Frank-Kasper mesoatomic crystals from apex-dependent dendron assembly
발표자
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초록
내용
We design and present a strategy to create Frank-Kasper (FK) phases from simple second-generation (G2) dendrons possessing different apex functionalities (Xs) that modulate core interactions among the apex groups. The dendrons of G2-X were synthesized by a convergent method and post-functionalized at terminal X to have CONH2, CH2OH, and CH2NH2 which are in decreasing order of core interactions (or H-bonding). With a versatile modular platform of G2-X, we seek to answer a question about how enthalpic and entropic contributions affect dendron assemblies. In-situ small-angle X-ray scattering (SAXS) and FT-IR spectroscopy are measured to trace temperature-dependent assembly phases with respect to the core interactions.