Hybrid System Based on Quantum Dots and Photosystem 2 Core Complex

被引：7

作者：

Maksimov, E. G. ^{[1
]}

Kurashov, V. N. ^{[2
]}

Mamedov, M. D. ^{[2
]}

Paschenko, V. Z. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Fac Biol, Dept Biophys, Moscow 119991, Russia

[2] Lomonosov Moscow State Univ, Belozersky Inst Phys Chem Biol, Moscow 119991, Russia

来源：

BIOCHEMISTRY-MOSCOW | 2012年 / 77卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

quantum dots; photosystem; 2; hybrid systems; energy transfer; ELECTROGENIC REACTIONS; ENERGY-TRANSFER; CROSS-SECTION; DEPENDENCE;

D O I：

10.1134/S0006297912060090

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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 Forster'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.

引用

页码：624 / 630

页数：7

共 34 条

[1]

ALLAKHVERDIEV SI, 1988, BIOFIZIKA+, V33, P442

[2] More about the inner filter effect: corrections of Stern-Volmer fluorescence quenching constants are necessary at very low optical absorption of the quencher [J].

Borissevitch, IE .

JOURNAL OF LUMINESCENCE, 1999, 81 (03) :219-224

[3]

Collings AF, 2005, ARTIFICIAL PHOTOSYNTHESIS: FROM BASIC BIOLOGY TO INDUSTRIAL APPLICATION, P1, DOI 10.1002/3527606742

[4] INTRAMOLECULAR DISTANCES DETERMINED BY ENERGY-TRANSFER - DEPENDENCE ON ORIENTATIONAL FREEDOM OF DONOR AND ACCEPTOR [J].

DALE, RE ;

EISINGER, J .

BIOPOLYMERS, 1974, 13 (08) :1573-1605

[5]

Eremin Ye. N., 1976, BASICS CHEM KINETICS

[6]

Ferster T., 1948, ANN PHYS, V437, P55

[7] ISOLATION AND CHARACTERIZATION OF AN OXYGEN-EVOLVING PHOTOSYSTEM-II REACTION CENTER CORE PREPARATION AND A 28 KDA CHL-ALPHA-BINDING PROTEIN [J].

GHANOTAKIS, DF ;

DEMETRIOU, DM ;

YOCUM, CF .

BIOCHIMICA ET BIOPHYSICA ACTA, 1987, 891 (01) :15-21

[8]

Govindjee, 1987, PHOTOSYNTHESIS, V1

[9]

Kautsky H., 1931, Naturwissenschaften, V19, P964, DOI DOI 10.1007/BF01516164

[10] USE OF ACTIVE FLUORESCENCE TO ESTIMATE PHYTOPLANKTON PHOTOSYNTHESIS IN-SITU [J].

KOLBER, Z ;

FALKOWSKI, PG .

LIMNOLOGY AND OCEANOGRAPHY, 1993, 38 (08) :1646-1665

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