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A receptor is described for fullerenes featuring three exTTF units linked to a CTV scaffold. The exTTF-CTV host forms stable complexes with both [C.sub.60] and [C.sub.70] and light-induced ESR spectra have shown that intracomplex PET processes take place in solution.

An exTTF-based macrocyclic receptor is described that has associated [C.sub.60] with a binding constant in chlorobenzene at room temperature. The studies have shown an improvement of 3 orders of magnitude with respect to the previous examples of exTTF-based receptors and one of the highest binding constants toward [C.sub.60].

The molecular conformation of a bis-helicenic terpyridine system is strongly modified upon binding to Zn(ii) ion, a process that is accompanied by large changes in the optical and chiroptical properties. This system affords a new type of helicene-based chiroptical switching. [ABSTRACT FROM AUTHOR]

The article presents a study regarding the design, synthesis, and binding abilities of macrocyclic fullerene receptors that were based on 2-[9-(1,3-diothiol-2-ylidene)anthracen-10(9H)-ylidene]-1,3-diothiole (exTTF). It mentions that macrocyclic receptor's design maintains the features of tweezers receptors but includes an alkyl linker with terminal alkenes. Ultraviolet (UV)-vis titration were conducted to estimate the binding constants of macrocyles toward C60 and C70.

The integrated analytical approach developed in this study offers a powerful methodology for the structural characterisation of complex molecular nanomaterials. Structures of a covalent organic framework based on boronate esters (COF-5) and a conjugated microporous polymer (Aza-CMP) have been investigated by a combination of several electron microscopy techniques elucidating the three-dimensional topology of the complex polycrystalline (COF) and non-crystalline (CMP) materials. Unexpected, aperiodic mesoporous channels of 20-50 nm in diameter were found to be penetrating the COF and CMP particles, which cannot be detected by X-ray diffraction techniques. The mesopores appear to be stable under a range of different conditions and accessible to gas molecules, exhibiting a particular bonding capability with CO2 in the case of the CMP. The mesoporosity is unrelated to the intrinsic chemical structures of the COF or CMP but rather it reflects the mechanisms of polymer particle formation in a polycondensation reaction. The mesopores may be templated by clusters of solvent molecules during the COF or CMP synthesis, leaving cavities within the polymer particles. The unexpected mesoporosity discovered in COF and CMP materials begs for re-assessment of the nature of framework materials and may open new opportunities for applications of these molecular materials in gas sorption or catalysis.

Supramolecular polymers based on dispersion forces typically show lower molecular weights (MW) than those based on hydrogen bonding or metal-ligand coordination. We present the synthesis and self-assembling properties of a monomer featuring two complementary units, a C60 derivative and an exTTF-based macrocycle, that interact mainly through π-π, charge-transfer, and van der Waals interactions. Thanks to the preorganization in the host part, a remarkable log K(a)=5.1±0.5 in CHCl3 at room temperature is determined for the host-guest couple. In accordance with the large binding constant, the monomer self-assembles in the gas phase, in solution, and in the solid state to form linear supramolecular polymers with a very high degree of polymerization. A MW above 150 kDa has been found experimentally in solution, while in the solid state the monomer forms extraordinarily long, straight, and uniform fibers with lengths reaching several microns., (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

The supramolecular modification of planar graphene with the geometrically mismatched, curved 9,10-di(1,3-dithiole-2-ylidene)-9,10-dihydroanthracene (exTTF) molecule is demonstrated. The exTTF-graphene interaction is governed by π-π and CH-π interactions, with a negligible contribution from charge transfer. We amplified these weak forces through multivalent gold nanoparticles. Our results show that planarity is not a prerequisite for recognition motifs for graphene., (Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)