CC BY-NC-ND 4.0 · Organic Materials 2021; 03(01): 051-059
DOI: 10.1055/s-0041-1722848
Focus Issue: Curved Organic π-Systems
Original Article

Heptagon-Containing Saddle-Shaped Nanographenes: Self-Association and Complexation Studies with Polycyclic Aromatic Hydrocarbons and Fullerenes

a   Department of Organic Chemistry, Faculty of Sciences, University of Granada. Avda. Fuente Nueva S/N, 18071, Granada, Spain
a   Department of Organic Chemistry, Faculty of Sciences, University of Granada. Avda. Fuente Nueva S/N, 18071, Granada, Spain
a   Department of Organic Chemistry, Faculty of Sciences, University of Granada. Avda. Fuente Nueva S/N, 18071, Granada, Spain
a   Department of Organic Chemistry, Faculty of Sciences, University of Granada. Avda. Fuente Nueva S/N, 18071, Granada, Spain
a   Department of Organic Chemistry, Faculty of Sciences, University of Granada. Avda. Fuente Nueva S/N, 18071, Granada, Spain
a   Department of Organic Chemistry, Faculty of Sciences, University of Granada. Avda. Fuente Nueva S/N, 18071, Granada, Spain
› Author Affiliations
Funding Information We acknowledge FEDER/Junta de Andalucía (A-FQM-339-UGR18, Programa Operativo FEDER 2014-2020, Consejería de Economía y Conocimiento), the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (ERC-2015-STG-677023), and Ministerio de Ciencia, Innovación y Universidades (MICIU/FEDER/AEI, Spain; PGC2018-101181-B-I00) for financial support.


Supramolecular interactions between molecules of the same or different nature determine to a great extent the degree of their applicability in many fields of science. To this regard, planar polycyclic aromatic hydrocarbons (PAHs) and their nanometric congeners, nanographenes (NGs), as well as positively curved ones, as for instance corannulene, have been extensively explored. However, negatively curved saddle-shaped NGs have remained a curiosity to date within this field. Therefore, here we communicate the first systematic study on the supramolecular behavior of heptagon-containing hexa-peri-hexabenzocoronene analogues. Thus, their self-association and host–guest complexation processes with both flat and curved PAHs, and fullerenes have been studied by means of 1H and 13C NMR titrations in solution, identifying C70 as one of the guests with the highest association constant among all the ones tested.

Supporting Information

Supporting Information for this article is available online at

Supporting Information

Publication History

Received: 16 October 2020

Accepted: 14 December 2020

Article published online:
08 February 2021

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