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The functionalization of nanodiamonds (diamondoids) as a key parameter of their easily controlled self-assembly in micro- and nanocrystals from the vapor phase

Gunawan, Maria A. ; Poinsot, Didier ; Domenichini, Bruno ; Dirand, Celine ; Chevalier, Sebastien ; Fokin, Andrey A. ; Schreiner, Peter R. ; Hierso, Jean-Cyrille

Originalveröffentlichung: (2014) Nanoscale 7(5):1956-1962 doi:10.1039/C4NR04442H
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URN: urn:nbn:de:hebis:26-opus-114076

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Sammlung: RSC Open Access Artikel
Universität Justus-Liebig-Universität Gießen
Institut: Institut für Organische Chemie
Fachgebiet: Chemie
DDC-Sachgruppe: Chemie
Dokumentart: Aufsatz
Sprache: Englisch
Erstellungsjahr: 2014
Publikationsdatum: 25.03.2015
Kurzfassung auf Englisch: We detail herein readily accessible processes to control previously unobserved robust self-assemblies of nanodiamonds (diamondoids) in micro- and nanocrystals from their mild vapor deposition. The chemical functionalization of uniform and discernible nanodiamonds was found to be a key parameter, and depending on the type of functional group (hydroxy, fluorine, etc.) and its position on the diamondoid, the structure of the discrete deposits can vary dramatically. Thus, well-defined anisotropic structures such as rod, needle, triangle or truncated octahedron shapes can be obtained, and self-assembled edifices of sizes ranging from 20 nm to several hundred micrometers formed with conservation of a similar structure for a given diamondoid. Key thermodynamic data including sublimation enthalpy of diamondoid derivatives are reported, and the SEM of the self-assemblies coupled with EDX analyses and XRD attest the nature and purity of nanodiamond crystal deposits. This attractive method is simple and outperforms in terms of deposit quality dip-coating methods we used. This vapor phase deposition approach is expected to allow for an easy formation of diamondoid nanoobjects on different types of substrates.
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