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Inside Cover: Toroidal Nanoobjects from Rosette Assemblies of Melamine‐Linked Oligo( p ‐phenyleneethynylene)s and Cyanurates (Angew. Chem. Int. Ed. 25/2008)
Author(s) -
Yagai Shiki,
Mahesh Sankarapillai,
Kikkawa Yoshihiro,
Unoike Kanako,
Karatsu Takashi,
Kitamura Akihide,
Ajayaghosh Ayyappanpillai
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200890118
Subject(s) - supramolecular chemistry , rosette (schizont appearance) , toroid , materials science , melamine , self assembly , crystallography , ring (chemistry) , polymer chemistry , nanotechnology , polymer science , chemistry , composite material , physics , organic chemistry , crystal structure , plasma , quantum mechanics , immunology , biology
Nanodonuts form from hierarchical self‐organization of a melamine featuring π‐conjugated oligo(para‐phenyleneethynylene)s with a cyanurate. The toroidal nanostructures, with a diameter of 40 nm (see AFM image), form in decane under dilute conditions. S. Yagai, A. Ajayaghosh et al. propose in their Communication on page 4691 ff . that a hydrogen‐bonded rosette is an essential intermediate supramolecular species for such a hierarchical self‐organization process. The background picture shows a “bubble ring” made by a scuba diver.