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Science 20 May 1994:
Vol. 264. no. 5162, pp. 1105 - 1111
DOI: 10.1126/science.8178169
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Articles

Science, Vol 264, Issue 5162, 1105-1111
Copyright © 1994 by American Association for the Advancement of Science

articles

Highly conjugated, acetylenyl bridged porphyrins: new models for light-harvesting antenna systems

VS Lin, SG DiMagno, and MJ Therien

Department of Chemistry, University of Pennsylvania, Philadelphia 19104-6323.

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.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Near-infrared-emissive polymersomes: Self-assembled soft matter for in vivo optical imaging.
P. P. Ghoroghchian, P. R. Frail, K. Susumu, D. Blessington, A. K. Brannan, F. S. Bates, B. Chance, D. A. Hammer, and M. J. Therien (2005)
PNAS 102, 2922-2927
   Abstract »    Full Text »    PDF »
Fully Conjugated Porphyrin Tapes with Electronic Absorption Bands That Reach into Infrared.
A. Tsuda and A. Osuka (2001)
Science 293, 79-82
   Abstract »    Full Text »    PDF »
Direct evaluation of electronic coupling mediated by hydrogen bonds: implications for biological electron transfer.
P. de Rege, S. Williams, and M. Therien (1995)
Science 269, 1409-1413
   Abstract »    PDF »


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