Polariton-assisted excitation energy channeling in organic heterojunctions

Exciton-polaritons are hybrid light-matter states resulting from strong exciton-photon coupling. The wave function of the polariton is a mixture of light and matter, enabling long-range energy transfer between spatially separated chromophores. Moreover, their delocalized nature, inherited from the photon component, has been predicted to enhance exciton transport. Here, we strongly couple an organic heterojunction consisting of energy/electron donor and acceptor materials to the same cavity mode. Using time-resolved spectroscopy and optoelectrical characterization, we show that the rate of exciton harvesting is enhanced with one order of magnitude and the rate of energy transfer in the system is increased two- to threefold in the strong coupling regime. Our results exemplify two means of efficiently channeling excitation energy to a heterojunction interface, where charge separation can occur. This study opens a new door to increase the overall efficiency of light harvesting systems using the tool of strong light-matter interactions.

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Polariton-Assisted Excitation Energy Channeling in Organic Heterojunctions

10.26434/chemrxiv.12933011.v1 ◽

2020 ◽

Author(s):

Mao Wang ◽

Manuel Hertzog ◽

Karl Börjesson

Keyword(s):

Energy Transfer ◽

Excitation Energy ◽

Strong Coupling Regime ◽

Strong Light ◽

Time Resolved ◽

Exciton Transport ◽

Donor And Acceptor ◽

Harvesting Systems ◽

Order Of Magnitude ◽

Electron Donor And Acceptor

Exciton-polaritons are hybrid light-matter states resulting from strong exciton-photon coupling. The wave function of the polariton is a mixture of light and matter, enabling long-range energy transfer between spatially separated chromophores. Moreover, their delocalized nature, inherited from the photon component, has been predicted to enhance exciton transport. Here, we strongly couple an organic heterojunction consisting of energy/electron donor and acceptor materials to the same cavity mode. Using time-resolved spectroscopy and optoelectrical characterization, we show that the rate of exciton harvesting is enhanced with one order of magnitude and the rate of energy transfer in the system is increased two- to threefold in the strong coupling regime. Our results exemplify two means of efficiently channeling excitation energy to a heterojunction interface, where charge separation can occur. This study opens a new door to increase the overall efficiency of light harvesting systems using the tool of strong light-matter interactions.

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Horizontal versus vertical charge and energy transfer in hybrid assemblies of semiconductor nanoparticles

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.3.72 ◽

2012 ◽

Vol 3 ◽

pp. 629-636 ◽

Cited By ~ 7

Author(s):

Gilad Gotesman ◽

Rahamim Guliamov ◽

Ron Naaman

Keyword(s):

Energy Transfer ◽

Charge Transfer ◽

Horizontal Plane ◽

Quartz Substrate ◽

Vertical Direction ◽

Time Resolved ◽

Transfer Processes ◽

Donor And Acceptor ◽

Hybrid Assemblies ◽

Time Resolved Photoluminescence

We studied the photoluminescence and time-resolved photoluminescence from self-assembled bilayers of donor and acceptor nanoparticles (NPs) adsorbed on a quartz substrate through organic linkers. Charge and energy transfer processes within the assemblies were investigated as a function of the length of the dithiolated linker (DT) between the donors and acceptors. We found an unusual linker-length-dependency in the emission of the donors. This dependency may be explained by charge and energy transfer processes in the vertical direction (from the donors to the acceptors) that depend strongly on charge transfer processes occurring in the horizontal plane (within the monolayer of the acceptor), namely, parallel to the substrate.

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Structure of a cyanobacterial photosystem I surrounded by octadecameric IsiA antenna proteins

Communications Biology ◽

10.1038/s42003-020-0949-6 ◽

2020 ◽

Vol 3 (1) ◽

Cited By ~ 4

Author(s):

Fusamichi Akita ◽

Ryo Nagao ◽

Koji Kato ◽

Yoshiki Nakajima ◽

Makio Yokono ◽

...

Keyword(s):

Energy Transfer ◽

Excitation Energy ◽

Photosystem I ◽

Fluorescence Spectra ◽

Protein A ◽

Excitation Energy Transfer ◽

Electron Microscopic ◽

Time Resolved ◽

Closed Ring ◽

Membrane Spanning

AbstractIron-stress induced protein A (IsiA) is a chlorophyll-binding membrane-spanning protein in photosynthetic prokaryote cyanobacteria, and is associated with photosystem I (PSI) trimer cores, but its structural and functional significance in light harvesting remains unclear. Here we report a 2.7-Å resolution cryo-electron microscopic structure of a supercomplex between PSI core trimer and IsiA from a thermophilic cyanobacterium Thermosynechococcus vulcanus. The structure showed that 18 IsiA subunits form a closed ring surrounding a PSI trimer core. Detailed arrangement of pigments within the supercomplex, as well as molecular interactions between PSI and IsiA and among IsiAs, were resolved. Time-resolved fluorescence spectra of the PSI–IsiA supercomplex showed clear excitation-energy transfer from IsiA to PSI, strongly indicating that IsiA functions as an energy donor, but not an energy quencher, in the supercomplex. These structural and spectroscopic findings provide important insights into the excitation-energy-transfer and subunit assembly mechanisms in the PSI–IsiA supercomplex.

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Elektronenanregungsenergieiibergang zwischen ungleichartigen Molekiilen in Losung / Electronic Excitation Energy Transition among unlike Molecules in Solution

Zeitschrift für Naturforschung A ◽

10.1515/zna-1977-0207 ◽

1977 ◽

Vol 32 (2) ◽

pp. 140-143 ◽

Cited By ~ 4

Author(s):

J. Kamiński ◽

A. Kawski

Keyword(s):

Energy Transfer ◽

Excitation Energy ◽

Excitation Energy Transfer ◽

Energy Transition ◽

Mutual Orientation ◽

Resonance Excitation ◽

Electronic Excitation Energy ◽

Radiationless Energy Transfer ◽

Donor And Acceptor ◽

Acceptor Molecules

In studying the radiationless energy transfer between unlike molecules (heterotransfer) in fluid and rigid solutions the fluctuations of the concentration of the acceptor molecules, as well as the dependence of the probability of resonance excitation energy transfer on the mutual orientation of the transition moments of the interacting donor and acceptor molecules have been taken into account. With these and the assumptions of the shell model of a luminescent centre (A. Kawski and J. Kaminski, Z. Naturforsch. 29 a, 452 [1974]) one obtains the Förster expression for the quantum yield of the donor fluorescence quenched by foreign absorbing substances

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Excitation energy transfer in a cationic water-soluble conjugated co-polymer studied by time resolved anisotropy and fluorescence dynamics

Chemical Physics Letters ◽

10.1016/j.cplett.2006.01.078 ◽

2006 ◽

Vol 421 (1-3) ◽

pp. 205-209 ◽

Cited By ~ 5

Author(s):

D. Anestopoulos ◽

M. Fakis ◽

P. Persephonis ◽

V. Giannetas ◽

J. Mikroyannidis

Keyword(s):

Energy Transfer ◽

Excitation Energy ◽

Excitation Energy Transfer ◽

Water Soluble ◽

Time Resolved

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Time-Resolved Investigation of Excitation Energy Transfer in Carbon Nanotube–Porphyrin Compounds

The Journal of Physical Chemistry C ◽

10.1021/jp207267e ◽

2011 ◽

Vol 115 (47) ◽

pp. 23283-23292 ◽

Cited By ~ 25

Author(s):

Damien Garrot ◽

Benjamin Langlois ◽

Cyrielle Roquelet ◽

Thierry Michel ◽

Philippe Roussignol ◽

...

Keyword(s):

Energy Transfer ◽

Carbon Nanotube ◽

Excitation Energy ◽

Excitation Energy Transfer ◽

Time Resolved

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Excitation energy transfer from symmetric cyanine dyes to unsymmetric merocyanine aggregated in functionalized Langmuir–Blodgett films by time-resolved fluorescence spectroscopy

Chemical Physics Letters ◽

10.1016/s0009-2614(01)00552-8 ◽

2001 ◽

Vol 342 (1-2) ◽

pp. 58-64 ◽

Cited By ~ 12

Author(s):

Krishanu Ray ◽

Hiroo Nakahara ◽

Akira Sakamoto ◽

Mitsuo Tasumi

Keyword(s):

Energy Transfer ◽

Fluorescence Spectroscopy ◽

Excitation Energy ◽

Excitation Energy Transfer ◽

Cyanine Dyes ◽

Time Resolved Fluorescence ◽

Time Resolved ◽

Langmuir Blodgett ◽

Langmuir Blodgett Films

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Versatility of Homogeneous Time-Resolved Fluorescence Resonance Energy Transfer Assays for Biologics Drug Discovery

CrossRef Listing of Deleted DOIs ◽

10.1177/1087057114557464 ◽

2014 ◽

Vol 20 (4) ◽

pp. 508-518 ◽

Cited By ~ 5

Author(s):

Christine J. Rossant ◽

Carl Matthews ◽

Frances Neal ◽

Caroline Colley ◽

Matthew J. Gardener ◽

...

Keyword(s):

Energy Transfer ◽

Drug Discovery ◽

Fluorescence Resonance Energy Transfer ◽

Resonance Energy Transfer ◽

Resonance Energy ◽

Time Resolved Fluorescence ◽

Time Resolved ◽

Donor And Acceptor ◽

Wide Range ◽

Fluorescence Resonance

Identification of potential lead antibodies in the drug discovery process requires the use of assays that not only measure binding of the antibody to the target molecule but assess a wide range of other characteristics. These include affinity ranking, measurement of their ability to inhibit relevant protein-protein interactions, assessment of their selectivity for the target protein, and determination of their species cross-reactivity profiles to support in vivo studies. Time-resolved fluorescence resonance energy transfer is a technology that offers the flexibility for development of such assays, through the availability of donor and acceptor fluorophore-conjugated reagents for detection of multiple tags or fusion proteins. The time-resolved component of the technology reduces potential assay interference, allowing screening of a range of different crude sample types derived from the bacterial or mammalian cell expression systems often used for antibody discovery projects. Here we describe the successful application of this technology across multiple projects targeting soluble proteins and demonstrate how it has provided key information for the isolation of potential therapeutic antibodies with the desired activity profile.

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