Rienk van Grondelle

TL;DR: Using IR transient absorption spectroscopy, this paper studied how energy migrates through the light-harvesting antenna of photosynthetic purple bacteria, and how the energy is trapped by the reaction centre, and found that the antenna appears homogeneous at room temperature and 77 K, and that trapping appears to be very fast, and approximately described by a random-walk model using known spectral properties of the antenna and reaction centre.

TL;DR: The results presented here demonstrate that the analysis of a single PAM fluorometry quenching experiment can already provide information on the relative quantum yield of the four different states of PSII for the intact chloroplasts - something no other form of spectroscopy could provide in a single measurement.

TL;DR: In this paper, a physical approach to environmental problems is presented, where the economic and social context Sunlight and the Solar Spectrum The Greenhouse Effect Transport of Pollutants The Carbon Cycle 2.

TL;DR: In this article, the authors describe how femtosecond time-resolved infrared spectroscopy is useful for the study of the dynamics of pigment-protein complexes, and what the technical requirements are to perform such experiments.

TL;DR: In this article, the transfer and trapping of excitation energy in the light-harvesting antenna of purple bacteria is discussed. And a consistent physical picture of energy transfer and energy trapping has been obtained including a precise assignment of the energy transfer pathways together with a direct visualization of the full excitation dynamics where various regimes ranging from coherent motion of the delocalized exciton to the hopping of localized excitations are superimposed.