Details

Autor(en) / Beteiligte

• Lee, Yih Hong
• Shi, Wenxiong
• Yang, Yijie
• Kao, Ya‐Chuan
• Lee, Hiang Kwee
• Chu, Rongrong
• Pang, Yee Ling
• Lay, Chee Leng
• Li, Shuzhou
• Ling, Xing Yi

Titel

Modulating Orientational Order to Organize Polyhedral Nanoparticles into Plastic Crystals and Uniform Metacrystals

Ist Teil von

• Angewandte Chemie, 2020-11, Vol.132 (47), p.21369-21375

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2020

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• In nanoparticle self‐assembly, the current lack of strategy to modulate orientational order creates challenges in isolating large‐area plastic crystals. Here, we achieve two orientationally distinct supercrystals using one nanoparticle shape, including plastic crystals and uniform metacrystals. Our approach integrates multi‐faceted Archimedean polyhedra with molecular‐level surface polymeric interactions to tune nanoparticle orientational order during self‐assembly. Experiments and simulations show that coiled surface polymer chains limit interparticle interactions, creating various geometrical configurations among Archimedean polyhedra to form plastic crystals. In contrast, brush‐like polymer chains enable molecular interdigitation between neighboring particles, favoring consistent particle configurations and result in uniform metacrystals. Our strategy enhances supercrystal diversity for polyhedra comprising multiple nondegenerate facets. Gaining control over the orientational order of nanoparticles, and by extension the formation of plastic crystals over large areas, remains challenging. Molecular‐level polymeric surface interactions are now employed to modulate the orientational order of Archimedean nanoparticles. Two orientationally distinct supercrystals are formed using a single nanoparticle shape, including plastic crystals and uniform metacrystals.