Macrocyclic Oligofurans: A Computational Study

作者：Dishi Or; Gidron Ori^*

来源：Journal of Organic Chemistry, 2018, 83(6): 3119-3125.

DOI：10.1021/acs.joc.7b03030

Macrocyclic oligothiophenes (nCT) have been extensively explored for their unique optical and electronic properties, while their oxygen-containing analogues, macro cyclic oligofurans (nCF), are not known. In this work, macrocyclic oligofurans bearing 5-16 units (5CF-16CF) are studied theoretically at the B3LYP/6-311G(d) level. We find that small macrocycles (6CF-8CF) exhibit planar or nearly planar geometries, low strain energies, low HOMO-LUMO gaps, and strong pi-conjugation as also reflected in their Raman spectra. These findings are in sharp contrast to macrocyclic oligothiophenes of the same size, which are distorted from planarity. Additionally, small macrocyclic furans display significantly lower reorganization energies and ionization potentials compared with their thiophene analogues. Overall, the observed properties highlight the potential of macrocyclic oligofurans to function as p-type organic electronic materials.

• 出版日期2018-3-16