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240713s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.4c01445
|2 doi
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|a pubmed24n1497.xml
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|a (NLM)38995738
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Morgenstern, Annika
|e verfasserin
|4 aut
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| 245 |
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|a Anchoring Atomically Precise Chiral Bismuth Oxido Nanoclusters on Gold
|b The Role of Amino Acid Linkers
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 10.08.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The adsorption of chiral molecules onto metallic surfaces triggers electron spin polarization at the interface, paving the way for applications in chiral opto-spintronics. However, the spin effects sensitively depend on the binding and ordering of the chiral species on surfaces. This study explores the adsorption of chiral thioether-functionalized atomically precise bismuth oxido nanoclusters (BiO-NCs) on gold (Au) surfaces, extending the conventional approach of using thiol-containing molecules and complexes to nanoclusters. Starting from the precursor [Bi38O45(NO3)20(dmso)28](NO3)4·4dmso (A), chiral BiO-NCs were synthesized by substituting the nitrates with N-(tert-butoxycarbonyl)-l-methionine (Boc-l-Met-O-) ligands to obtain [Bi38O45(Boc-l-Met-O)24] (2). The full exchange of nitrate by the Boc-l-methionine ligand was demonstrated by powder X-ray diffractograms, dynamic light scattering, electrospray ionization mass spectrometry, nuclear magnetic resonance, infrared, circular dichroism, and X-ray photoelectron spectroscopy. Compared to previously reported [Bi38O45(Boc-l-Phe-O)24(dmso)9] (1), BiO-NC 2 shows differences in the growth mode on a Au surface as revealed by scanning electron microscopy, wherefore a stronger binding of BiO-NC 2 is assumed. Anchoring of BiO-NC 2 to the Au surface through thioether groups induced a discernible change in the optical response of the Au surface analyzed by spectroscopic ellipsometry (SE). From the numerical modeling of the SE parameters, a layer thickness of ∼2 nm, corresponding to a monolayer of BiO-NC 2, was estimated for the samples prepared by dip coating. Thus, strong adsorption of BiO-NC 2 to the Au surface is concluded, which is an essential prerequisite for chiral-induced interface spin polarization
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|a Journal Article
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1 |
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|a Thomas, Rico
|e verfasserin
|4 aut
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1 |
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|a Selyshchev, Oleksandr
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Weber, Marcus
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tegenkamp, Christoph
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zahn, Dietrich R T
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mehring, Michael
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Salvan, Georgeta
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 40(2024), 31 vom: 06. Aug., Seite 16320-16329
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:40
|g year:2024
|g number:31
|g day:06
|g month:08
|g pages:16320-16329
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|u http://dx.doi.org/10.1021/acs.langmuir.4c01445
|3 Volltext
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