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Post-Installation of Fused Benzoheptagons at the Periphery of NiII Porphyrins: Helical Structures and Conformation-Adjustable Fullerenes Binding
Ist Teil von
Chemistry : a European journal, 2023-10, Vol.29 (59), p.e202301955-e202301955
Ort / Verlag
Germany: Wiley Subscription Services, Inc
Erscheinungsjahr
2023
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
Fused-benzoheptagon-installed NiII porphyrins were synthesized by a protocol consisting of (2-formyl)arylation at the meso-position(s) of NiII porphyrins, conversion of formyl group to methoxyethene group by Wittig reaction, and final Bi(OTf)3-catalyzedcyclization. The structures of these porphyrins have been revealed by X-ray analysis. Owing to the installed heptagon ring(s), these porphyrins show curved structures with conformational flexibility. Dimer 9 has been shown to have a small activation barrier for inversion and to capture C60 and C70 with large association constants with adjustable conformational changes.