title: Highly conjugated, acetylenyl bridged porphyrins: new models for light-harvesting antenna systems.
abstract: 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.
authors.affiliation: Department of Chemistry, University of Pennsylvania, Philadelphia 19104-6323.
authors.forename: V S
authors.initials: VS
authors.lastname: Lin
authors.forename: S G
authors.initials: SG
authors.lastname: DiMagno
authors.forename: M J
authors.initials: MJ
authors.lastname: Therien
mesh_terms: D004563:Electrochemistry; D015394:Molecular Structure; D010777:Photochemistry; D010788:Photosynthesis; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry*; D011166:Porphyrins / Q000138:chemical synthesis / Q000737:chemistry*; D013057:Spectrum Analysis; D013696:Temperature
chemical_list: D045322:Photosynthetic Reaction Center Complex Proteins; D011166:Porphyrins