Structural characterization of the Fddd phase in a diblock copolymer thin film by electron microtomography

作者: Jueun Jung , Hae-Woong Park , Junyoung Lee , Haiying Huang , Taihyun Chang

DOI: 10.1039/C1SM06236K

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摘要: A 3-dimensional Fddd network structure of a polystyrene-block-polyisoprene (PS-b-PI) diblock copolymer (Mn = 31500, fPI 0.645) was observed for the first time in real space by transmission electron microtomography (TEMT). In 650 nm thick film PS-b-PI thin on silicon wafer, phase developed after annealing at 215 °C 24 h. The single consists connected tripodal units minor PS block domains. {111}Fddd plane, densest plane phase, found to orient parallel plane. transitional from wetting layer free surface internal via perforated also observed.

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