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Plant Energy Transformations-Photosynthesis

The future of clean green solar power may well hinge on scientists being able to unravel the mysteries of photosynthesis

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PHOTOSYNTHETIC REACTION CENTERS - Photobiology

(Chemical Equation Presented) Share and share alike: Chlorophylls are appended to rigid linkers with threefold symmetry. The efficiency of both energy and charge transfer between the chlorophylls is controlled by the structure of the central linker. Direct chlorophyll-ethynyl linkage facilitates charge sharing between all three chlorophylls on the EPR/ENDOR timescale (10 7 Hz). ENDOR = electron nuclear double resonance.

The light-dependent reactions (article) | Khan Academy

AB - (Chemical Equation Presented) Share and share alike: Chlorophylls are appended to rigid linkers with threefold symmetry. The efficiency of both energy and charge transfer between the chlorophylls is controlled by the structure of the central linker. Direct chlorophyll-ethynyl linkage facilitates charge sharing between all three chlorophylls on the EPR/ENDOR timescale (10 7 Hz). ENDOR = electron nuclear double resonance.

Singlet Oxygen: Generation and Properties

100+ Holt Chemistry Concept Review Energy Transfer Answers The Use Of Bioluminescence Resonance Energy Transfer 2 To Study,Close

N2 - In the natural photosynthesis process, light harvesting complexes (LHCs) absorb light and pass excitation energy to photosystem I (PSI) and photosystem II (PSII). In this study, we have used nanocrystalline quantum dots (NQDs) as an artificial LHC by integrating them with PSI to extend their spectral range. We have performed photoluminescence (PL) and ultrafast time-resolved absorption measurements to investigate this process. Our PL experiments showed that emission from the NQDs is quenched, and the fluorescence from PSI is enhanced. Transient absorption and bleaching results can be explained by fluorescence resonance energy transfer (FRET) from the NQDs to the PSI. This nonradiative energy transfer occurs in ∼6 ps. Current - voltage (I-V) measurements on the composite NQD-PSI samples demonstrate a clear photoresponse.

In the natural photosynthesis process, light harvesting complexes (LHCs) absorb light and pass excitation energy to photosystem I (PSI) and photosystem II (PSII). In this study, we have used nanocrystalline quantum dots (NQDs) as an artificial LHC by integrating them with PSI to extend their spectral range. We have performed photoluminescence (PL) and ultrafast time-resolved absorption measurements to investigate this process. Our PL experiments showed that emission from the NQDs is quenched, and the fluorescence from PSI is enhanced. Transient absorption and bleaching results can be explained by fluorescence resonance energy transfer (FRET) from the NQDs to the PSI. This nonradiative energy transfer occurs in ∼6 ps. Current - voltage (I-V) measurements on the composite NQD-PSI samples demonstrate a clear photoresponse.

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... or so says the breathless promo for the , without offering a scintilla of supporting evidence. And while you're at it, get their Sonical Fuel Charger whose electric fields produce "molecular cracking" that increases power and reduces emissions! Utterly ridiculous! One part of their site claims to kill bacteria by encrusting them with scale, another claims electroporation. All this presumably supercedes their former claims about a so-called "Matrix Enabled Particulization" process, in which What will they think up next?

that will energise your water through altering the hydrogen content, thus simulating photosynthesis and ... making it easier for the plant to absorb moisture... up to 25% increased crop growth

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    In this article, we'll explore the light-dependent reactions as they take place during photosynthesis in plants

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James Durrant undertook his undergraduate studies in Natural Sciences at the University of Cambridge. For his Ph.D. degree, he studied the primary processes of plant photosynthesis under the supervision of Professors Lord Porter and Jim Barber at Imperial College. In 1999, he joined the Department of Chemistry, Imperial College, London, where he is now Professor of Photochemistry and Deputy Director of the Energy Futures Lab. His research is focused on the photochemical processes that underlie solar energy conversion by nanostructured and molecular materials, harnessing solar energy to produce electricity (photovoltaics) and molecular fuels (e.g., hydrogen).

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Singlet Oxygen: Generation and Properties - photobiology

N2 - (Chemical Equation Presented) Share and share alike: Chlorophylls are appended to rigid linkers with threefold symmetry. The efficiency of both energy and charge transfer between the chlorophylls is controlled by the structure of the central linker. Direct chlorophyll-ethynyl linkage facilitates charge sharing between all three chlorophylls on the EPR/ENDOR timescale (10 7 Hz). ENDOR = electron nuclear double resonance.

Singlet Oxygen: Generation and Properties Leonard I

AB - In the natural photosynthesis process, light harvesting complexes (LHCs) absorb light and pass excitation energy to photosystem I (PSI) and photosystem II (PSII). In this study, we have used nanocrystalline quantum dots (NQDs) as an artificial LHC by integrating them with PSI to extend their spectral range. We have performed photoluminescence (PL) and ultrafast time-resolved absorption measurements to investigate this process. Our PL experiments showed that emission from the NQDs is quenched, and the fluorescence from PSI is enhanced. Transient absorption and bleaching results can be explained by fluorescence resonance energy transfer (FRET) from the NQDs to the PSI. This nonradiative energy transfer occurs in ∼6 ps. Current - voltage (I-V) measurements on the composite NQD-PSI samples demonstrate a clear photoresponse.

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