Chiral memory via chiral amplification and selective depolymerization of porphyrin aggregates

F.A. Helmich, C.C. Lee, A.P.H.J. Schenning, E.W. Meijer

Research output: Contribution to journalArticleAcademicpeer-review

72 Citations (Scopus)

Abstract

Chiral memory at the supramolecular level is obtained via a new approach using chiral Zn porphrins and achiral Cu porphyrins. In a "sergeant-and-soldiers" experiment, the Zn "sergeant" transfers its own chirality to Cu "soldiers" and, after chiral amplification, the "sergeant" is removed from the coaggregates by axial ligation with a Lewis base. After this extraction, the preferred helicity observed for the aggregates containing achiral Cu porphyrins reveals a chiral memory effect that is stable and can be erased and partially restored upon subsequent heating and cooling.
Original languageEnglish
Pages (from-to)16753-16755
JournalJournal of the American Chemical Society
Volume132
Issue number47
DOIs
Publication statusPublished - 2010

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