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Highly Conjugated, Acetylenyl Bridged Porphyrins: New Models for Light-Harvesting Antenna Systems
Victor S.-Y. Lin, Stephen G. DiMagno and Michael J. Therien
New Series, Vol. 264, No. 5162 (May 20, 1994), pp. 1105-1111
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/2885124
Page Count: 7
You can always find the topics here!Topics: Porphyrins, Chromophores, Molecules, Visible spectrum, Absorption spectra, Dimers, Solvents, Antennas, Wavelengths, Electronic spectra
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A new class of porphyrin-based chromophore systems has been prepared from ethyne-elaborated porphyrin synthons through the use of metal-mediated cross-coupling methodologies. These systems feature porphyrin chromophores wired together through single ethynyl linkages. This type of topological connectivity affords exceptional electronic interactions between the chromophores which are manifest in their room temperature photophysics, optical spectroscopy, and electrochemistry; these spectroscopic signatures indicate that these species model many of the essential characteristics of biological light-harvesting antenna systems.
Science © 1994 American Association for the Advancement of Science