Detection of fullerenes (C60 and C70) in commercial cosmetics
نویسندگان
چکیده
منابع مشابه
Tribological properties of fullerenes C60 and C70 microparticles
The frictional behaviors of fullerenes C60 and C70 were studied because they were speculated to be solid lubricants. For the sublimated pure C60 films on Si(001), a high friction coefficient (0.55–0.8) was observed under different loads and pin materials. For the C70 film, the friction coefficient showed a pin dependence, which changed from 0.5 with an Al2O3 pin to about 0.9 with a 440 stainles...
متن کاملOn the Radical Anion Spectra of Fullerenes C60 and C70
The radical anion spectra of C60 and C70 can be easily generated and studied in primary aliphatic amines. In these conditions the C60• and C70• species are accompanied by the dianions C60 and C70. In the near infrared region the electronic transitions at 1075, 1058 and 991 nm were assigned to C60• while those at about 1020-1030 nm and at 933 nm were assigned to the fullerene dianion C60 . The e...
متن کاملDetection of C60 and C70 in a young planetary nebula.
In recent decades, a number of molecules and diverse dust features have been identified by astronomical observations in various environments. Most of the dust that determines the physical and chemical characteristics of the interstellar medium is formed in the outflows of asymptotic giant branch stars and is further processed when these objects become planetary nebulae. We studied the environme...
متن کاملOptical-absorption spectra in fullerenes C60 and C70: Effects of Coulomb interactions, lattice fluctuations, and anisotropy.
(Received) ABSTRACT Effects of Coulomb interactions and lattice fluctuations in the optical absorption spectra of C 60 and C 70 are theoretically investigated by using a tight binding model with long-range Coulomb interaction and bond disorder. Anisotropy effects in C 70 are also considered. Optical spectra are calculated by using the Hartree-Fock approximation followed by the configuration int...
متن کاملOne-step synthesis of imidazoline-containing macrocycles and their complexation with fullerenes C60 and C70.
A new family of imidazoline-arylene macrocycles have been constructed through the simultaneous formation of four imidazoline rings in one step. These macrocycles can efficiently complex with fullerenes C60 and C70 through the formation of ground-state complexes.
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ژورنال
عنوان ژورنال: Environmental Pollution
سال: 2011
ISSN: 0269-7491
DOI: 10.1016/j.envpol.2011.01.018