Multicore Iron Oxide Mesocrystals Stabilized by a Poly(phenylenepyridyl) Dendron and Dendrimer: Role of the Dendron/Dendrimer Self-Assembly

作者：Morgan David Gene; Boris Bethany S; Kuchkina Nina V; Yuzik Klimova Ekaterina Yu; Sorokina Svetlana A; Stein Barry D; Svergun Dmitri I; Spilotros Alessandro; Kostopoulou Athanasia; Lappas Alexandros; Shifrina Zinaida B^*; Bronstein Lyudmila M

来源：Langmuir, 2014, 30(28): 8543-8550.

DOI：10.1021/la502409r

We report the formation of multicore iron oxide mesocrystals using the thermal decomposition of iron acetyl acetonate in the presence of the multifunctional and rigid poly(phenylenepyridyl) dendron and dendrimer. We thoroughly analyze the influence of capping molecules of two different architectures and demonstrate for the first time that dendron/dendrimer self-assembly leads to multicore morphologies. Single-crystalline ordering in multicore NPs leads to cooperative magnetic behavior: mesocrystals exhibit ambient blocking temperatures, allowing subtle control over magnetic properties using a minor temperature change.

• 出版日期2014-7-22