scholarly journals High-Efficiency Excitation Energy Transfer in Biohybrid Quantum Dot–Bacterial Reaction Center Nanoconjugates

2021 ◽  
pp. 5448-5455
Author(s):  
Giordano Amoruso ◽  
Juntai Liu ◽  
Daniel W. Polak ◽  
Kavita Tiwari ◽  
Michael R. Jones ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Excitation Energy ◽  
Reaction Center ◽  
High Efficiency ◽  
Excitation Energy Transfer ◽  
Bacterial Reaction Center

Photosynthesis

2009 ◽  
pp. 573-587
Author(s):  
Julia Adolphs
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Reaction Center ◽  
High Efficiency ◽  
Excitation Energy Transfer ◽  
Photosynthetic Reaction Center ◽  
Photochemical Reactions ◽  
Light Harvesting Complexes ◽  
Transition Energies ◽  
Local Transition

This chapter introduces the theory of optical spectra and excitation energy transfer of light harvesting complexes in photosynthesis. The light energy absorbed by protein bound pigments in these complexes is transferred via an exciton mechanism to the photosynthetic reaction center where it drives the photochemical reactions. The protein holds the pigments in optimal orientation for excitation energy transfer and creates an energy sink by shifting the local transition energies of the pigments. In this way, the excitation energy is directed with high efficiency (close to 100 %) to the reaction center. In the present chapter, this energy transfer is studied theoretically. Based on crystal structure data, the excitonic couplings are calculated taking into account also the polarizability of the protein. The local transition energies are obtained by two independent methods and are used to predict the orientation of the FMO protein relative to the reaction center.

THEORY OF EXCITATION-ENERGY TRANSFER PROCESSES INVOLVING OPTICALLY FORBIDDEN EXCITON STATES IN ANTENNA SYSTEMS OF PHOTOSYNTHESIS

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3637-3640
Author(s):  
KOICHIRO MUKAI ◽  
SHUJI ABE ◽  
HITOSHI SUMI
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Reaction Center ◽  
High Efficiency ◽  
Purple Bacteria ◽  
Excitation Energy Transfer ◽  
Light Harvesting Complex ◽  
Transfer Processes ◽  
Photosynthetic Purple Bacteria ◽  
Antenna Systems

The rate of excitation-energy transfer (EET) within the light-harvesting complex (LH) and from LH to the reaction center (RC) of photosynthetic purple bacteria is calculated, based on a formula for EET between molecular aggregates. We show that optically forbidden exciton states participate in EET processes through mulitpole EET interactions with the help of disorder. In the antenna systems of photosynthesis, high efficiency of energy transfer is implemented by these EET processes involving optically forbidden exciton states.

Excitation energy transfer between quantum dot and dye bound to the protein

2019 ◽  
Author(s):  
A. G. Merezhko ◽  
M. A. Gerasimova ◽  
A. Baranov ◽  
A. Yu. Dubavik ◽  
E. A. Slyusareva
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Excitation Energy ◽  
Excitation Energy Transfer
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