title: Hybrid system based on quantum dots and photosystem 2 core complex.
abstract: We show that semiconductor nanocrystals (quantum dots, QD) can be used to increase the absorption capacity of pigment-protein complexes. In a mixture of photosystem 2 core complex (PS2) and QD, the fluorescence of the latter decreases several-fold due to the transfer of the absorbed energy to the PS2 core complex. We discuss Förster's inductive-resonance mechanism as a possible way of energy transfer in donor-acceptor pairs QD-PS2 core complex. Calculations based on the experimental data show that the enhancement of PS2 fluorescence and the rate of Q(A) reduction increase up to 60% due to efficient energy migration from QD to PS2.
authors: Department of Biophysics, Biology Faculty, Lomonosov Moscow State University, 119991 Moscow, Russia. emaksimoff@yandex.ru
authors: E G
authors: EG
authors: Maksimov
authors: V N
authors: VN
authors: Kurashov
authors: M D
authors: MD
authors: Mamedov
authors: V Z
authors: VZ
authors: Paschenko
mesh_terms: D000465:Algorithms; D004735:Energy Transfer; D005453:Fluorescence; D045332:Photosystem II Protein Complex / Q000737:chemistry* / Q000302:isolation & purification; D045663:Quantum Dots; D012666:Semiconductors; D018724:Spinacia oleracea / Q000737:chemistry
chemical_list: D045332:Photosystem II Protein Complex