Труды сотрудников ИВМ СО РАН

/ S.V. Karpov, P.N. Semina, A.P. Gavrilyuk // Colloid J. - 2012. - Vol. 74, Is. 3. - pp. 305-312, DOI 10.1134/S1061933X12030052. - Cited References: 16. - Authors are thankful to G. A. Chiganova for discussions and helpful comments. Studies were carried out with the support of grants: the Presidium of RAS No 29 and No 31, OFN RAS III.9.5, IP SB RAS No 43, IP SB RAS (and SFU) No 101. . - ISSN 1061-933XРУБ Chemistry, Physical

Аннотация: The energy of pair interactions between metal nanoparticles of different sizes is shown to be able to increase upon coagulation due to the additional electrostatic effect resulting from mutual heteropolar charging of the particles. The tunnel electron transfer occurring upon the collisions between particles of different sizes may be the reason for the charging. The transfer is caused by the dependence of the electron work function on the particle size. The electron transfer through the interparticle gap equalizes the Fermi levels in particles of different sizes and is associated with this dependence. Using the example of bimodal silver nanocolloids, it is shown that mutual heteropolar charging of particles with different sizes may accelerate the coagulation of polydisperse colloidal systems by an order of magnitude or more as compared with monodisperse systems, in which this effect is absent.

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Доп.точки доступа:
Karpov, S.V.; Semina, P.N.; Gavrilyuk, A.P.; Гаврилюк, Анатолий Петрович

[Text] / K.V. Purtov [et al.] // Nanoscale Res. Lett. - 2010. - Vol. 5, Is. 3. - pp. 631-636, DOI 10.1007/s11671-010-9526-0. - Cited References: 24. - This work was supported by the Program # 27 for Basic Research of the Presidium of RAS (project 3.6.3). . - ISSN 1931-7573РУБ Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied

Аннотация: Surface of detonation nanodiamonds was functionalized for the covalent attachment of immunoglobulin, and simultaneously bovine serum albumin and Rabbit Anti-Mouse Antibody. The nanodiamond-IgG(I125) and RAM-nanodiamond-BSA(I125) complexes are stable in blood serum and the immobilized proteins retain their biological activity. It was shown that the RAM-nanodiamond-BSA(I125) complex is able to bind to the target antigen immobilized on the Sepharose 6B matrix through antibody-antigen interaction. The idea can be extended to use nanodiamonds as carriers for delivery of bioactive substances (i.e., drugs) to various targets in vivo.


Доп.точки доступа:
Purtov, K.V.; Petunin, A.I.; Burov, A.E.; Буров, Андрей Ефимович; Puzyr, A.P.; Bondar, V.S.