Fullerene films with suppressed polymerizing ability
Аннотация:
Illumination of fullerene with visible light in the presence of oxygen leads to a transition of oxygen from triplet (ground) to singlet (excited) state where singlet oxygen is a long-lived reactive oxygen species. The effectiveness of fullerene as a singlet oxygen generator drastically decreases when fullerenes are condensed into a bulk material, mainly due to the polymerization ability. The ability of fullerene films to polymerize was studied for the C60 fullerene films intercalated with tetraphenylporphyrine (TPP), CdS, CdTe, HNO3 as well as the hydrogen plasma treated films. Raman spectroscopy was used for monitoring the polymerization process. The ability to polymerize was found to be tightly connected to the formation of charge-transfer (Wannier-Mott) excitons which are revealed in the absorption spectra and measured with the help of spectroscopic ellipsometry.
Ключевые слова:
Постоянный URL
Статьи в номере
- Synthesis, isolation, and X-ray structural characterization of trifluoromethylated C90 fullerenes: C90(30)(CF3)18 and C90(35)(CF3)14
- Preparation and characterization of a new clustered {С70}n fullerene material
- UV-Vis diagnostics of the PMMA - C60 composite system and the kinetics of its thermal decomposition
- Toward paclitaxel-[60]fullerene immunoconjugates as a targeted prodrug against cancer
- Characterization of fullerene derivatives by MALDI LIFT-TOF/TOF mass spectrometry
- Simulation of secondary electron transport in thin metal and fullerite films
- CVD growth of carbon nanotubes with a Ni catalyst in a polyimide trench
- Propagation of femtosecond pulses in carbon nanotubes
- The semi-empirical research of the adsorption of biologically active molecules on the outer surface of carbon nanotubes
- Sensor properties of carboxyl-modifies carbon nanotubes
- Migration processes on the surface of carbon nanotubes with substitute boron atoms
- Utilizing of the medium-energy ion scattering spectrometry for the composition investigation of graphene oxide films on silicon surface
- Investigation of structure and transport properties of graphene grown by low-pressure no flow CVD on polycrystalline Ni films
- Hierarchically porous graphene in natural graphitic globules from silicate magmatic rocks
- The influence of the ambient conditions on the electrical resistance of graphene-like films
- Topological mechanochemistry of graphene
- The electron-phonon matrix element in the Dirac point of graphene
- The adsorption properties of polycrystalline graphene: quantum-chemical simulation
- The evolution of few cycles optical pulses in a double-layer graphene – boron nitride taking into account nonlinearity of a medium
- Nanodiamond-based oil lubricants on steel-steel and stainless steel – hard alloy high load contact: investigation of friction surfaces
- Synergistic influence of fluorine and hydrogen on processes of thermal transformations of carbon-containing systems under high pressures
- Secondary nucleation on nanostructured carbon films in the plasma of direct current glow discharge
- Field electron emission from a nickel-carbon nanocomposite
- Structural changes in industrial glassy carbon as a function of heat treatment temperature according to Raman spectroscopy and X-ray diffraction data
- Carbon encapsulation of magnetic metal nanoparticles: correlation between nanoscale structure of carbon matrix and electromagnetic properties
- Using artificial neural networks for elaboration of fluorescence biosensors on the basis of nanoparticles
- The state-of-the-art science and applications of carbon nanotubes
- Graphene edge spins: spintronics and magnetism in graphene nanomeshes