Nanostructured block-random copolymers with tunable magnetic properties.
作者： Yongping Zha , Hitesh D. Thaker , Raghavendra R. Maddikeri , Samuel P. Gido , Mark T. Tuominen
DOI: 10.1021/JA305249B
关键词:
摘要: It was recently shown that block copolymers (BCPs) produced room-temperature ferromagnetic materials (RTFMs) due to their nanoscopic ordering and the cylindrical phase yielded highest coercivity. Here, a series of metal-containing block-random composed an alkyl-functionalized homo (C16) random cobalt complex- (Co) ferrocene-functionalized (Fe) units synthesized via ring-opening metathesis polymerization. Taking advantage architecture, influence dipolar interactions on magnetic properties these nanostructured BCP studied by varying molar ratio Co Fe units, while maintaining phase-separated morphology. DC measurements, including magnetization versus field, zero-field-cooled, field-cooled, as well AC susceptibility measurements showed could be easily tuned diluting density with u...
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