Artificial light-harvesting

Polivka, T., M. Pellnor, E. Melo, T. Pascher, V. Sundstrom, A. Osuka, and K. R. Naqvi. 2007. Polarity-tuned energy transfer efficiency in artificial light-harvesting antennae containing carbonyl carotenoids peridi-nin and fucoxanthin. J. Phys. Chem. C 110 467 -76. [Pg.156]

Kirstein, S. and Daehne, S. (2006). J-aggregates of amphiphilic cyanine dyes self-organization of artificial light harvesting complexes. Int. J. Photoenergy 5, 1-21. [Pg.289]

The above studies provide evidence for the donor-to-donor energy migration within the assemblies of the chromophores built from a variety of systems, but they all share a common matrix for assembly. Such systems may be of interest in the construction of artificial light-harvesting antennas [67,72],... [Pg.543]

Balzani V, Campagna S, Puntoniero F, et al. Dendrimers made of Ru(II) and Os(II) polypyridine subunits as artificial light-harvesting antennae. CR Chimie 2003 6 883-93. [Pg.207]

The p>orphyiins have attracted considerable attention because are ubiquitous in natural systems and have prosp>ective applications in mimicking enzymes, catalytic reactions, photodynamic therapy, molecular electronic devices and conversion of solar energy. In particular, munerous p>orphyrins based artificial light-harvesting antennae, and donor acceptor dyads and triads have been prepared and tested to improve our understanding of the photochemical aspect of natural photosynthesis. [Pg.87]

With different molar ratios between the donor and acceptor, the acceptor emission amplified significantly as the ratio of the donor increased. Eventually, the energy transfer was saturated at the 1 352 ratio of acceptor and donor, when the maximum acceptor emission amplification reached a factor of 35, which is much higher than that of other artificial light-harvesting systems. [Pg.38]

Fig. 6.11 The structure of supramolecular artificial light-harvesting antenna AP-11...

Polypyridyl ruthenium complexes are known for their interesting photophysical and redox properties as well as their countless appHcations. Polypyridine ruthenium compounds display weU-defined chemistry, photochemistry, and photophysical properties they have found use as artificial light-harvesting systems for technological purposes and as... [Pg.269]

In our laboratory we are currently investigating several types of supramolecular systems which can play a role of artificial light-harvesting antennae or charge-separation devices. [Pg.2]

Excitation energy transfer in multiporphytin arrays with cycHc architectures Towards artificial light-harvesting antenna complexes 12CSR 4808. [Pg.276]

Artificial light-harvesting system formed by covalent bonding... [Pg.1719]

To summarize this section, various kinds of chromophore arrays have been developed by means of covalent and noncovalent bond formation. The biological molecules also can be utilized as templates or backbones to impart a permanent structure and shape to the chromophore arrays to achieve the light-harvesting function. From the studies of these artificial light-harvesting systems, it was revealed that... [Pg.1720]

PRINCIPLES FOR DESIGNING ARTIFICIAL LIGHT-HARVESTING SYSTEMS... [Pg.23]

Optimality of excitation transfer network. Even though natural light harvesting systems appear to be optimized in terms of the details of their network geometry, this is probably not a high priority constraint for artificial light harvesting systems. [Pg.24]

We hope this review has shown that purple bacteria provide a very useful model system both to study the processes of light-harvesting and to give us clues as to the design principles required for the de novo construction of efficient artificial light-harvesting complexes. We expect to see real progress in this endeavor over the next few years. [Pg.87]

Light harvesting in photosynthetic purple bacteria is reviewed in detail based on recent advances in structure determination and ultrafast laser spectroscopy. Knowledge obtained from photosynthesis research forms a solid ground for studies of various artificial light harvesting systems. [Pg.143]

Imahori, H. Giant multiporphyrin arrays as artificial light-harvesting antennas. J. Phys. Chem. B 108, 6130-6143, 2004. [Pg.85]

One inevitable problem associated with the construction of artificial light harvesting complexes concerns energy dissipation via exciton annihilation processes. These reactions, which plague the natural organisms at high illumination intensities, compete with photon migration to the reaction center... [Pg.287]

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