Coordination chemistry of expanded porphyrins

Near-infrared dyes for two-photon absorption in the short-wavelength infrared: strategies towards optical power limiting

“…191,192 The chemistry of porphyrinoids and related macrocycles is extremely rich and it is out of the scope of this review to list exhaustively the countless approaches employed to access the many NIR-absorbing candidates. The interested reader is invited to consult the relevant reviews on the topics of Nconfused porphyrins, 193 heteroporphyrins, 194 carbaporphyrins, 195,196 expanded and contracted porphyrins, 185,[197][198][199] porphycenes, 200 subporphyrins, 201 bacteriochlorins 202 and exotic bodipy-based macrocycles. 203…”

Corroles and Hexaphyrins: Synthesis and Application in Cancer Photodynamic Therapy

“…Expanded porphyrins [ 7 , 22 , 23 , 24 ] have gained remarkable attention due to their interesting and versatile features, such as diverse π-conjugation pathways owing to flexible structures [ 25 ], near- infrared (NIR) absorption/emission [ 26 ], facile interconversion between multiple redox states [ 27 ], and multi-metal coordination cavities for various divalent and trivalent metal ions ( Figure 1 ) [ 22 , 28 ]. Beyond the study of these unique properties and their applications, the interest in expanded porphyrins has been focused on exploring the limits to which the classic Hückel definition of aromaticity may be applied.…”

A chromophore-supported structural and functional model of dinuclear copper enzymes, for facilitating mechanism of action studies

“…[36][37][38][39] What is more, bimetallic sapphyrins with metalmetal distances of about 3.3 Å have been reported by Sessler, Neya and our group, but only for heavy (4d and 5d) metal ions-Rh, Ir, and Pd. [40][41][42][43][44][45][46] We now report the first fully characterized 3d complexes of sapphyrins, leading to systems with highly relevant biomimetic Cu2O2 and Cu4O4 clusters, supported by a heme-like chromophore that assists the investigation of catalytic catechol oxidation reactions.…”