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Intercomponent Photoinduced Processes

It should be recalled, however, that even an interaction of a few cm (which cannot be noticed in spectroscopic experiments) may be sufficient to cause intercomponent energy transfer or electron transfer processes. As already mentioned, the nature and length of the bridging ligand can contribute strongly to the rate of the photoinduced processes. Many compounds have been labeled wire molecules, but in most cases the wire-type behavior could not be observed. However, one should first define what is a molecular wire and what are the expectations for such a system. [Pg.3277]

In conclusion, for the RuM.8"+ [2]catenates family, photoinduced intercomponent energy and/or electron transfer processes are evideneed. The direction of such processes can be tuned upon a suitable choice of the metal ion complexing the [M(phen)2] +-type eoordination center, according to the schematic representation of Figure 19. [Pg.2276]

The possibility of observing photoinduced intercomponent processes in hetero-dinuclear knotted complexes was made possible with the knots bearing a phenylene unit, as interchromophoric spacer [52b] (Figure 21). In fact, in this case the synthetic yield of the parent dicopper complex is high enough to allow further decomplexation recomplexation steps, as required. [Pg.2278]

The sequence of events taking place in this system is (i) charge transfer excitation (process 7 in Fig. 4, eq 30), (ii) intercomponent electron transfer (process 13 in Fig. 4, eq 31), (iii) localized emission (process 5 in Fig. 4, eq 32). As shown in Figure 4, this is essentially the reverse sequence with respect to photoinduced electron transfer, except for the fact that... [Pg.197]

Recent work on polynuclear metal complexes [3], i.e., supramolecular systems containing covalently linked transition metal complexes as molecular components, is described in this article. Such systems have been designed in order to study intercomponent processes relevant to photoinduced charge separation and antenna functions. The possibility to use supramolecular anterma systems in the spectral sensitization of wide-bandgap semiconductors is also discussed in some detail. [Pg.236]


See other pages where Intercomponent Photoinduced Processes is mentioned: [Pg.3274]    [Pg.3275]    [Pg.3274]    [Pg.3275]    [Pg.2270]    [Pg.176]    [Pg.2013]    [Pg.13]    [Pg.18]   


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Intercomponent processes

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