Synthesis of five-porphyrin nanorings by using ferrocene and corannulene templates

The smallest and most strained member of a family of π-conjugated cyclic porphyrin oligomers was synthesized by using pentapyridyl templates based on ferrocene and corannulene. Both templates are effective for directing the synthesis of the butadiyne-linked cyclic pentamer, despite the fact that the...

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Bibliografiska uppgifter
Huvudupphovsmän: Liu, P, Hisamune, Y, Peeks, M, Odell, B, Gong, J, Herz, L, Anderson, H
Materialtyp: Journal article
Språk:English
Publicerad: Wiley 2016
Beskrivning
Sammanfattning:The smallest and most strained member of a family of π-conjugated cyclic porphyrin oligomers was synthesized by using pentapyridyl templates based on ferrocene and corannulene. Both templates are effective for directing the synthesis of the butadiyne-linked cyclic pentamer, despite the fact that the radii of their N5 donor sets are too small by 0.5 Å and 0.9 Å, respectively (from DFT calculations). The five-porphyrin nanoring exhibits a structured absorption spectrum and its fluorescence extends to 1200 nm, reflecting strong π conjugation and Herzberg-Teller vibronic coupling.