MATEC Web Conf.
Volume 98, 201716th International Conference on Organized Molecular Films (ICOMF16-LB16)
|Number of page(s)||4|
|Section||Langmuir and Langmuir-Blodgett Films|
|Published online||08 February 2017|
Structural Characterization of Self-Organized Mono- and Multilayers of Partly Fluorinated Polydialkoxyphosphazenes at the Air/Water Interface
1 Enikolopov Institute of Synthetic Polymer Materials Russian Academy of Sciences, ul. Profsoyuznaya 70, 117393 Moscow, Russia
2 Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
3 Nesmeyanov Institute of Organo-Element Compounds Russian Academy of Sciences, Vavilova ul. 28, 117991 Moscow, Russia
4 National Research Centre “Kurchatov Institute”, Ak. Kurchatova pl. 1, 123182 Moscow, Russia
* Corresponding author: firstname.lastname@example.org
We report studies of the collapse of monolayers of mesomorphic poly[bis-(2,2,3,3,4,4,5,5-octafluo-ropentoxy)phosphazene] and poly[bis-(2,2,3,3,4,4,5,5,6,6,7,7-dodecafluoroheptoxy)phosphazene]. The structure of the films has been examined at different stages of the collapse process by synchrotron grazing incidence X-ray diffraction. Surface pressure–surface area isotherms show that these films undergo a stepwise collapse with formation of multilayers. Grazing incidence X-ray diffraction reveals only one diffraction peak for the monolayer as well as for multilayers of the two polymers studied, which corresponds to an in-plane interchain spacing d = 15.2±0.1°Å and 17.6±0.5°Å, respectively. The in-plane correlation length ξxy reaches ca. 500 Å for PFP-C5 (33 macromolecules) and ca. 400 Å for PFP-C7 (23 macromolecules), implying a certain mesoscale order similar to a quasi-long-range one.
© The Authors, published by EDP Sciences, 2017
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