DNA-Based Supramolecular Artificial Light Harvesting Complexes

2009 ◽  
Vol 131 (44) ◽  
pp. 16024-16026 ◽  
Author(s):  
Challa V. Kumar ◽  
Michael. R. Duff
Keyword(s):  
Light Harvesting ◽  
Artificial Light ◽  
Light Harvesting Complexes

scholarly journals J-aggregates of amphiphilic cyanine dyes: Self-organization of artificial light harvesting complexes

2006 ◽  
Vol 2006 ◽  
pp. 1-21 ◽  
Author(s):  
Stefan Kirstein ◽  
Siegfried Daehne
Keyword(s):  
Structural Model ◽  
Light Harvesting ◽  
Optical Spectra ◽  
Cyanine Dye ◽  
Structural Motif ◽  
Self Organization ◽  
Artificial Light ◽  
Light Harvesting Complexes ◽  
Unequal Distribution ◽  
J Aggregates

The simultaneous chemical linkage of cyanine dye chromophores with both hydrophobic and hydrophilic substituents leads to a new type of amphiphilic molecules with the ability of spontaneous self-organization into highly ordered aggregates of various structures and morphologies. These aggregates carry the outstanding optical properties of J-aggregates, namely, efficient exciton coupling and fast exciton energy migration, which are essential for the build up of artificial light harvesting systems. The morphology of the aggregates depends sensitively on the molecular structure of the chemical substituents of the dye chromophore. Accordingly, lamellar ribbon-like structures, vesicles , tubes, and bundles of tubes are found depending on the dyes and the structure can further be altered by addition of surfactants, alcohols, or other additives. Altogether the tubular structure is the most noticeable structural motif of these types of J-aggregates. The optical spectra are characterized in general by a complex exciton spectrum which is composed of several electronic transitions. The spectrum is red-shifted as a total with respect to the monomer absorption and exhibits resonance fluorescence from the lowest energy transition. For the tubular structures, the optical spectra can be related to a structural model. Although the molecules itself are strictly achiral, a pronounced circular dichroism (CD) is observed for the tubular aggregates and explained by unequal distribution of left- and right-handed helicity of the tubes. Photo-induced electron transfer (PET) reactions from the dye aggregates to electron acceptor molecules lead to superquenching which proves the delocalization of the excitation. This property is used to synthesize metal nanoparticles on the aggregate surface by photo-induced reduction of metal ions.

scholarly journals FRET efficiency and antenna effect in multi-color DNA origami-based light harvesting systems

RSC Advances ◽  
2017 ◽  
Vol 7 (39) ◽  
pp. 23924-23934 ◽  
Author(s):  
L. Olejko ◽  
I. Bald
Keyword(s):  
Chemical Sensors ◽  
Light Harvesting ◽  
Dna Origami ◽  
Artificial Light ◽  
Antenna Effect ◽  
Light Harvesting Complexes ◽  
Harvesting Systems ◽  
Fret Efficiency

Artificial light harvesting complexes find applications in photosynthesis, photovoltaics and chemical sensors. Here, we present the characterization and optimization of a multi-color artificial light harvesting system on DNA origami structures.

scholarly journals Self-assembly and energy transfer in artificial light-harvesting complexes of bacteriochlorophyll c with astaxanthin

2011 ◽  
Vol 111 (1-2) ◽  
pp. 193-204 ◽  
Author(s):  
J. Alster ◽  
T. Polívka ◽  
J. B. Arellano ◽  
P. Hříbek ◽  
F. Vácha ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Self Assembly ◽  
Light Harvesting ◽  
Artificial Light ◽  
Bacteriochlorophyll C ◽  
Light Harvesting Complexes

scholarly journals Artificial Light‐Harvesting Complexes Enable Rieske Oxygenase Catalyzed Hydroxylations in Non‐Photosynthetic cells

2020 ◽  
Vol 59 (10) ◽  
pp. 3982-3987 ◽  
Author(s):  
F. Feyza Özgen ◽  
Michael E. Runda ◽  
Bastien O. Burek ◽  
Peter Wied ◽  
Jonathan Z. Bloh ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Artificial Light ◽  
Light Harvesting Complexes ◽  
Rieske Oxygenase ◽  
Photosynthetic Cells

Efficient artificial light-harvesting systems based on aggregation-induced emission constructed in supramolecular gels

Soft Matter ◽  
2021 ◽  
Author(s):  
Xinxian Ma ◽  
bo qiao ◽  
Jinlong Yue ◽  
JingJing Yu ◽  
yutao geng ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rhodamine B ◽  
Fluorescent Dyes ◽  
Light Harvesting ◽  
Artificial Light ◽  
Efficient Energy Transfer ◽  
Aggregation Induced Emission ◽  
Efficient Energy ◽  
Harvesting Systems ◽  
Acyl Hydrazone

Based on a new designed acyl hydrazone gelator (G2), we developed an efficient energy transfer supramolecular organogel in glycol with two different hydrophobic fluorescent dyes rhodamine B (RhB) and acridine...

Artificial Light-Harvesting Metallacycle System with Sequential Energy Transfer for Photochemical Catalysis

2021 ◽  
Vol 143 (3) ◽  
pp. 1313-1317
Author(s):  
Dengqing Zhang ◽  
Wei Yu ◽  
Suwan Li ◽  
Yan Xia ◽  
Xianying Li ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Light Harvesting ◽  
Artificial Light ◽  
Photochemical Catalysis

scholarly journals Noise-Assisted Discord-Like Correlations in Light-Harvesting Photosynthetic Complexes

2021 ◽  
Vol 3 (2) ◽  
pp. 262-271
Author(s):  
Pablo Reséndiz-Vázquez ◽  
Ricardo Román-Ancheyta ◽  
Roberto León-Montiel
Keyword(s):  
Potential Role ◽  
Energy Transport ◽  
Light Harvesting ◽  
Quantum Correlations ◽  
Transport Processes ◽  
Quantum Evolution ◽  
Light Harvesting Complexes ◽  
Transport Efficiency ◽  
Photovoltaic Materials ◽  
Photosynthetic Complexes

Transport phenomena in photosynthetic systems have attracted a great deal of attention due to their potential role in devising novel photovoltaic materials. In particular, energy transport in light-harvesting complexes is considered quite efficient due to the balance between coherent quantum evolution and decoherence, a phenomenon coined Environment-Assisted Quantum Transport (ENAQT). Although this effect has been extensively studied, its behavior is typically described in terms of the decoherence’s strength, namely weak, moderate or strong. Here, we study the ENAQT in terms of quantum correlations that go beyond entanglement. Using a subsystem of the Fenna–Matthews–Olson complex, we find that discord-like correlations maximize when the subsystem’s transport efficiency increases, while the entanglement between sites vanishes. Our results suggest that quantum discord is a manifestation of the ENAQT and highlight the importance of beyond-entanglement correlations in photosynthetic energy transport processes.

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