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- Title
Sulfoxide‐Induced Homochiral Folding of <italic>ortho</italic>‐Phenylene Ethynylenes (<italic>o</italic>‐OPEs) by Silver(I) Templating: Structure and Chiroptical Properties.
- Authors
Resa, Sandra; Miguel, Delia; Guisán‐Ceinos, Santiago; Mazzeo, Giuseppe; Choquesillo‐Lazarte, Duane; Abbate, Sergio; Crovetto, Luis; Cárdenas, Diego J.; Carreño, M. Carmen; Ribagorda, María; Longhi, Giovanna; Mota, Antonio J.; Álvarez de Cienfuegos, Luis; Cuerva, Juan M.
- Abstract
Abstract: A new family of homochiral silver complexes based on carbophilic interactions with <italic>ortho</italic>‐phenylene ethynylene (<italic>o</italic>‐OPE) scaffolds containing up to two silver atoms are described. These compounds represent a unique class of complexes with chirality at the metal. Chiral induction is based on the inclusion of chiral sulfoxides, which allow efficient transfer of chirality to the helically folded <italic>o</italic>‐OPE, leading to circularly polarized luminescence (CPL)‐ and vibrational circular dichroism (VCD)‐active compounds. In the presence of silver(I) cations, carbophilic interactions dominate, which promote helical structures with a defined helicity. This is one of the very scarce examples of the use of such interactions in the attractive field of abiotic foldamers. The switching event has been extensively studied by using different chiroptical techniques, including circular dichroism, CPL, and VCD, and represents one of the few CPL switches described in the literature.
- Subjects
SULFOXIDES; PHENYLENE compounds; SILVER compounds; VIBRATIONAL circular dichroism; CHIRALITY
- Publication
Chemistry - A European Journal, 2018, Vol 24, Issue 11, p2653
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201704897