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Shin, Tae Joo
UNIST Synchrotron Radiation Research Laboratory
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  • Synchrotron Radiation Application Researches

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Directing Polymorphism in the Helical Nanofilament Phase

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Title
Directing Polymorphism in the Helical Nanofilament Phase
Author
Park, WongiYang, MinyongPark, HyewonWolska, Joanna M.Ahn, HyungjuShin, Tae JooPociecha, DamianGorecka, EwaYoon, Dong Ki
Issue Date
2021-03
Publisher
WILEY-V C H VERLAG GMBH
Citation
CHEMISTRY-A EUROPEAN JOURNAL
Abstract
Herein, it is reported that the polymorphism in the helical nanofilament (HNF, B-4) liquid-crystalline phase depends on the fabrication methods, that is, UV-driven formation and template-assisted self-assembly in the nanoconfined geometry. As a result, uniaxially oriented HNFs with different helical structures were obtained, in which generation of the twisted-ribbon and cylindrical-ribbon polymorphs showed that even the molecular lattice has a different orientation. The detailed structures were directly observed by SEM and grazing-incidence X-ray diffraction with synchrotron radiation. The resultant polymorphs could be used in chiro-optical applications due to the capability for fine control of the helical structures.
URI
https://scholarworks.unist.ac.kr/handle/201301/52690
URL
https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/chem.202005221
DOI
10.1002/chem.202005221
ISSN
0947-6539
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