The cover picture shows a paramagnetic bis‐fullerene derivative capable of bridging two adjacent graphene sheets for performing magnetic single‐molecule junctions. A family of magnetic molecular ...wires consisting of two highly π‐conjugated linker moieties coordinated to FeII and CoII spin‐crossover complexes and endowed with fullerene end‐groups have been synthetized. This novel synthetic pathway provides access to a completely new family of magnetic complexes suitable for the development of single‐molecule junctions using graphene nanoelectrodes. Details are discussed in the Full Paper by A. Hirsch et al. on page 781 ff (DOI: 10.1002/ejoc.201601356).
Hetero-Diels-Alder reactions of 60fullerene with alpha,beta-unsaturated thio-oxindoles (3a, 3b, 3c), prepared from thio-oxindole 1 and heteroaromatic aldehydes (2a, 2b, 2c), to generate ...tetrahydrothiopyrano2,3-bindole 60fullerene cycloadducts (5a, 5b, 5c) under thermal or microwave irradiation were described. The yields were improved, and the reaction time was decreased by conducting the reaction under microwave irradiation.
Isomerically pure endohedral metallofullerenes Gd@C.sub.82(C.sub.2v), Ho@C.sub.82(C.sub.2v), and their monoan-ions have been synthesized and separated. The optical absorption spectra of solutions of ...obtained compounds in o-dichlorobenzene have been studied. Within the Hubbard model, the energy spectrum of isomer of C.sub.2v symmetry (no. 9) of fullerene C.sub.82 has been calculated. Based on the obtained spectrum, optical absorption spectra of endohedral metallofullerenes Gd@C.sub.82 and Ho@C.sub.82 and their monoanions have been simulated. The calculated optical absorption spectra have been compared with experimental ones; it has been found that qualitative agreement between them is observed.
The rotation dynamics of C.sub.60 molecules in monolayer fullerene films grown on the WO.sub.2/W(110) surface is studied by scanning tunneling microscopy. The formation of molecule clusters, which ...have a high libron vibration amplitude, is detected near the rotational phase transition temperature. The energy parameters that determine a change in the molecule orientation, namely, the energy difference between the nearest minima of the C.sub.60 molecule energy (30 meV) as a function of the molecule orientation and the potential barrier between them (610 meV), are determined. The results are discussed in terms of the mean-field approximation. DOI: 10.1134/S1063776115040032
Abstract Carbon-based nanomaterials including carbon nanotubes, graphene oxide, fullerenes and nanodiamonds are potential candidates for various applications in medicine such as drug delivery and ...imaging. However, the successful translation of nanomaterials for biomedical applications is predicated on a detailed understanding of the biological interactions of these materials. Indeed, the potential impact of the so-called bio-corona of proteins, lipids, and other biomolecules on the fate of nanomaterials in the body should not be ignored. Enzymatic degradation of carbon-based nanomaterials by immune-competent cells serves as a special case of bio-corona interactions with important implications for the medical use of such nanomaterials. In the present review, we highlight emerging biomedical applications of carbon-based nanomaterials. We also discuss recent studies on nanomaterial ‘coronation’ and how this impacts on biodistribution and targeting along with studies on the enzymatic degradation of carbon-based nanomaterials, and the role of surface modification of nanomaterials for these biological interactions.
Fullerenes have attracted considerable interest as an electron-transporting layer in perovskite solar cells. Fullerene-based perovskite solar cells produce no hysteresis and do not require ...high-temperature annealing. However, high power conversion efficiency has been only achieved when the fullerene layer is thermally evaporated, which is an expensive process. In this work, the limitations of a solution-processed fullerene layer have been identified as high crystallinity and the presence of remnant solvents, in contrast to a thermally deposited C60 film, which has low crystallinity and no remaining solvents. As a solution to these problems, a mixed C60 and C70 solution-processed film, which exhibits low crystallinity, is proposed as an electron-transporting layer. The mixed-fullerene-based devices produce power conversion efficiencies as high as that of the thermally evaporated C60-based device (16.7%) owing to improved fill factor and open-circuit voltage. In addition, by vacuum-drying the mixed fullerene film, the power conversion efficiency of the solution-processed perovskite solar cells is further improved to 18.0%. This improvement originates from the enhanced transmittance and charge transport by removing the solvent effect. This simple and low-cost method can be easily used in any type of solar cells with fullerene as the electron-transporting layer.
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