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  • Title: In-capillary self-assembly study of quantum dots and protein using fluorescence coupled capillary electrophoresis.
    Author: Wang J, Li J, Li J, Qin Y, Wang C, Qiu L, Jiang P.
    Journal: Electrophoresis; 2015 Jul; 36(14):1523-8. PubMed ID: 25809142.
    Abstract:
    As a vast number of novel materials in particular inorganic nanoparticles have been invented and introduced to all aspects of life, public concerns about how they might affect our ecosystem and human life continue to arise. Such incertitude roots at a fundamental question of how inorganic nanoparticles self-assemble with biomolecules in solution. Various techniques have been developed to probe the interaction between particles and biomolecules, but very few if any can provide advantages of both rapid and convenient. Herein, we report a systematic investigation on quantum dots (QDs) and protein self-assembly inside a capillary. QDs and protein were injected to a capillary one after another. They were mixed inside the capillary when a high voltage was applied. Online separation and detection were then achieved. This new method can also be used to study the self-assembly kinetics of QDs and protein using the Hill equation, the KD value for the self-assembly of QDs and protein was calculated to be 8.8 μM. The obtained results were compared with the previous out of-capillary method and confirmed the effectiveness of the present method.
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