Russian Journal of Applied Chemistry, 2009, Vol. 82, No. 11, pp. 2006−2010.
Pleiades Publishing, Ltd., 2009.
Original Russian Text
L.N. Borovikova, N.A. Matveeva, Yu.G. Baklagina, A.K. Khripunov, A.A. Tkachenko, 2009, published in Zhurnal Prikladnoi Khimii, 2009,
Vol. 82, No. 11, pp. 1860−1864.
AND POLYMERIC MATERIALS
Formation of a Composite Based
on Selenium Nanoparticles Stabilized
Methyl Sulfate and on Acetobacter Xylinum Cellulose Gel Films
L. N. Borovikova
, N. A. Matveeva
, Yu. G. Baklagina
, A. K. Khripunov
and A. A. Tkachenko
Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia
St. Petersburg State University, St. Petersburg, Russia
Received November 12, 2008
Abstract—Formation of a composite based on selenium nanoparticles stabilized with poly-N,N,N,N-
trimethylmethacryloyloxyethylammonium methyl sulfate and on Acetobacter xylinum cellulose gel films was
studied. Optimal sorption parameters at which the amorphous form of selenium is preserved in the composite
film were suggested.
Polymer-stabilized nanoparticles are of interest as
highly selective catalytic systems and composites for
immunoassay. The recent development of biological
nanotechnology led to their use as active ingredients
of drug forms and as transport systems for biologically
active substances [1–5].
Nanostructures formed by nonmetals, in particular,
nanoparticles of amorphous selenium in zero oxidation
state, are studied to a lesser extent. Owing to speciﬁ c
features of electronic structure of selenium, it exists in the
form of diverse allotropic modiﬁ cations: amorphous, α-
and β-monoclinic, trigonal, hexagonal cubic, etc. [6, 7].
Analysis of selenium structures represented in ICDD-
РDF database  shows that there are also a number of
new polymorphous modiﬁ cations arising in the course
of crystallization of selenium in a high vacuum and at
elevated temperature (210°С) . “Unidimensional”
nanostructures attracted recently particular researchers’
interest owing to their unique electrical and optical
properties and to the possibility of using them in
electronic devices [10–12].
In contrast to structures suitable for electronics,
amorphous selenium and its compounds are essential for
normal vital activity of humans. Amorphous selenium
is of particular interest as potential drug because of its
antioxidant, antimutagenic, and immunostimulating
activity . However, as in the case of metal–polymer
complexes, an important role in preparation of stable
solutions of selenium particles is played by the
polymer matrix ensuring formation of biologically
active nanocomplexes resistant to agglomeration
and sedimentation. As shown in , stabilization of
selenium particles with polyvinylpyrrolidone (PVP)
results in formation of nanostructures of size smaller
than 100 nm, with a narrow unimodal size distribution.
The resulting aqueous solution of the nanocomplex
preserves the molecular-dispersed state, with no tendency
to aggregation, for 1 month.
It was shown that amorphous selenium particles
stabilized with polyvinylpyrrolidone (PVP–nano-Se
like the analogous silver nanocomplexes (PVP–nano-
), are fairly readily sorbed into Acetobacter xylinum
cellulose gel ﬁ lm (AXC GF). This ﬁ lm is a network
formed by highly crystalline microﬁ brillar ribbons of
nanolevel size, with a large amount of incorporated
water [15, 16]. It was shown that the difference in the