Biological photosynthetic machinery allosterically regulate light harvesting via conformational and electronic changes at the antenna protein complexes as a response to specific chemical inputs. Fundamental limitations in current approaches to regulating inorganic light-harvesting mimics prevent their use in catalysis. Here we show that a light-harvesting antenna/reaction centre mimic can be re...

The nature of the highly efficient energy transfer in photosynthetic light-harvesting complexes is a subject of intense research. Unfortunately, the low fluorescence efficiency and limited photostability hampers the study of individual light-harvesting complexes at ambient conditions. Here we demonstrate an over 500-fold fluorescence enhancement of light-harvesting complex 2 (LH2) at the single...

In natural light-harvesting systems, pigment-protein complexes (PPC) convert sunlight to chemical energywith near unity quantum efficiency. PPCs exhibit emergent properties that cannot be simply extrapolated from knowledge of their component parts. In this Perspective, we examine the design principles of PPCs, focussing on the major light-harvesting complex of Photosystem II (LHCII), the most a...

Biopliv.v. Ac,/rr 808. 4 I 5 420 Telfer. A.. Allen. J . F.. Barber. J . & Bennett. J . (19X3tr) Biodiim. Biop/i>,.s. Aclu 722. I 76 I X I Telfer. A.. Hodges. M. & Barber, J . (I9X3h) Hiochini. Biop/i ,~~.v. A ( , / < / 724. 167 175 Telfer, A,. Hodgcs. M.. Millner. P. A. & Barber, J . (19x4) BIo<~/iitn. Biop/iy.s. A(,/tr 766. 554 562 Williams. W. P. ( 1977) in P r i n i q Proc~o.s.sc,s in P/ioro...

The field of organic photovoltaics has developed rapidly over the last 2 decades, and small solar cells with power conversion efficiencies of 13% have been demonstrated. Light absorbed in the organic layers forms tightly bound excitons that are split into free electrons and holes using heterojunctions of electron donor and acceptor materials, which are then extracted at electrodes to give usefu...

In oxygenic photosynthesis, two photosystems work in series. Each of them contains a reaction centre that is surrounded by light-harvesting antennae, which absorb the light and transfer the excitation energy to the reaction centre where electron transfer reactions are driven. Here we report a critical test for two contrasting models of light harvesting by photosystem II cores, known as the trap...

Monier H. Tadros, Roland D ierstein *, and G erhart Drews Institut für Biologie 2, Mikrobiologie, Albert-Ludwigs-Universität, D-7800 Freiburg, Bundesrepublik Deutschland Z. Naturforsch. 39c, 922-926 (1984); received July 11, 1984 Rhodopseudomonas capsulata, Light Harvesting Complexes, Bacteriochlorophyll-Binding Poly­ peptides The mutant strains A la + and 75 of Rhodopseudomonas capsulata are d...