FORMATION OF Se0 NANOPARTICLES
8. US Patent 5120643.
821
CONCLUSIONS
9
. Selenium in Biology and Human Health, Burk, R.F.,
Ed., New York: Springer, 1994.
(1) Spherical particles of amorphous selenium
about 15 nm in size were obtained by reduction of
selenium(IV) in the presence of the selenite ascorbate
redox system in aqueous solution of a cationic poly-
electrolyte.
1
1
0. Zhang, J.S., Gao, X.Y., Zhang, L.D., and Bao, Y.P.,
Biofactors, 2001, vol. 15, no. 1, pp. 27 38.
1. Tsvetkov, V.N., Eskin, V.E., and Frenkel’, S.Ya.,
Struktura makromolekul v rastvorakh (Structure of
Macromolecules in Solutions), Moscow: Nauka, 1964.
(
2) Sharp decrease in the intrinsic and apparent
0
viscosity of the resulting polymer Se water solution
indicates that the thermodynamic properties of this
system become close to ideal, which suggests forma-
tion of aggregation-stable macromolecule adsorbates
on selenium nanoparticles.
12. Eskin, V.E., Rasseyanie sveta rastvorami polimerov i
svoistva makromolekul (Light Scattering in Polymer
Solutions and Properties of Macromolecules), Lenin-
grad: Nauka, 1986.
1
1
1
1
1
3. Brown W., Dynamic Light Scattering: The Method
and Some Applications, Oxford: Clarendon, 1993.
4. Meewes, M., Ricka, J., De Silva, M., et al., Macro-
molecules, 1991, vol. 24, no. 21, pp. 5811 5816.
(3) As shown by the molecular hydrodynamics
and optical data, the resulting adsorbate can be de-
scribed as a supermacromolecular close-packed (k
5. Nishio, I., Shao, Thang Sun, Swislow, G., and Tana-
0.7) spherical nanostructure of nearly 70 nm size,
ka, T., Nature, 1979, vol. 281, no. 5728, pp. 208 209.
6. Konishi, T., Yoshizaki, T., and Yamakawa, H., Macro-
molecules, 1991, vol. 24, no. 20, pp. 5614 5622.
7. Burchard, B.W., Laser Light Scattering in Biochemis-
try, Harding, S.E., Satelle, D.B., and Bloomfild, V.A.,
Eds., Cambridge: Royal Soc. Chem. Inform., 1992,
pp. 3 21.
8. Valueva, S.V., Kipper, A.I., Rumyantseva, N.V., and
Klenin, S.I., Vysokomol. Soedin., Ser. A, 2000, vol. 42,
no. 7, pp. 1152 1157.
containing about 11 macromolecules whose hydro-
dynamic radius in the free state would be 540 nm.
REFERENCES
1
. Pomogailo, A.D., Nonochastitsy metallov v polime-
rakh (Metal Nanoparticles in Polymers), Moscow:
Nauka, 1999.
1
2
3
4
5
6
7
. Litmanovich, A.A. and Papisov, I.M., Vysokomol.
Soedin., Ser. B, 1997, vol. 39, no. 2, pp. 313 326.
19. Storhoff, J.J., Lazaorides, A.A., Mucic, R.C., et al.,
J. Am. Chem. Soc., 2000, vol. 122, no. 19, pp. 4640
. Kopeikin, V.V. and Panarin, E.F., Dokl. Ross. Akad.
Nauk, 2001, vol. 243, no. 2, pp. 497 500.
4
650.
2
0. Valueva, S.V., Conformation Properties of Macro-
molecular Diphilic Polyanions and Polycations in
Aqueous Salt and Aqueous Acetone Solutions, Cand.
Sci. Dissertation, St. Petersburg, 1997.
1. Askadskii, A.A. and Matveev, Yu.I., Khimicheskoe
stroenie i fizicheskie svoistva polimerov (Chemical
Structure and Physical Properties of Polymers), Mos-
cow: Khimiya, 1983.
. Balogh, L., Swanson, D.R., Tomalia, D.A., et al.,
Nano Lett., 2001, vol. 1, no. 1, pp. 18 21.
. Connelly, S. and Fitzmaurice, D., Adv. Mater., 1999,
vol. 11, no. 14, pp. 1202 1205.
2
. Handbook of Chemistry and Physics, Lide, R.D., Ed.,
Cleveland: Chapman and Hall, 2001, 81-st ed.
. US Patent 4954452.
RUSSIAN JOURNAL OF APPLIED CHEMISTRY Vol. 76 No. 5 2003