Exploring the Association of Electron‐Donating Corroles with Phthalocyanines as Electron Acceptors. Issue 13 (10th February 2022)

• Record Type: Journal Article
• Authors: Platzer, Benedikt; Berionni Berna, Beatrice; Bischetti, Martina; Cicero, Daniel O.; Paolesse, Roberto; Nardis, Sara; Torres, Tomás; Guldi, Dirk M.
• Is Part Of: Chemistry. Volume 28:Issue 13(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-02-10
• Subjects: electron transfer -- organic photovoltaics -- porphyrinoids -- supramolecular chemistry; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202103891
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Electron‐donating corroles (Cor) were integrated with electron‐accepting phthalocyanines (Pc) to afford two different non‐covalent Cor ⋅ Pc systems. At the forefront was the coordination between a 10‐ meso ‐pyridine Cor and a ZnPc. The complexation was corroborated in a combination of NMR, absorption, and fluorescence assays, and revealed association with binding constants as high as 10 6 m −1 . Steady‐state and time‐resolved spectroscopies evidenced that regardless of exciting Cor or Pc, the charge‐separated state evolved efficiently in both cases, followed by a slow charge‐recombination to reinstate the ground state. The introduction of non‐covalent linkages between Cor and Pc induces sizeable differences in the context of light harvesting and transfer of charges when compared with covalently linked Cor‐Pc conjugates. Abstract : Non‐covalent corrole‐(Zn)phthalocyanine conjugates were afforded by mixing electron‐donating 10‐ meso ‐pyridine corroles with an electron‐accepting phthalocyanine. Investigation of the complexation by NMR, absorption, and fluorescence essays revealed binding constants as high as 10 6 m −1 . Introducing non‐covalent corrole‐phthalocyanine linkages induces sizeable differences in the context of light harvesting and charge‐transfer when compared to covalently linked equivalents.