Stoichiometry-dependent formation of quantum dot-antibody bioconjugates: A complementary atomic force microscopy and agarose gel electrophoresis study

Article Abstract:

Biotinylated antibodies (biotin-IgG) are attached to commercial streptavidin-conjugated quantum dots (strep-QDs) at different stoichiometric ratios and are characterized with atomic force microscopy and discontinuous sodium dodecyl sulfate agarose gel electrophoresis (SDA-AGE). The results showed that the molar ratio determined the relative sizes, molecular weights and morphologies of the QD bioconjugates, as well as the specific binding between biotin-IgG and strep-QDs.

Oregon, Properties, Structure, Chemical properties, Biotin

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Direct measurements of interactions between polypeptides and carbon nanotubes

Article Abstract:

The interactions of various polypeptides with individual carbon nanotubes (CNTs), both multiwall (MW) and single wall (SW) are investigated by atomic force microscopy (AFM). The adhesion force is found to increase with the oxidation time for acid-oxidized multi-wall carbon nanotubes (Ox-MWCNTs) and to be negligible for oxidized single-wall carbon nanotubes (Ox-SWCNTs).

Electric properties, Polypeptides, Carbon compounds

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Gas phase complexes MX3.4,4'Bpy.M'X3 (M,M' = Al, Ga; X = Cl, Br): experiment and theory

Article Abstract:

Theoretical investigations are conducted to study the volatility of MX3.LL.M'X3 (M = Al, Ga; X = Cl, Br) 2:1 complexes in the gas phase. The result shows the possibilities for the use of these complexes as single-source precursors to the stoichiometry-controlled synthesis of 13-15 alloys.

Gases, Chemical synthesis

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