8694f05909bfce64a14327905c2abaaf pmc_35207994.pdf d755f32c25226fb97185e05cb899dc784b1defa8 pmc_35207994.pdf 4c35254653660f5ca36551621d077feca065a2feb71524c3f769119aa8c466f5 pmc_35207994.pdf Title: Real-Space Image of Charged Patches in Tunable-Size Nanocrystals Subject: The remarkable dual nature of faceted-charge patchy metal fluoride nanocrystals arises from the spontaneous selective coordination of anionic and cationic ligands on the different facets of the nanocrystals. In previous studies, the identification and origin of the charge at the patches were obtained by combining computer simulations with indirect experimental evidence. Taking a step further, we report herein the first direct real-space identification by Kelvin probe force microscopy of the predicted faceted-charge patchy behavior, allowing the image of the dual faceted-charge surfaces. High-resolution transmission electron microscopy reveals the detailed nanocrystal faceting and allows unambiguously inferring the hydrophilic or hydrophobic role of each facet from the identification of the surface atoms exposed at the respective crystallographic planes. The success of the study lies in a foresighted synthesis methodology designed to tune the nanocrystal size to be suitable for microscopy studies and demanding applications. Keywords: patchy nanocrystals; charged patches; HRTEM; KPFM Author: Jordi Martínez-Esaín, Ana Pérez-Rodríguez, Jordi Faraudo, Esther Barrena, Ramón Yáñez, Carmen Ocal and Susagna Ricart Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Wed Feb 16 03:04:14 2022 CET ModDate: Wed Feb 16 03:19:22 2022 CET Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 11 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 2982424 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- JYPLJJ+VnURWPalladioL-Bold Type 1 Custom yes yes no 10 0 MWHIBA+VnURWPalladioL Type 1 Custom yes yes no 15 0 IJMYLH+URWPalladioL-Bold Type 1 Custom yes yes no 19 0 UGZXNK+URWPalladioL-Roma Type 1 Custom yes yes no 24 0 DICAHN+URWPalladioL-Ital Type 1 Custom yes yes no 28 0 QQOOTE+CMSY10 Type 1 Builtin yes yes no 32 0 MCBCCI+SourceSansRoman-Regular Type 1C Custom yes yes no 40 0 MCBCCM+SourceSansRoman.613wght Type 1C Custom yes yes no 44 0 MCBCCO+SourceSansRoman-Bold Type 1C Custom yes yes no 48 0 YOTXCC+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 61 0 MPUDFL+PazoMath Type 1 Builtin yes yes no 92 0 NWWXFZ+EURM10 Type 1 Builtin yes yes no 96 0 MBGCFL+PalatinoLinotype-Bold CID TrueType Identity-H yes yes yes 120 0 MBGCFM+PalatinoLinotype-Roman CID TrueType Identity-H yes yes yes 126 0 MBGCHN+PalatinoLinotype-Italic CID TrueType Identity-H yes yes yes 132 0 MBGCHO+PalatinoLinotype-Italic TrueType WinAnsi yes yes no 138 0 MBGCHP+PalatinoLinotype-Bold TrueType WinAnsi yes yes no 141 0 MBGCIA+PalatinoLinotype-Roman TrueType WinAnsi yes yes no 144 0 MBGDBN+Calibri CID TrueType Identity-H yes yes yes 147 0 MBGFMN+Cambria CID TrueType Identity-H yes yes yes 153 0 MBGGKJ+SymbolMT CID TrueType Identity-H yes yes yes 159 0 Jhove (Rel. 1.22.1, 2019-04-17) Date: 2023-03-21 02:33:25 CET RepresentationInformation: pmc_35207994.pdf ReportingModule: PDF-hul, Rel. 1.12.1 (2019-04-17) LastModified: 2022-02-27 18:33:14 CET Size: 2982424 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 306 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@44c8afef Item: Title: Materials and Methods Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7b69c6ba Children: Item: Title: Materials Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@46daef40 Item: Title: Nanocrystal Synthesis Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@12f41634 Item: Title: Characterization Techniques Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@13c27452 Item: Title: Results and Discussion Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@262b2c86 Children: Item: Title: Tuning the Size of Patchy LnF3 NCs Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@371a67ec Item: Title: Full Imaging of Patchy LnF3 Nanocrystals Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@5ed828d Item: Title: Conclusions Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@50d0686 Item: Title: References Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7a3d45bd Info: Title: Real-Space Image of Charged Patches in Tunable-Size Nanocrystals Author: Jordi Martínez-Esaín, Ana Pérez-Rodríguez, Jordi Faraudo, Esther Barrena, Ramón Yáñez, Carmen Ocal and Susagna Ricart Subject: The remarkable dual nature of faceted-charge patchy metal fluoride nanocrystals arises from the spontaneous selective coordination of anionic and cationic ligands on the different facets of the nanocrystals. In previous studies, the identification and origin of the charge at the patches were obtained by combining computer simulations with indirect experimental evidence. Taking a step further, we report herein the first direct real-space identification by Kelvin probe force microscopy of the predicted faceted-charge patchy behavior, allowing the image of the dual faceted-charge surfaces. High-resolution transmission electron microscopy reveals the detailed nanocrystal faceting and allows unambiguously inferring the hydrophilic or hydrophobic role of each facet from the identification of the surface atoms exposed at the respective crystallographic planes. The success of the study lies in a foresighted synthesis methodology designed to tune the nanocrystal size to be suitable for microscopy studies and demanding applications. 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