Purple Bacterial Light-harvesting Complexes: From Dreams to Structures

Cogdell, Richard J.; Hashimoto, Hideki; Gardiner, Alastair T.

doi:10.1023/b:pres.0000030452.60890.f1

Cited by 9 publications

(2 citation statements)

References 23 publications

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“…Many decades of research have been spent in determining the detailed structures of LHCs such as investigations led by Blankenship [19] and Cogdell et al [20]. These studies have been assisted by developments in multidimensional nuclear magnetic resonance (NMR) [21], time lapse, fluorescence spectrographic examination [22,23], high-performance liquid chromatography (HPLC) separation of pigments [24,25] and high-resolution X-ray diffraction crystallography [10,20] which has revealed the 3D details of these macromolecular structures.…”

Section: Light-harvesting Pigment-protein Complexesmentioning

confidence: 99%

“…These studies have been assisted by developments in multidimensional nuclear magnetic resonance (NMR) [21], time lapse, fluorescence spectrographic examination [22,23], high-performance liquid chromatography (HPLC) separation of pigments [24,25] and high-resolution X-ray diffraction crystallography [10,20] which has revealed the 3D details of these macromolecular structures. Thus, the purple bacteria Rhodospirillium rubrum produce a primary (LH1) LHC, which has a peak absorption wavelength somewhat shorter than that of the peripheral complexes (LH2 and sometimes an LH3 complex) [26].…”

Section: Light-harvesting Pigment-protein Complexesmentioning

confidence: 99%

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Light‐harvesting and light‐protecting pigments in simple life forms

Dawson¹

2007

Coloration Technology

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Photosynthesis is the basis of life on the earth and the development of the vast range of simple organisms existing today can often be traced back to the earliest geological times. Most life forms depend directly or indirectly on the synthetic processes which harvest the sun's energy, utilising a range of pigments such as the chlorophylls and carotenoids, which not only determine the colour of each organism, but often also serve a protective role against the adverse effects of ultraviolet radiation. Recent research has elucidated the detailed photochemical mechanisms and the complex nature of the light-harvesting pigment-protein complexes. This review covers algae and fungi and their symbiotic forms in lichens and corals, particularly with respect to the pigments they synthesise and the commercial uses to which these and other metabolites have been (and may in the future be) put.

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Section: Light-harvesting Pigment-protein Complexesmentioning

confidence: 99%

Section: Light-harvesting Pigment-protein Complexesmentioning

confidence: 99%

Light‐harvesting and light‐protecting pigments in simple life forms

Dawson¹

2007

Coloration Technology

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Exciton Migration and Surface Trapping for a Photonic Crystal Displaying Charge‐Recombination Fluorescence

Al-Aqar

Atahan

Benniston

et al. 2016

Chemistry A European J

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A compact donor-acceptor molecular dyad has been synthesized by attaching an N,N-dimethylamino fragment to a naphthalic anhydride residue. The dyad shows fluorescence from an intramolecular charge-transfer state (i.e., charge-recombination fluorescence) in solution, with the photo-physical properties being strongly dependent on the solvent polarity. Similar emission is seen for single crystals of the target compound, the molecules being aligned head-to-head, although time-resolved emission profiles display dual-exponential kinetics. A second polymorph with the head-to-tail alignment also gives rise to two lifetimes that differ somewhat from those of the first structure, which are assigned to bulk and surface-bound molecules. Growing the crystal in the presence of Rhodamine B localizes the dye around the surface. Excitation of the crystal is followed by sub-ps exciton migration along the aligned stacks, with occasional crossing to adjacent stacks and trapping at the surface. Rhodamine B present at very low levels acts as the acceptor for excitons entering the surface layer. Crystals embedded in a polyester resin form an artificial light-harvesting antenna able to sensitize an amorphous silicon solar cell.

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