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Synthesis of an Open‐Cage Structure POSS Containing Various Functional Groups and Their Effect on the Formation and Properties of Langmuir Monolayers
Author(s) -
Dutkiewicz Michał,
Karasiewicz Joanna,
Rojewska Monika,
Skrzypiec Marta,
Dopierała Katarzyna,
Prochaska Krystyna,
Maciejewski Hieronim
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201602456
Subject(s) - monolayer , langmuir , materials science , molecule , chemical engineering , wetting , substrate (aquarium) , hydrosilylation , chemistry , composite material , nanotechnology , adsorption , organic chemistry , catalysis , oceanography , geology , engineering
Recently, silsesquioxanes have been recognized as a new group of film‐forming materials. This study has been aimed at determining the effect of the kind of functional groups present in two different open‐cage structure POSS molecules on the possibility of the formation of Langmuir monolayers and their properties. To achieve this goal, two new POSS derivatives (of open‐cage structures) containing polyether and fluoroalkyl functional groups have been synthesized on the basis of a hydrosilylation process. An optimization of the process was performed, which makes it possible to obtain the above‐mentioned derivatives with high yields. In the next step, the Langmuir technique was applied to measurements of the surface pressure ( π ) − the mean molecular area ( A ) isotherms during the compression of monolayers formed by molecules of the two POSS derivatives considered. Subsequently, the monolayers were transferred onto quartz plates according to the Langmuir–Blodgett technique. Both derivatives are able to form insoluble Langmuir films at the air–water interface, which can be transferred onto a solid substrate and effectively change its wetting properties.