Covalently Linked Hybrid Structures of Semiconductor Nanocrystals and Allophycocyanin

Karpulevich, A.A.; Maksimov, E.G.; Gorokhov, V.V.; Churin, A.A.; Ivanov, M.V.; Paschenko, V.Z.

Авторы: Karpulevich A.A., Maksimov E.G., Gorokhov V.V., Churin A.A., Ivanov M.V., Paschenko V.Z.
Журнал: Nanotechnologies in Russia
Том: 12
Номер: 1-2
Год издания: 2017
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 98
Последняя страница: 106
DOI: 10.1134/S1995078017010062
Аннотация: Covalently linked hybrid structures of semiconductor nanocrystals (CdSe/ZnS quantum dots) as an inorganic component with a fluorescence maximum at 620 nm and photosynthetic protein allophycocyanin (APC) as an organic part are created. It is found out that CdSe/ZnS quantum dots form stable complexes with APC through covalent bonding in aqueous solutions. It is shown that the efficiency of electronic excitation energy transfer (EET) in such systems may be significantly enhanced under the conditions at which the monomerization of allophycocyanin trimers occurs. In this paper the EET efficiency is evaluated underdiffering experimental conditions (pH, temperature, and presence of NaSCN) for hybrid systems obtained by the self-assemblage of components via electrostatic interactions, as well as by covalent linking. Under the most optimal conditions, there is a 20-fold increase in the APC fluorescence upon the excitation of QDs dueto the very efficient EET for the covalently linked components compared to the complexes obtained by the self-assemblage. The obtained covalently linked hybrid structures open up new opportunities for their practical use as fluorescent markers, hybrid photosensors, and structural elements in photovoltaic devices.
Добавил в систему: Пащенко Владимир Захарович

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Covalently Linked Hybrid Structures of Semiconductor Nanocrystals and Allophycocyaninстатья

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