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2D spherulites of a semi-fluorinated alkane: controlled access to either radial or ring-banded morphologies

Thin films of a semi-fluorinated alkane cast onto solid substrates consist of well-formed two-dimensional non-birefringent ring-banded and/or radial spherulites. Controlling the experimental conditions allows orientation of the crystallization toward either radial-only or ring-banded-only morphologi...

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Bibliographische Detailangaben
Hauptverfasser: Liu, Xianhe (VerfasserIn) , Mielke, Salomé (VerfasserIn) , Tanaka, Motomu (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2018
In: ChemPhysChem
Year: 2017, Jahrgang: 19, Heft: 1, Pages: 29-33
ISSN:1439-7641
DOI:10.1002/cphc.201701064
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1002/cphc.201701064
Verlag, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/cphc.201701064
Volltext
Verfasserangaben:Xianhe Liu, Salomé Mielke, Christophe Contal, Damien Favier, Akihisa Yamamoto, Motomu Tanaka, and Marie Pierre Krafft
Beschreibung
Zusammenfassung:Thin films of a semi-fluorinated alkane cast onto solid substrates consist of well-formed two-dimensional non-birefringent ring-banded and/or radial spherulites. Controlling the experimental conditions allows orientation of the crystallization toward either radial-only or ring-banded-only morphologies. Intermediate states were also captured in which both radial and ring-banded spherulites coexist. Monitoring of the formation of these intermediate states brought evidence for a first crystallization mode that sweeps radially outwards from a central nucleus until the propagating front edge experiences a second crystallization mode that proceeds through a diffusion-controlled rhythmic crystallization mechanism that leads to high (≈2 μm) concentric ridges. These 2D spherulites were investigated by optical and atomic force microscopies, interferometric profilometry, and off-specular neutron scattering.
Beschreibung:Gesehen am 16.10.2018
First published: 23 October 2017
Beschreibung:Online Resource
ISSN:1439-7641
DOI:10.1002/cphc.201701064

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