HIGHLY CONJUGATED, ACETYLENYL BRIDGED PORPHYRINS - NEW MODELS FOR LIGHT-HARVESTING ANTENNA SYSTEMS
HIGHLY CONJUGATED, ACETYLENYL BRIDGED PORPHYRINS - NEW MODELS FOR LIGHT-HARVESTING ANTENNA SYSTEMS
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DOI：
10.1126/science.8178169
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发表时间：
1994-05-20
期刊：
影响因子：
56.9
通讯作者：
THERIEN, MJ
中科院分区：
文献类型：
--
作者：
LIN, VSY;DIMAGNO, SG;THERIEN, MJ
通过金属介导的交叉偶联方法，从乙炔修饰的卟啉双金属离子制备了一类新的卟啉基生色团体系。这些系统的特点是卟啉发色团通过单乙炔基键连接在一起。这种类型的拓扑连接性提供了发色团之间特殊的电子相互作用，这在其室温光物理、光谱和电化学中表现出来;这些光谱特征表明这些物种模拟了生物集光天线系统的许多基本特征。
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 photo-physics, optical spectroscopy, and electrochemistry; these spectroscopic signatures indicate that these species model many of the essential characteristics of biological light-harvesting antenna systems.