Minding our P-block and Q-bands: paving inroads into main group corrole research to help instil broader potential

Abstract

Main group chemistry is often considered less “dynamic” than transition metal (TM) chemistry because of predictable VSEPR-based central atom geometries, relatively slower redox switching and lack of electronic d-d transitions....

Solvent Effects on the Phosphorescence of Gold(III) Complexes Chelated by β-Multisubstituted Corroles

“…The phosphorescence quantum yields of the studied gold corroles were determined using tetraphenylporphyrin as a standard (H 2 TPP, Φ f = 0.13 in toluene at 298 K and N 2 atmosphere): Φ ph ( 4I–Au , 0.75%) > Φ ph ( 4Br–Au , 0.64%) > Φ ph ( 4CF 3 -Au , 0.38%). The Φ ph of 0.38–0.75% is consistent with earlier literature reports. ,, Considering the presence of multiple heavy atoms (gold and halides) and also the large Stokes shifts of 200–270 nm, the yields may actually be considered relatively high.…”

“…As part of the synthesis, analysis, and other determinations, solvent systems and incident light are important factors for corrole research , of importance. We and others have undertaken the synthesis of corrole complexes with 5d metals such as W, Re, Ir, Au, and Os . Photophysical and catalytic investigations have demonstrated that gold­(III) corrole complexes are potentially excellent candidates for versatile applications due to their unique photophysical properties such as near-IR phosphor oxygen sensing, potent pharmaceutical cytotoxic and cytostatic agent administering, and efficient photosensitizing in organic solar cells .…”

“…Three 2,3,17,18-substituted corroles, namely, tetra-β-brominated/iodinated/trifluoromethylated gold corroles (Figure a), were prepared by way of previously published protocols . Typical near-UV (Soret) and far-visible (Q) bands were observed (Figure b).…”

Milestones in corrole chemistry: historical ligand syntheses and post-functionalization

“…20 In recent years, additional reviews have been authored by e.g., (i) Churchill and Gross (2021), which includes a ''white paper'' section to help further flesh out a variety of goals in the post-transition element corrole research area, and by (ii) Pinho e Melo whose coverage extends to both contracted and expanded porphyrins. 16,21 Another recent corrole review was published by Chen et al in 2021. 22 This review, too, in the first half of it, as we do here, underscores both the basic syntheses of importance, as well as research milestones.…”

β-Bis-CF3-substituted phosphorus corroles, theory and experiments

“…Corroles, the one carbon atom short analogs of porphyrins, have received wide research attention in recent years. 1 Main group corroles possess intense fluorescence, large thermal stability/inertness and exhibit electrochemical properties that turns them useful as photosensitisers for PDT (photodynamic therapy) and PDI (photodynamic inactivation), 2 bio-imaging 3 and DSSC (dye-sensitized solar cell), 4 and photoredox catalysis. 5 Functionalization of the beta-pyrrole positions is the most effective strategy to dramatically tune their photophysical and electrochemical properties.…”