Clusterization of fullerene C60/70 molecules in solutions and its influence on the optical and the nonlinear optical properties of solutions

“…In addition, C 60 fullerene exhibits unique optical properties that have high potential for wide photo-optical applications [22]. Fullerene C 60 solutions are characterized by the formation of clusters of fullerene molecules in them [23][24], the formation of which occurs within several months after dissolution. The latter fact makes it possible to study in detail the processes occurring in the system at various stages of aggregation.…”

Section: Introductionmentioning

confidence: 99%

Study of stabilization of self-assembly processes in fullerene C60 solution

Makhmanov

Kokhkharov

Esanov

et al. 2021

УФЖ

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The dynamics of changes in the values of the refractive index of solutions of C60 in xylene at various concentrations has been studied by the refractometric method. It was found that the deviation from the linear form of the dependence of the refractive index on the C60 concentration occurs at a C60 concentration of 1.8 mg/ml. The deviation is associated with the largest number of molecular interactions between C60−C60 and the formation of large nanoclusters on their basis in solution. It was found by the dynamic light scattering (DLS) that the final size of C60 nanoclusters in solution depends on the initial concentration of the solute. A higher initial concentration of C60 leads to the synthesis of nanoclusters with a larger diameter. Using the method of optical spectroscopy, the processes of self-organization of fullerene C60 molecules in a xylene solution in time are studied. The character of stability of synthesized fullerene nanoclusters in solution is discussed. The results obtained are of particular importance for numerous applications of nanotechnology for understanding self-assembly processes and the development of new nanomaterials.

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“…In a number of pure and mixed organic solvents, fullerene С n (n = 60, 70, 76, …) molecules show a pronounced tendency to self-assembly and the formation of fairly large functional fullerene aggregates of various shapes and sizes. The problem was fundamentally studied by different physical and chemical methods in [3][4][5][6][7][8][9][10][11] and the obtained results provided a vector toward potential applications in material chemistry [12,13], biomedicine [14][15][16], phototherapy [17][18][19], molecular electronics [20], optoelectronics [21,22] and solar energy [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

The formation of self-assembled structures of C₆₀ in solution and in the volume of an evaporating drop of a colloidal solution

Makhmanov¹,

Kokhkharov²,

Bakhramov³

et al. 2020

Lith. J. Phys.

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The results of experiments on the self-aggregation of C60 fullerene molecules both inside a two-component solvent (xylene/tetrahydrofuran) and in the volume of an evaporating drop of C60 colloidal solution on a flat substrate surface are presented. The investigations of C60 solutions using dynamic light scattering, transmission electron microscopy and UV–Vis absorption spectroscopy methods revealed the possibility of synthesis of fractal nanoaggregates with a diameter of up to ~135 nm at low concentrations of C60 in the solutions. The final geometric dimensions of C60 nanoaggregates were determined by the initial concentration of fullerene in the solvent medium. Using the scanning electron microscopy method, we have shown that in an open dissipative system – in the volume of an evaporating droplet of the colloidal solution of fullerene C60 sessile on the surface of a flat glass substrate, large quasispherical nanoaggregates with an average diameter of ~380–800 nm are formed. The physical features and regularities that characterize the processes of self-aggregation of fullerene particles in the volume of a drying drop were determined.

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Clusterization of fullerene C60/70 molecules in solutions and its influence on the optical and the nonlinear optical properties of solutions

Cited by 13 publications

References 28 publications

Features of self-aggregation of C 60 molecules in toluene prepared by different methods

Features of self-aggregation of C 60 molecules in toluene prepared by different methods

Study of stabilization of self-assembly processes in fullerene C60 solution

The formation of self-assembled structures of C₆₀ in solution and in the volume of an evaporating drop of a colloidal solution

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Clusterization of fullerene C60/70 molecules in solutions and its influence on the optical and the nonlinear optical properties of solutions

Cited by 13 publications

References 28 publications

Features of self-aggregation of C 60 molecules in toluene prepared by different methods

Features of self-aggregation of C 60 molecules in toluene prepared by different methods

Study of stabilization of self-assembly processes in fullerene C60 solution

The formation of self-assembled structures of C60 in solution and in the volume of an evaporating drop of a colloidal solution

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Product

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The formation of self-assembled structures of C₆₀ in solution and in the volume of an evaporating drop of a colloidal solution