A Janus carbaporphyrin pseudo-dimer

Haodan He, Jiyeon Lee, Zhaohui Zong, Jiwon Kim, Vincent M. Lynch, Juwon Oh (), Dongho Kim (), Jonathan L. Sessler () and Xian-Sheng Ke ()
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Haodan He: Beijing Normal University
Jiyeon Lee: Yonsei University
Zhaohui Zong: Beijing Normal University
Jiwon Kim: Yonsei University
Vincent M. Lynch: The University of Texas at Austin
Juwon Oh: Soonchunhyang University
Dongho Kim: Yonsei University
Jonathan L. Sessler: The University of Texas at Austin
Xian-Sheng Ke: Beijing Normal University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Carbaporphyrin dimers, investigated for their distinctive electronic structures and exceptional properties, have predominantly consisted of systems containing identical subunits. This study addresses the associated knowledge gap by focusing on asymmetric carbaporphyrin dimers with Janus-like characteristics. The synthesis of a Janus-type carbaporphyrin pseudo-dimer 5 is presented. It displays antiaromatic characteristics on the fused side and nonaromatic behavior on the unfused side. A newly synthesized tetraphenylene (TPE) linked bis-dibenzihomoporphyrin 8 and a previously reported dibenzo[g,p]chrysene (DBC) linked bis-dicarbacorrole 9 were prepared as controls. Comprehensive analyses, including 1H NMR spectral studies, single crystal X-ray diffraction analyses, and DFT calculations, validate the mixed character of 5. A further feature of the Janus pseudo-dimer 5 is that it may be transformed into a heterometallic complex, with one side coordinating a Cu(III) center and the other stabilizing a BODIPY complex. This disparate regiochemical reactivity underscores the potential of carbaporphyrin dimers as versatile frameworks, with electronic features and site-specific coordination chemistry controlled through asymmetry. These findings position carbaporphyrin dimers as promising candidates for advances in electronic structure studies, coordination chemistry, materials science, and beyond.

Date: 2024
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DOI: 10.1038/s41467-024-47239-y

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