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Molecular‐Curvature‐Induced Spontaneous Formation of Curved and Concentric Lamellae through Nucleation
Author(s) -
Dong XueHui,
Ni Bo,
Huang Mingjun,
Hsu ChihHao,
Bai Ruobing,
Zhang WenBin,
Shi AnChang,
Cheng Stephen Z. D.
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201510524
Subject(s) - concentric , curvature , silsesquioxane , materials science , nucleation , wedge (geometry) , polymer , chemical physics , nanotechnology , geometry , chemistry , composite material , optics , physics , mathematics , organic chemistry
Spontaneous formation of concentric lamellae was observed in self‐assembling giant surfactants consisting of a fluorinated polyhedral oligomeric silsesquioxane (FPOSS) head and flexible polymer tail(s). Owing to the asymmetrical sizes of the head and tail blocks and the rectangular molecular interface, the giant surfactants assumed a truncated‐wedge‐like molecular shape, which induced morphological curvature during self‐assembly, thus resulting in the formation of curved and concentric lamellae. These curved/concentric lamellae were observed in FPOSS‐based giant surfactants with different architectures and compositions. The spontaneous curvature formation not only promotes our fundamental understanding of assembly principles, but also provides a promising and efficient approach to the fabrication of a wide range of high‐performance devices.