Fullerene C60, 2CCl4 solvate. A solid-state study

Céolin, R.; Агафонов, В.; André, Daniel; Dworkin, A.; Szwarc, H.; Dugué, Jérôme; Keita, Bieneta; Nadjo, Louis; Fabre, Claude; Rassat, A.

doi:10.1016/0009-2614(93)89072-p

Cited by 47 publications

(27 citation statements)

References 16 publications

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“…In Fig. 3(a) 21 , which is consistent with the reported result of C 70 film. 16 No lines from C 60 were observed, indicating that the C 70 film was free of C 60 impurity.…”

Section: A Sem Micrographs Hardness and Ir Spectra Of Films And Sosupporting

confidence: 91%

“…17 In the IR spectrum of C 70 ? xC 6 H 6 , besides those lines of C 70 , the line of benzene molecule at 671 cm 21 can be seen obviously, indicating the benzene molecules coexist in the crystals which also have the hcp structure. Figure 4 shows the friction coefficients of disks Si(001), C 60 film A and B, and the C 70 film on Si(001) versus sliding distances.…”

Section: A Sem Micrographs Hardness and Ir Spectra Of Films And Somentioning

confidence: 95%

“…For example, C 60 crystals grown from benzene, 8,19 n-heptane, 20 CCl 4 , 21 and a benzene solution containing CH 2 I 2 22 have a hexagonal structure. 17 C 60 crystals grown from CS 2 23 or n-pentane 24 in an untwinned form show an orthorhombic lattice.…”

Section: Sem Micrographs Of Wear Tracks Of C 60 and C 70 Filmsmentioning

confidence: 99%

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Tribological properties of fullerenes C₆₀ and C₇₀ microparticles

et al. 1996

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The frictional behaviors of fullerenes C 60 and C 70 were studied because they were speculated to be solid lubricants. For the sublimated pure C 60 films on Si(001), a high friction coefficient (0.55-0.8) was observed under different loads and pin materials. For the C 70 film, the friction coefficient showed a pin dependence, which changed from 0.5 with an Al 2 O 3 pin to about 0.9 with a 440 stainless steel pin. The relatively high friction coefficients of C 60 and C 70 films were due to the tendency of the C 60 and C 70 particles to clump and compress into high shear strength layers rather than due to the impurities in the fullerenes. The benzene-solvated C 60 ? 4C 6 H 6 and C 70 ? xC 6 H 6 showed a lowered friction coefficient (0.25 for C 60 ? 4C 6 H 6 and 0.3 for C 70 ? xC 6 H 6 ), which might result from the lowered shear strength of the hcp structure of C 60 ? 4C 6 H 6 and C 70 ? xC 6 H 6 molecular crystals in which the benzene molecules were intercalated.

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“…In Fig. 3(a) 21 , which is consistent with the reported result of C 70 film. 16 No lines from C 60 were observed, indicating that the C 70 film was free of C 60 impurity.…”

Section: A Sem Micrographs Hardness and Ir Spectra Of Films And Sosupporting

confidence: 91%

Section: A Sem Micrographs Hardness and Ir Spectra Of Films And Somentioning

confidence: 95%

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Tribological properties of fullerenes C₆₀ and C₇₀ microparticles

et al. 1996

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“…As far as the desolvation process upon heating C 60 AE2HCClBr 2 is concerned, it looks different from those previously found [22,28,32] with hexagonal C 60 AE2 halogenomethane solvates insofar as it exhibits an intermediate step the latter do not, except C 60 AE2HCBr 3 whose TGA curve exhibits a shoulder from about 363 K [13], possibly related to the desolvation of the orthorhombic C 60 AE1CHBr 3 solvate [35].…”

Section: Discussionmentioning

confidence: 67%

“…For a given CX 4 solvent molecule as CCl 4 , a hexagonal solvate C 60 AE2CCl 4 [22,23] is found at room temperature. The lowering of the molecular symmetry of the solvent (T d for CCl 4 ) raises the question of the dependence of the solvate lattice symmetry.…”

Section: Introductionmentioning

confidence: 99%