АКАДЕМИЯ НАУК РЕСПУБЛИКИ УЗБЕКИСТАН
ИНСТИТУТ ИОННО-ПЛАЗМЕННЫХ И ЛАЗЕРНЫХ
ТЕХНОЛОГИЙ ИМЕНИ У.А.АРИФОВА
МИНИСТЕРСТВО ИННОВАЦИОННОГО РАЗВИТИЯ
РЕСПУБЛИКИ УЗБЕКИСТАН
Восьмая Международная конференция
по Физической Электронике
IPEC-8
23-24 сентября 2021
Ташкент, Узбекистан
СБОРНИК
ТЕЗИСОВ ДОКЛАДОВ
Ташкент 2021
133
STUDY OF STABILIZATION OF SELF-ASSEMBLY PROCESSES IN
FULLERENE C
60
SOLUTION
A.M.Kokhkharov, S.A.Bakhramov, U.K.Makhmanov, Sh.A.Esanov,
B.A.Aslonov, B.A.Sindarov, Z.Bekmurodov
Institute of Ion-Plasma and Laser Technologies named after U.A. Arifov, Academy of
Sciences of the Republic of Uzbekistan, st. Durmon yuli 33, Tashkent, Uzbekistan;
urol_m@mail.ru
Abstract:
Using the method of optical spectroscopy, the processes of self-
organization of fullerene C
60
molecules in a xylene solution in time are studied. The
character of stability of synthesized fullerene nanoclusters in solution is discussed.
Keywords:
Fullerene C
60
, optical spectra, self-assembly, xylene.
The discovery and study of Buckminsterfullerene C
60
with a spherical structure
since 1985, has led to revolutionary changes in modern nanotechnology [1].
Fullerenes, soluble in various organic solvents, are often analyzed using UV/visible
spectrometry. However, there are few data on the changes in absorption coefficients
for the C
60
fullerene in weakly polar solvents, for example, in xylene.
This article will investigate changes in the absorbance of a C
60
solution in
xylene over time using UV/visible spectrometry. In the experiments, we used C
60
fullerene powder (SES Research,
USA) with purity of less than
99.8%, and xylene of analytical
purity from Sigma Aldrich (USA).
The figure shows the changes in the
measured values of the optical
density of a freshly prepared
solution of fullerene C
60
for
different
storage
times.
Measurements were performed at a
fixed wavelength of
336 nm. The
fixed concentration of C
60
in
solution was
1.85 mg/ml. As can
be seen, inside a freshly prepared solution, the process of self-assembly of C
60
molecules immediately begins and lasts up to 15 days, naturally, in this case, the
optical density values gradually increase. After 15 days of storage of the solution, the
intensity of absorption is completely reduced, although the C
60
solution remains
colloidal. The results show that the optical density of the C
60
solution after storage for
30 and 35 days is practically indistinguishable, which allows us to conclude that the
stability of the synthesized C
60
fullerene clusters in solution has been achieved.
1.
Kroto H.W., et al. C
60
: Buckminsterfullerene //
Nature
, 1985, 318, 162-163.
2.
Makhmanov U.K., et al. Organic Fractal Nano-Dimensional Structures Based on
Fullerene C60 //
Fullerenes, Nanotub. Carbon Nanostruct.
,
2019, 27, 273-278.
219
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