--- _id: '10806' abstract: - lang: eng text: Ligands are a fundamental part of nanocrystals. They control and direct nanocrystal syntheses and provide colloidal stability. Bound ligands also affect the nanocrystals’ chemical reactivity and electronic structure. Surface chemistry is thus crucial to understand nanocrystal properties and functionality. Here, we investigate the synthesis of metal oxide nanocrystals (CeO2-x, ZnO, and NiO) from metal nitrate precursors, in the presence of oleylamine ligands. Surprisingly, the nanocrystals are capped exclusively with a fatty acid instead of oleylamine. Analysis of the reaction mixtures with nuclear magnetic resonance spectroscopy revealed several reaction byproducts and intermediates that are common to the decomposition of Ce, Zn, Ni, and Zr nitrate precursors. Our evidence supports the oxidation of alkylamine and formation of a carboxylic acid, thus unraveling this counterintuitive surface chemistry. acknowledgement: 'This work was financially supported by IST Austria and the Werner Siemens Foundation. M.C. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. The work was also financially supported by University of Basel, SNSF NCCR Molecular Systems Engineering (project number: 182895) and SNSF R’equip (project number: 189622). J.L. is a Serra Húnter Fellow and is grateful to ICREA Academia program and MICINN/FEDER RTI2018-093996-B-C31 and GC 2017 SGR 128 projects.' article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Mariano full_name: Calcabrini, Mariano id: 45D7531A-F248-11E8-B48F-1D18A9856A87 last_name: Calcabrini - first_name: Dietger full_name: Van den Eynden, Dietger last_name: Van den Eynden - first_name: Sergi full_name: Sanchez Ribot, Sergi id: ddae5a59-f6e0-11ea-865d-d9dc61e77a2a last_name: Sanchez Ribot - first_name: Rohan full_name: Pokratath, Rohan last_name: Pokratath - first_name: Jordi full_name: Llorca, Jordi last_name: Llorca - first_name: Jonathan full_name: De Roo, Jonathan last_name: De Roo - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 citation: ama: 'Calcabrini M, Van den Eynden D, Sanchez Ribot S, et al. Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. JACS Au. 2021;1(11):1898-1903. doi:10.1021/jacsau.1c00349' apa: 'Calcabrini, M., Van den Eynden, D., Sanchez Ribot, S., Pokratath, R., Llorca, J., De Roo, J., & Ibáñez, M. (2021). Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. JACS Au. American Chemical Society. https://doi.org/10.1021/jacsau.1c00349' chicago: 'Calcabrini, Mariano, Dietger Van den Eynden, Sergi Sanchez Ribot, Rohan Pokratath, Jordi Llorca, Jonathan De Roo, and Maria Ibáñez. “Ligand Conversion in Nanocrystal Synthesis: The Oxidation of Alkylamines to Fatty Acids by Nitrate.” JACS Au. American Chemical Society, 2021. https://doi.org/10.1021/jacsau.1c00349.' ieee: 'M. Calcabrini et al., “Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate,” JACS Au, vol. 1, no. 11. American Chemical Society, pp. 1898–1903, 2021.' ista: 'Calcabrini M, Van den Eynden D, Sanchez Ribot S, Pokratath R, Llorca J, De Roo J, Ibáñez M. 2021. Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. JACS Au. 1(11), 1898–1903.' mla: 'Calcabrini, Mariano, et al. “Ligand Conversion in Nanocrystal Synthesis: The Oxidation of Alkylamines to Fatty Acids by Nitrate.” JACS Au, vol. 1, no. 11, American Chemical Society, 2021, pp. 1898–903, doi:10.1021/jacsau.1c00349.' short: M. Calcabrini, D. Van den Eynden, S. Sanchez Ribot, R. Pokratath, J. Llorca, J. De Roo, M. Ibáñez, JACS Au 1 (2021) 1898–1903. date_created: 2022-03-02T15:24:16Z date_published: 2021-11-22T00:00:00Z date_updated: 2023-05-05T08:45:36Z day: '22' ddc: - '540' department: - _id: MaIb doi: 10.1021/jacsau.1c00349 ec_funded: 1 file: - access_level: open_access checksum: 1c66a35369e911312a359111420318a9 content_type: application/pdf creator: cchlebak date_created: 2022-03-02T15:33:18Z date_updated: 2022-03-02T15:33:18Z file_id: '10807' file_name: 2021_JACSAu_Calcabrini.pdf file_size: 1257973 relation: main_file success: 1 file_date_updated: 2022-03-02T15:33:18Z has_accepted_license: '1' intvolume: ' 1' issue: '11' keyword: - general medicine language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '11' oa: 1 oa_version: Published Version page: 1898-1903 project: - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program - _id: 9B8F7476-BA93-11EA-9121-9846C619BF3A name: 'HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of Semiconductors for Waste Heat Recovery' - _id: B67AFEDC-15C9-11EA-A837-991A96BB2854 name: IST Austria Open Access Fund publication: JACS Au publication_identifier: eissn: - 2691-3704 issn: - 2691-3704 publication_status: published publisher: American Chemical Society quality_controlled: '1' related_material: link: - relation: earlier_version url: https://doi.org/10.26434/chemrxiv-2021-cn2fr record: - id: '12885' relation: dissertation_contains status: public status: public title: 'Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 1 year: '2021' ...