Exciton coupling chirality in helicene-porphyrin conjugates. Issue 82 (29th September 2021)

• Record Type: Journal Article
• Authors: Dhbaibi, Kais; Matozzo, Paola; Abella, Laura; Jean, Marion; Vanthuyne, Nicolas; Autschbach, Jochen; Favereau, Ludovic; Crassous, Jeanne
• Is Part Of: Chemical communications. Volume 57:Issue 82(2021)
• Page Start: 10743
• Page End: 10746
• Publication Date: 2021-09-29
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc03314j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Helicenes decorated with porphyrines display strong exciton coupling circular dichroism signature in the Soret band and far-red CPL. Abstract : Enantiopure helicene-porphyrin conjugates were prepared. They show strong changes in their circular dichroic response as compared to classical helicene derivatives, with highly intense bisignate Exciton Coupling (EC) signal and Δ ε values up to 680 M −1 cm −1 for the Soret band. They also display circularly polarized fluorescence in the (far-)red region, with dissymmetry factors up to 7 × 10 −4 .