacarboxymethylester azobenzene are chosen as simple model systems representing the class of conformal switches. These two compounds exhibit the same adsorption behavior and provide complementary information about the adsorption state. Au(111) and Cu(001) are used as substrates with different surface reactivities. On Au(111) at room temperature, azobenzene physisorbs flat in its trans configuration up to a saturation coverage of one monolayer, while the electronic structure of the adsorbate resembles the one calculated for the free molecule. In contrast, on Cu(001) we find that the substrate temperature and the molecule coverage have an influence on the adsorption state. Below half a monolayer evaporated on Cu(001) at 150 K, the majority of azobenzene molecules are found to be in the same physisorbed state as on Au(111). After annealing the substrate above 250 K most of the molecules chemisorb via their azobenzene center, where the frontier orbitals at the azo bridge rehybridize with the substrate orbitals. This interaction forces the molecule to a butterfly-like bent molecular geometry in which the outer aromatic groups are tilted out of the surface plane. In this conformation the lone-pair electrons can participate in the chemical binding, leading to a higher stabilization of the bent structure. The structural reorientation is accompanied by the deoccupation of the bonding and the occupation of the antibonding molecular orbital, which" @default.
• W2145057100 created "2016-06-24" @default.
• W2145057100 creator A5032233253 @default.
• W2145057100 date "2010-01-01" @default.
• W2145057100 modified "2023-09-27" @default.
• W2145057100 title "Switchable molecules on metallic surfaces studied by core-level spectroscopies" @default.
• W2145057100 cites W1608868939 @default.
• W2145057100 cites W1966751543 @default.
• W2145057100 cites W1967065887 @default.
• W2145057100 cites W1967440975 @default.
• W2145057100 cites W1968254879 @default.
• W2145057100 cites W1969849763 @default.
• W2145057100 cites W1970528679 @default.
• W2145057100 cites W1972944758 @default.
• W2145057100 cites W1972962737 @default.
• W2145057100 cites W1977274114 @default.
• W2145057100 cites W1979985686 @default.
• W2145057100 cites W1981368803 @default.
• W2145057100 cites W1983607299 @default.
• W2145057100 cites W1984818886 @default.
• W2145057100 cites W1986340470 @default.
• W2145057100 cites W1986611774 @default.
• W2145057100 cites W1987347836 @default.
• W2145057100 cites W1989036387 @default.
• W2145057100 cites W1990923987 @default.
• W2145057100 cites W1991149034 @default.
• W2145057100 cites W1991802813 @default.
• W2145057100 cites W1995750245 @default.
• W2145057100 cites W1995758612 @default.
• W2145057100 cites W1996960213 @default.
• W2145057100 cites W1999233351 @default.
• W2145057100 cites W1999237594 @default.
• W2145057100 cites W2001619324 @default.
• W2145057100 cites W2002024590 @default.
• W2145057100 cites W2005411141 @default.
• W2145057100 cites W2007799967 @default.
• W2145057100 cites W2008576123 @default.
• W2145057100 cites W2009940778 @default.
• W2145057100 cites W2010304488 @default.
• W2145057100 cites W2010936441 @default.
• W2145057100 cites W2011079470 @default.
• W2145057100 cites W2012145398 @default.
• W2145057100 cites W2013159941 @default.
• W2145057100 cites W2015104075 @default.
• W2145057100 cites W2016632908 @default.
• W2145057100 cites W2016762508 @default.
• W2145057100 cites W2017180092 @default.
• W2145057100 cites W2018373119 @default.
• W2145057100 cites W2021936056 @default.
• W2145057100 cites W2022401266 @default.
• W2145057100 cites W2025335212 @default.
• W2145057100 cites W2026981113 @default.
• W2145057100 cites W2029444367 @default.
• W2145057100 cites W2030131311 @default.
• W2145057100 cites W2030887784 @default.
• W2145057100 cites W2030940040 @default.
• W2145057100 cites W2033330416 @default.
• W2145057100 cites W2034125231 @default.
• W2145057100 cites W2034925608 @default.
• W2145057100 cites W2038159042 @default.
• W2145057100 cites W2039035988 @default.
• W2145057100 cites W2041107461 @default.
• W2145057100 cites W2042986967 @default.
• W2145057100 cites W2043188292 @default.
• W2145057100 cites W2043306025 @default.
• W2145057100 cites W2043929483 @default.
• W2145057100 cites W2045009493 @default.
• W2145057100 cites W2049413581 @default.
• W2145057100 cites W2049634909 @default.
• W2145057100 cites W2050406980 @default.
• W2145057100 cites W2050625784 @default.
• W2145057100 cites W2051750031 @default.
• W2145057100 cites W2052497963 @default.
• W2145057100 cites W2053087501 @default.
• W2145057100 cites W2055067581 @default.
• W2145057100 cites W2056026177 @default.
• W2145057100 cites W2056870506 @default.
• W2145057100 cites W2058400150 @default.
• W2145057100 cites W2060208846 @default.
• W2145057100 cites W2061517793 @default.
• W2145057100 cites W2062878783 @default.
• W2145057100 cites W2063166525 @default.
• W2145057100 cites W2065158110 @default.
• W2145057100 cites W2066198398 @default.
• W2145057100 cites W2068037216 @default.
• W2145057100 cites W2068926457 @default.
• W2145057100 cites W2070983519 @default.
• W2145057100 cites W2071584092 @default.
• W2145057100 cites W2072916332 @default.
• W2145057100 cites W2073058287 @default.
• W2145057100 cites W2074249036 @default.
• W2145057100 cites W2076569656 @default.
• W2145057100 cites W2079331941 @default.
• W2145057100 cites W2079671816 @default.
• W2145057100 cites W2085960467 @default.
• W2145057100 cites W2086180889 @default.
• W2145057100 cites W2088526807 @default.
• W2145057100 cites W2089561401 @default.
• W2145057100 cites W2090208939 @default.
• W2145057100 cites W2092773394 @default.

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