scholarly journals Mechanistic principles and applications of resonance energy transfer

2008 ◽  
Vol 86 (9) ◽  
pp. 855-870 ◽  
Author(s):  
David L Andrews
Keyword(s):  
Energy Transfer ◽  
Optical Switching ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Synthetic Analogue ◽  
Primary Mechanism ◽  
Synthetic Materials ◽  
Förster Energy Transfer ◽  
All Optical ◽  
All Optical Switching

Resonance energy transfer is the primary mechanism for the migration of electronic excitation in the condensed phase. Well-known in the particular context of molecular photochemistry, it is a phenomenon whose much wider prevalence in both natural and synthetic materials has only slowly been appreciated, and for which the fundamental theory and understanding have witnessed major advances in recent years. With the growing to maturity of a robust theoretical foundation, the latest developments have led to a more complete and thorough identification of key principles. The present review first describes the context and general features of energy transfer, then focusing on its electrodynamic, optical, and photophysical characteristics. The particular role the mechanism plays in photosynthetic materials and synthetic analogue polymers is then discussed, followed by a summary of its primarily biological structure determination applications. Lastly, several possible methods are described, by the means of which all-optical switching might be effected through the control and application of resonance energy transfer in suitably fabricated nanostructures.Key words: FRET, Förster energy transfer, photophysics, fluorescence, laser.

scholarly journals Off-Resonance Control and All-Optical Switching: Expanded Dimensions in Nonlinear Optics

2019 ◽  
Vol 9 (20) ◽  
pp. 4252 ◽  
Author(s):  
David S. Bradshaw ◽  
Kayn A. Forbes ◽  
David L. Andrews
Keyword(s):  
Optical Switching ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Nonlinear Effects ◽  
Optical Nonlinearity ◽  
Moderate Intensity ◽  
Linear Absorption ◽  
Simultaneous Application ◽  
All Optical ◽  
All Optical Switching

The theory of non-resonant optical processes with intrinsic optical nonlinearity, such as harmonic generation, has been widely understood since the advent of the laser. In general, such effects involve multiphoton interactions that change the population of each input optical mode or modes. However, nonlinear effects can also arise through the input of an off-resonant laser beam that itself emerges unchanged. Many such effects have been largely overlooked. Using a quantum electrodynamical framework, this review provides detail on such optically nonlinear mechanisms that allow for a controlled increase or decrease in the intensity of linear absorption and fluorescence and in the efficiency of resonance energy transfer. The rate modifications responsible for these effects were achieved by the simultaneous application of an off-resonant beam with a moderate intensity, acting in a sense as an optical catalyst, conferring a new dimension of optical nonlinearity upon photoactive materials. It is shown that, in certain configurations, these mechanisms provide the basis for all-optical switching, i.e., the control of light-by-light, including an optical transistor scheme. The conclusion outlines other recently proposed all-optical switching systems.

Meso-Tetrapyrenylporphyrins: Synthesis, structural, spectral, electrochemical properties and Förster energy transfer (FRET) studies

2020 ◽  
Vol 24 (05n07) ◽  
pp. 985-992
Author(s):  
Tawseef Ahmad Dar ◽  
Amir Sohel Bulbul ◽  
Muniappan Sankar ◽  
Karl M. Kadish
Keyword(s):  
Energy Transfer ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Redox Potentials ◽  
Free Base ◽  
Efficient Energy Transfer ◽  
Förster Energy Transfer ◽  
Porphyrin Core ◽  
Transfer Properties ◽  
Insight Into

Meso-tetrapyrenylporphyrin and its metal (Co[Formula: see text], Cu[Formula: see text], Ni[Formula: see text] and Zn[Formula: see text]) complexes were synthesized, characterized and studied for their spectral, electrochemical and energy transfer properties. DFT optimization was carried out to gain an insight into the interactions between the porphyrin [Formula: see text]-system and the pyrenyl substituents. The pyrenyl substituents and the porphyrin core remain essentially orthogonal to each other in both the free base and the metallated porphyrins. Redox potentials of the pyrenylporphyrins are marginally shifted as compared to their corresponding phenyl derivatives. Förster resonance energy transfer (FRET) studies were carried out in toluene for free-base pyrenylporphyrin and its Zn(II) complex. Since pyrene is a good donor, an efficient energy transfer from pyrene (D) to the porphyrin core (A) on the order of 80–85% was observed for these two compounds. It was observed that energy transfer occurs mainly via ”through-bond” (TB) interaction rather than ”through-space” (TS) interaction.

Single and dual beam optical switching of resonance energy transfer

2007 ◽  
Vol 127 (17) ◽  
pp. 174702 ◽  
Author(s):  
David L. Andrews ◽  
Richard G. Crisp ◽  
Shaopeng Li
Keyword(s):  
Energy Transfer ◽  
Optical Switching ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Dual Beam

scholarly journals Plasmon-enhanced Förster energy transfer in Langmuir-Blodgett films based on organic dyes

2019 ◽  
Vol 5 (1) ◽  
pp. 1-6
Author(s):  
Niyazbek Ibrayev ◽  
Evgeniya Seliverstova ◽  
Nazerke Zhumabay
Keyword(s):  
Energy Transfer ◽  
Organic Dyes ◽  
Visible Region ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Maximum Increase ◽  
Förster Energy Transfer ◽  
Langmuir Blodgett Films ◽  
Donor Acceptor ◽  
Silver Island

AbstractThe effect of plasmon resonance of silver island films (SIF) on the interlayer Förster resonance energy transfer (FRET) between xanthene and oxazine dye molecules was studied. It has been shown that the enhancement of FRET can be controlled by changing in the distance between the donor-acceptor system and the SIF. The maximum increase in energy transfer efficiency (EET) by a factor of 2.6 was recorded at a distance of 6 nm from the SIF. The assumption was made that an increase in EET can be associated with both the direct appearance of a plasmon-enhanced rate constant of energy transfer and an increase in the quantum yield of the energy donor in direct contact with the SIF. The results can serve as a basis for studying of photoinduced processes in hybrid materials such as “organic dye-plasmon nanoparticles”, to increase the photosensitivity of solar cells in the visible region of the spectrum, and for the studying of photobiological processes, as well as to create materials with desired properties, sensors and light energy converters.

Quantum Dot Bioconjugates as Energy Donors in Fluorescence Resonance Energy Transfer Assays

2003 ◽  
Vol 773 ◽  
Author(s):  
Aaron R. Clapp ◽  
Igor L. Medintz ◽  
J. Matthew Mauro ◽  
Hedi Mattoussi
Keyword(s):  
Energy Transfer ◽  
Quantum Dot ◽  
Organic Dyes ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Genetically Engineered ◽  
Molar Ratio ◽  
Binding Assays ◽  
Specific Sequence ◽  
Donor Acceptor

AbstractLuminescent CdSe-ZnS core-shell quantum dot (QD) bioconjugates were used as energy donors in fluorescent resonance energy transfer (FRET) binding assays. The QDs were coated with saturating amounts of genetically engineered maltose binding protein (MBP) using a noncovalent immobilization process, and Cy3 organic dyes covalently attached at a specific sequence to MBP were used as energy acceptor molecules. Energy transfer efficiency was measured as a function of the MBP-Cy3/QD molar ratio for two different donor fluorescence emissions (different QD core sizes). Apparent donor-acceptor distances were determined from these FRET studies, and the measured distances are consistent with QD-protein conjugate dimensions previously determined from structural studies.

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