Fullerene supramolecular complexes

Takai A, Chkounda M, Eggenspiller A et al (2010) Efficient photoinduced electron transfer in a porphyrin tripod-fullerene supramolecular complex via pi-pi interactions in nonpolar media. J Am Chem Soc 132 4477-4489... 

X. Zhou, S.W. Kang, S. Kumar, R.R. Kulkarni, S.Z.D. Cheng, Q. Li, Self-assembly of porphyrin and fullerene supramolecular complex into highly ordered nanostructure by simple thermal annealing. Chem. Mater. 20, 3551-3553 (2008)... 

A methanofullerene derivative possessing an ammonium subunit has been prepared and subsequently shown to form a supramolecular complex with a porphyrin-crown ether conjugate <06T1979>. The synthesis and study of these fullerene-containing supramolecular photoactive devices have also been reported <06CRC1022>. 

Fullerenes, among which the representative and most abundant is the 4 symmetrical Cgg with 30 double bonds and 60 single bonds, are known to behave as electron-deficient polyenes rather than aromatic compounds [7]. The energy level of the triply degenerate LUMO of Cgg is almost as low as those of p-benzoquinone or tetracyanoethylene. Thus, a wide variety of reactions have been reported for Cgg such as nucleophilic addition, [4-1-2] cycloaddition, 1,3-dipolar addition, radical and carbene additions, metal complexation, and so on [7]. Fullerene Cgg also undergoes supramolecular complexation with various host molecules having electron-donating ability and an adequate cavity size [8]. 

Fig. 13.27 Schematic illustration of the preparation of supramolecular complexes of porphyrin-alkanethiolate monolayer pro-tected-gold nanoclusters with fullerenes and...

FIGURE 2.2 Supramolecular nanostructures for light driven energy and electron transfer. This research is focused on rational design and study of self-assembled porphyrin, fullerene, and carbon nanotube bearing supramolecular complexes and nanostructures. 

A. Simonyan, I. Gitsov, Linear-dendritic supramolecular complexes as nanoscale reaction vessels for green chemistry. Diels-Alder reactions between fullerene Cgo and polycydhc aromatic hydrocarbons in aqueous medium, Langmuir, 2008, 24, 11431. 

Komatsu K, Fujiwara K, Murata Y, Braun T. Aqueous solubilization of crystalline fullerenes by supramolecular complexation with ycyclodextrin and sulfocalix[8] arene under mechanochemical high-speed vibration milling. J Chem Soc Perkin Trans 1999 1 2963-6. 

Kawase T, Tanaka K, Seirai Y, Shiono N, Oda M (2003) Complexation of carbon nanorings with fullerenes supramolecular dynamics and structural tuning for a fullerene sensor. Angew Chem Int Ed 42(45) 5597-5600... 

PET can be studied. Despite the number of supramolecular complexes formed by ammonium-substituted fullerenes (C6O-NH3+) and 18-crown-8 appended porphyrins (Por-18C6), supramolecular ensembles held together exclusively by crown-ether PCS/C60-NH3+ interactions have... 

The groups of Torres and Ito used catechol ligands in fullerene derivatives for the synthesis of supramolecular complexes with Ti(IV), where ET from the photoexcited Ti-Pc to Cgo has been demonstrated (Figure 2.28d). ... 

There are several basket- or bowl-shaped analogues of the classical calix[n] arenes which have been used in supramolecular complexation studies with the fullerenes. These have included mainly cyclotriveratrylenes ( CTV ), cavitands and their derivatives, and but these will not be dealt with here. Instead this review... 

These supramolecular interactions have been applied to photoenergy conversion systems assembled on nanoparticles of Au, Sn02, and Ti02 [79-92], Supramolecular complexes of porphyrins and fullerenes are self-assembled to larger clusters by lypophylic interaction, and then associated on a nanos-... 

N. Armaroli (2003) From metal complexes to fullerene arrays exploring the exciting world of supramolecular photochemistry fifteen years after its birth, Photochem. Photobiol. Sci., 2 73-87. 

Radical polymerization of maleic anhydride and fullerene was used to obtain a new material, the photodynamic properties of which have been studied in vitro and in vivo. HeLa and bone tumor cell growth were inhibited by treatment with fullerene and light, so the polymer was tested on mice affected by bone tumor. After injection and irradiation, tumor size and weight were reduced and the mouse survival time was extended (Jiang and Li, 2007). The photodynamic properties of a supramolecular cucurbit[8]uril-fullerene complex have been studied by the same authors (Jiang and Li, 2006) who attributed HeLa cell death mainly to the damage of membrane phosphohpids and proteins. 

Rio Y, Nierengarten J-F (2002) Water soluble supramolecular cyclotriveratrylene-[60]fullerene complexes with potential for biological applications. Tetrahedron Lett. 43 4321 4324. 

The conjugation in the molecular wire may be disrupted or modulated to create systems with different properties. For example, a porphyrin Ceo donor-acceptor system linked with a conjugated binaphthyl unit, has a preference for the atropi-somer where the fullerene unit is closer to the porphyrin system, thus increasing the through space interactions [82]. The charge transfer process on a dyad containing a crown ether in the linker structure can be modulated by complexation/ decomplexation of sodium cations [83] but even more interesting is the construction of supramolecular systems where the donor and acceptor moieties are... 

Endohedral Fullerene Complexes, Nanotubes and Other Fullerene-based Supramolecular Systems... 

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