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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1021/acs.chemmater.9b01891
|2 doi
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|a pubmed24n1001.xml
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Peters, J L
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Hybrid Oleate-Iodide Ligand Shell for Air-Stable PbSe Nanocrystals and Superstructures
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|c 2019
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 25.02.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a A postsynthetic treatment is presented to improve the air stability of PbSe nanocrystals (NCs) and PbSe square superstructures. The addition of z-type Pb(oleate)2 ligands together with x-type iodide ligands creates a hybrid ligand shell containing both ligands. The air stability of the PbSe NCs is checked by enduring absorption spectroscopy under ambient conditions. With a combined NaI + Pb(oleate)2 treatment, the absorption spectrum remains unchanged for several days under ambient conditions. Fourier transform infrared spectroscopy shows that the surface coordination of the oleate ligands changes by the chemical treatment: from mixed chelating bidentate + bridging to Pb for the pristine nanocrystals to almost exclusive chelating bidentate coordination after chemical passivation. The shift of the C-H stretching vibration shows that the oleate hydrocarbon layer is in a more liquidlike state after the chemical treatment, suggesting that oleate and iodide ligands are often present on adjacent surface positions
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|a Journal Article
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1 |
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|a van der Bok, J C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hofmann, J P
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Vanmaekelbergh, D
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Chemistry of materials : a publication of the American Chemical Society
|d 1998
|g 31(2019), 15 vom: 13. Aug., Seite 5808-5815
|w (DE-627)NLM098194763
|x 0897-4756
|7 nnns
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| 773 |
1 |
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|g volume:31
|g year:2019
|g number:15
|g day:13
|g month:08
|g pages:5808-5815
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|u http://dx.doi.org/10.1021/acs.chemmater.9b01891
|3 Volltext
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