Excitation Energy Transfer Between (Bacterio)Chlorophylls—the Role of Excitonic Coupling

Leupold, D.; Lokstein, Heiko; Scheer, Hugo

doi:10.1007/1-4020-4516-6_29

Cited by 5 publications

(4 citation statements)

References 122 publications

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“…The arrangement of pigments in PCP renders the complex suitable to disentangle various pigment–pigment interactions (cf. also [ 63 , 64 ]). Peridinins are assumed not to contribute to absorption in the Chl a Q y region in PCP.…”

Section: The Photosynthetic Apparatus Of Plants (And Algae)mentioning

confidence: 99%

“…The (peripheral) antennae, LH2, comprise of two distinct circular (B)Chl a aggregates bound to the apoproteins (Figure 8), termed (B)Chl-B800 and (B)Chl-B850, according to their Qy absorption maxima (reviewed in, e.g., [64]). The number of LH2 per RC may vary, and they are not found in all purple bacteria under all conditions.…”

Section: Purple Bacterial Antenna Complexesmentioning

confidence: 99%

“…The (peripheral) antennae, LH2, comprise of two distinct circular (B)Chl a aggregates bound to the apoproteins (Figure 8), termed (B)Chl-B800 and (B)Chl-B850, according to their Qy absorption maxima (reviewed in, e.g., [64]). Nonlinear absorption spectroscopy and NLPF of LH2 from Rhodobacter sphaeroides has suggested that the (B)Chls a of the B850 ring are strongly excitonically coupled and that the excitation energy is delocalized over 16 ± 4 (B)Chl molecules [88,89].…”

Section: Purple Bacterial Antenna Complexesmentioning

confidence: 99%

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Photosynthetic Light-Harvesting (Antenna) Complexes—Structures and Functions

2021

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Chlorophylls and bacteriochlorophylls, together with carotenoids, serve, noncovalently bound to specific apoproteins, as principal light-harvesting and energy-transforming pigments in photosynthetic organisms. In recent years, enormous progress has been achieved in the elucidation of structures and functions of light-harvesting (antenna) complexes, photosynthetic reaction centers and even entire photosystems. It is becoming increasingly clear that light-harvesting complexes not only serve to enlarge the absorption cross sections of the respective reaction centers but are vitally important in short- and long-term adaptation of the photosynthetic apparatus and regulation of the energy-transforming processes in response to external and internal conditions. Thus, the wide variety of structural diversity in photosynthetic antenna “designs” becomes conceivable. It is, however, common for LHCs to form trimeric (or multiples thereof) structures. We propose a simple, tentative explanation of the trimer issue, based on the 2D world created by photosynthetic membrane systems.

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Section: The Photosynthetic Apparatus Of Plants (And Algae)mentioning

confidence: 99%

“…The (peripheral) antennae, LH2, comprise of two distinct circular (B)Chl a aggregates bound to the apoproteins (Figure 8), termed (B)Chl-B800 and (B)Chl-B850, according to their Qy absorption maxima (reviewed in, e.g., [64]). The number of LH2 per RC may vary, and they are not found in all purple bacteria under all conditions.…”

Section: Purple Bacterial Antenna Complexesmentioning

confidence: 99%

“…The (peripheral) antennae, LH2, comprise of two distinct circular (B)Chl a aggregates bound to the apoproteins (Figure 8), termed (B)Chl-B800 and (B)Chl-B850, according to their Qy absorption maxima (reviewed in, e.g., [64]). Nonlinear absorption spectroscopy and NLPF of LH2 from Rhodobacter sphaeroides has suggested that the (B)Chls a of the B850 ring are strongly excitonically coupled and that the excitation energy is delocalized over 16 ± 4 (B)Chl molecules [88,89].…”

Section: Purple Bacterial Antenna Complexesmentioning

confidence: 99%

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Photosynthetic Light-Harvesting (Antenna) Complexes—Structures and Functions

2021

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“…The peripheral light-harvesting complexes (LH2) of purple bacteria comprise of two circular BChl aggregates, termed BChl-B800 and BChl-B850, according to their Q y absorption maxima (reviewed in, e.g., Leupold et al, 2006a).…”

Section: Purple Bacterial Peripheral Light-harvesting Complex Lh2mentioning

confidence: 99%

Elucidation of structure–function relationships in photosynthetic light-harvesting antenna complexes by non-linear polarization spectroscopy in the frequency domain (NLPF)

Lokstein¹,

Krikunova²,

Teuchner³

et al. 2011

Journal of Plant Physiology

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Fluorescence lifetimes: fundamentals and interpretations

Noomnarm

Clegg

2009

Photosynth Res

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Fluorescence measurements have been an established mainstay of photosynthesis experiments for many decades. Because in the photosynthesis literature the basics of excited states and their fates are not usually described, we have presented here an easily understandable text for biology students in the style of a chapter in a text book. In this review we give an educational overview of fundamental physical principles of fluorescence, with emphasis on the temporal response of emission. Escape from the excited state of a molecule is a dynamic event, and the fluorescence emission is in direct kinetic competition with several other pathways of de-excitation. It is essentially through a kinetic competition between all the pathways of de-excitation that we gain information about the fluorescent sample on the molecular scale. A simple probability allegory is presented that illustrates the basic ideas that are important for understanding and interpreting most fluorescence experiments. We also briefly point out challenges that confront the experimenter when interpreting time-resolved fluorescence responses.

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Excitation Energy Transfer Between (Bacterio)Chlorophylls—the Role of Excitonic Coupling

Cited by 5 publications

References 122 publications

Photosynthetic Light-Harvesting (Antenna) Complexes—Structures and Functions

Photosynthetic Light-Harvesting (Antenna) Complexes—Structures and Functions

Elucidation of structure–function relationships in photosynthetic light-harvesting antenna complexes by non-linear polarization spectroscopy in the frequency domain (NLPF)

Fluorescence lifetimes: fundamentals and interpretations

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