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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c02651
|2 doi
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|a eng
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| 100 |
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|a Arndt, Niklas B
|e verfasserin
|4 aut
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| 245 |
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|a Self-Assembled Monolayers of Arylazopyrazoles on Glass and Silicon Oxide
|b Photoisomerization and Photoresponsive Wettability
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 18.01.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Surface coatings that respond to external influences and change their physical properties upon application of external stimuli are of great interest, with light being a particularly desirable choice. Photoswitches such as azobenzenes have been employed in a range of photoresponsive coatings. One striking change in physical property of many photoresponsive coatings is their responsive wettability upon illumination. In this work, we present photoswitchable self-assembled monolayers based on arylazopyrazoles (AAPs). In solution, AAPs offer significant improvements in terms of the photostationary state, thermal stability, and fatigue resistance. The AAP photoswitch is coupled to triethoxysilanes for an easy, one-step functionalization of glass and silicon oxide surfaces. We show the synthesis of AAP-based silanes and the successful surface functionalization, and we confirm the excellent photoswitchability of the AAPs in a self-assembled monolayer upon alternating irradiation with UV (365 nm) and green (520 nm) light. The self-assembled monolayers are investigated by UV/vis spectroscopy, X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and contact angle goniometry. We furthermore investigate the effect of substitution of the AAPs on the photoresponsive wetting behavior and compare this with density functional theory (DFT) calculations of the dipole moments of the AAPs
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|a Journal Article
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|a Schlüter, Friederike
|e verfasserin
|4 aut
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| 700 |
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|a Böckmann, Marcus
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Adolphs, Thorsten
|e verfasserin
|4 aut
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| 700 |
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|a Arlinghaus, Heinrich F
|e verfasserin
|4 aut
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| 700 |
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|a Doltsinis, Nikos L
|e verfasserin
|4 aut
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| 700 |
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|a Ravoo, Bart Jan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 2 vom: 18. Jan., Seite 735-742
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:38
|g year:2022
|g number:2
|g day:18
|g month:01
|g pages:735-742
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|u http://dx.doi.org/10.1021/acs.langmuir.1c02651
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