-Free Porphyrinoids

Abstract

-Unsubstituted (-free) porphyrins have been an effective platform for creating versatile peripherally functionalized porphyrins and directly-linked porphyrin oligomers. The synthetic strategy has been extended to produce -free porphyrinoids including carbaporphyrins, core-modified porphyrins, ring-contracted, and ring-expanded porphyrins. -Free porphyrinoids can serve as a benchmark for demonstrating the inherent physical properties and stabilities, free from the influences of substituents, thereby highlighting the significance of these porphyrinoid classes