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Title
Japanese:An experimental and theoretical investigation into the self-assembly of a chemically modified high-χ coil-rod diblock copolymer 
English:An experimental and theoretical investigation into the self-assembly of a chemically modified high-χ coil-rod diblock copolymer 
Author
Japanese: Lei Dong, Kevin Wylie, Yuta Nabae, Teruaki Hayakawa.  
English: Lei Dong, Kevin Wylie, Yuta Nabae, Teruaki Hayakawa.  
Language English 
Journal/Book name
Japanese:RSC Advances 
English:RSC Advances 
Volume, Number, Page Vol. 12    No. 28    pp. 17950-17958
Published date June 17, 2022 
Publisher
Japanese:The Royal Society of Chemistry 
English:The Royal Society of Chemistry 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://dx.doi.org/10.1039/D2RA02536A
 
DOI https://doi.org/10.1039/D2RA02536A
Abstract A precursor diblock copolymer with a silicon backbone, polystyrene-block-poly(methylvinylsiloxane), was synthesized, and 1H,1H,2H,2H-perfluorodecanethiol was quantitatively introduced into the backbone via a thiol-ene reaction to yield a novel coil窶途od diblock copolymer, poly(styrene-block-poly(2-((3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)thio)ethyl)methylsiloxane). The ultra-hydrophobicity of the introduced perfluoroalkyl side chain enhanced the segregation between counter-blocks and significantly increased the ﾏ� value, which is essential for minimizing the size of self-assembled domains for lithographic applications. Thus, self-assembled domains with a minimal spacing of approximately 10 nm were formed. A hexagonally packed array with significant anisotropy was observed in the self-assembled morphology by small-angle X-ray scattering and transmission electron microscopy. Such an array was precisely reproduced by modified self-consistent field theory (SCFT) calculation developed for the coil窶途od structure. Furthermore, the phase diagram was estimated, and the morphological dependence on the relative scale of the rod unit was investigated by SCFT prediction.

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