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Self‐Assembly of Tripodal Squaraines: Cation‐Assisted Expression of Molecular Chirality and Change from Spherical to Helical Morphology
Author(s) -
Ajayaghosh Ayyappanpillai,
Chithra Parayalil,
Varghese Reji
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200603611
Subject(s) - chirality (physics) , supramolecular chemistry , morphology (biology) , helicity , crystallography , acetonitrile , chemistry , twist , stereochemistry , materials science , physics , crystal structure , organic chemistry , geometry , biology , mathematics , chiral symmetry breaking , particle physics , quantum mechanics , nambu–jona lasinio model , genetics , quark
Let's do the twist : Tripodal squaraines self‐assemble from acetonitrile to form hollow spheres, the complexation of which with Ca 2+ or Mg 2+ results in extended networks. An analogous chiral dye exhibits a bisignate CD couplet and a helical morphology upon Ca 2+ binding (see figure). Thus, the molecular chirality of a functional dye is expressed through specific cation binding and manifested in the form of supramolecular helicity.