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All‐or‐Nothing Cooperative Self‐Assembly of an Annulene Sandwich
Author(s) -
Sprafke Johannes K.,
Odell Barbara,
Claridge Timothy D. W.,
Anderson Harry L.
Publication year - 2011
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.201008087
Subject(s) - nanoring , conjugated system , porphyrin , chemistry , dabco , ring (chemistry) , crystallography , materials science , octane , chemical physics , nanotechnology , photochemistry , polymer , organic chemistry
Ring‐fenced : A 14‐component assembly is formed by coordinating 1,4‐diazabicyclo[2.2.2]octane (DABCO) to a [12]porphyrin nanoring. The 24 zinc–nitrogen interactions in this sandwich complex lock each conjugated macrocycle into a planar conformation, dramatically sharpening the near‐IR absorption band. This result highlights the scope of double‐strand formation as a way of creating nano‐objects with well‐defined shapes.
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