نتایج جستجو برای: d24 c60 واژگان کلیدی
تعداد نتایج: 53080 فیلتر نتایج به سال:
As in the case of carbon nanotubes, also boron nitride nanotubes may host arrays of C60 molecules and form a nanopeapod (NPP). The observed separation between C60 molecules in BN NPP’s is consistently shorter than in carbon NPP’s, which influences their electronic properties. Here we report on total-energy pseudopotential density functional theory (DFT) calculations for polymerized and nonpolym...
چکیده در این پایان نامه ابتدا جذب اتم نقره بر سطح خارجی فلورن (c60)و مشتقات آن (اتم نیتروژن و بور درج شده (داپت شده) در c60 )و سپس برهمکنش این گونه ها با مولکول های دی متیل دی سولفید (dmds) (به عنوان یک مدل ساده)و سیستین (یک مدل واقعی که شباهت ساختاری زیادی به تکه ای از ساختار gp120 ویروس hiv-1 که محل اصلی اتصال gp120 به cd4 می باشد ) با استفاده از محاسبات dft مورد بررسی قرار گرفته است . با دا...
The quenching rate constants of singlet oxygen by C60, H2@C60, D2@C6o, H2, and D2 in solution were measured. The presence of a hydrogen (H2@C60) or deuterium (D2@C60) molecule inside the fullerene did not produce any observable effect based on triplet lifetime or EPR measurements. However, a remarkable effect was found for the 1O2 quenching by C60, H2@C60, D2@C6o, H2, and D2. Singlet oxygen was...
The electronic structures of pentacene and C60 interfaces were investigated using ultraviolet photoelectron spectroscopy (UPS) and X-ray photoelectron spectroscopy (XPS). The magnitudes of measured interface dipole were 0.11 eV and 0.07 eV for the C60 deposited on pentacene (C60/pentacene) and the pentacene deposited on C60 (pentacene/C60), respectively. The obtained C 1s spectra on these sampl...
Various types of lipid membrane-incorporated C60 with high C60 concentrations can be prepared easily in several hours using the C60 exchange method and the photocleaving activity of cationic lipid membrane-incorporated C60 was appreciably higher than that of the C60.gamma-CDx complex.
In this work, the doping of n-layer graphenes with C60 is investigated via Raman spectroscopy. The results indicate that C60 can induce hole doping in graphenes, and that the doping level is closely related to the layer number of the graphenes. Moreover, the level of doping in the hybrid of C60 on graphene (C60/G) is more significant than that in the hybrid of graphene on C60 (G/C60).
The successful synthesis of H2O@C60 makes possible the study of magnetic interactions of an isolated water molecule in a geometrically well-defined hydrophobic environment. Comparisons are made between the T1 values of H2O@C60 and the previously studied H2@C60 and their nitroxide derivatives. The value of T1 is approximately six times longer for H2O@C60 than for H2@C60 at room temperature, is i...
We have created insulated C60 nanowire by packing C60 molecules into the interior of insulating boron nitride nanotubes (BNNTs). For small-diameter BNNTs, the wire consists of a linear chain of C60 molecules.With increasing BNNT inner diameter, unusual C60 stacking configurations are obtained (including helical, hollow core, and incommensurate) that are unknown for bulk or thin-film forms of C6...
The behavior of intermolecular interactions in fresh and aged solutions fullerene C60 neat N-methyl-2-pyrrolidone (NMP), as well NMP/xylene mixed solvents, were studied by the methods ultraviolet-visible spectroscopy dynamic light scattering (DLS). It has been experimentally shown that aging C60/NMP solution leads to disappearance characteristic maximum molecular absorption at ∼330 nm with smoo...
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