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Expanded Rosarin: A Versatile Fullerene (C 60) Receptor

Expanded Rosarin: A Versatile Fullerene (C 60) Receptor

Xian-Sheng Ke, Taeyeon Kim, James T Brewster 2nd, Vincent M Lynch, Dongho Kim, Jonathan L Sessler

J Am Chem Soc. 2017 Apr 5;139(13):4627-4630.

PMID: 28318261

Abstract:

An expanded rosarian (P3P6) with a bowl-like conformation has been prepared and characterized in a one-pot procedure that involves condensing a bispyrrole pyridine precursor (P1P2) with benzaldehyde, followed by oxidation. Single crystal X-ray diffraction analysis reveals a bowl-like conformation in the solid state with an upper rim diameter defined by the meso-phenyl substituents of ca. 13.5 Å and a depth of roughly 6.3 Å. P3P6 forms both 1:1 and 2:1 complexes with C60 in the solid state. DFT reveals similar energies for the two binding modes. A 1:1 binding stoichiometry dominates in 1,2-dichlorobenzene-d4 at the millimolar concentrations dictated by solubility consideration. The solution phase interactions between rosarian and C60 were studied using 1H NMR, UV-vis, and femtosecond transient absorption spectroscopies in 1,2-dichlorobenzene-d4 or toluene. To our knowledge, this is the first report of an unfunctionalized porphyrinoid that forms a well-defined complex with C60 in solution as well as in solid state.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP84954938	Rosarin		84954-93-8	Price

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