Synthesis of a donor–acceptor heterodimer via trifunctional completive self-sorting

Selective self-assembly of heterodimers consisting of two non-identical subunits plays important roles in Nature but is rarely encountered in synthetic supramolecular systems. Here we show that photocleavage of a donor–acceptor porphyrin complex produces an heterodimeric structure with surprising se...

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Bibliographic Details
Published in:Nature communications 2022-06, Vol.13 (1), p.3204-3204, Article 3204
Main Authors: Kumar, Sunit, Maurya, Yogesh Kumar, Lis, Tadeusz, Stępień, Marcin
Format: Article
Language:English
Subjects:
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639/638/541/966
Binding sites
Degradation products
Experiments
Humanities and Social Sciences
Hydration
Isomers
Ligands
Monomers
multidisciplinary
Oxidation-Reduction
Photooxidation
Porphyrins
Porphyrins - chemistry
Ring opening
Science
Science (multidisciplinary)
Selectivity
Self-assembly
Symmetry
Water
Zinc
Zinc - chemistry
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Summary:Selective self-assembly of heterodimers consisting of two non-identical subunits plays important roles in Nature but is rarely encountered in synthetic supramolecular systems. Here we show that photocleavage of a donor–acceptor porphyrin complex produces an heterodimeric structure with surprising selectivity. The system forms via a multi-step sequence that starts with an oxidative ring opening, which produces an equimolar mixture of two isomeric degradation products (zinc(II) bilatrien- abc -ones, BTOs). These two isomers are susceptible to water addition, yielding the corresponding zinc(II) 15-hydroxybiladien- ab -ones (HBDOs). However, in the photocleavage experiment only one HBDO isomer is formed, and it quantitatively combines with the remaining BTO isomer. The resulting heterodimer is stabilized by a Zn–O coordination bond and extended dispersion interactions between the overlapping π-surfaces of the monomers. The observed selectivity can be seen as a case of completive self-sorting, simultaneously controlled by three types of complementary interactions. The preparation of heterodimeric structures via self-assembly processes is challenging. Here, the authors report the photooxidation of a donor–acceptor metalloporphyrin, which enables a self-sorting process that yields an heterodimer quantitatively.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-022-30859-7