真黑素的基本结构单元：吲哚醌二聚体的电子性质
Fundamental building blocks of eumelanins: electronic properties of indolequinone-dimers
摘要：
我们目前的结果从理论的INDO计算的电子结构堆叠真黑素的单体。选择5，6-二羟基吲哚（DHI或HQ）及其氧化形式（SQ和IQ）作为真黑素结构的基本吲哚组分。结果表明，这种聚集体的电子性质依赖于单体的氧化还原状态。他们还指出，在二聚体的一个亚基上存在一个额外电荷的倾向，这可能暗示着电子跳跃是真黑素中电子转移的模型机制。
英文摘要：
We present results from the theoretical INDO calculations of the electronic structure for stacked eumelanins' monomers. As basic indolic components of the eumelanin structure 5,6-dihydroxyindole (DHI or HQ) and its oxidized forms (SQ and IQ) were chosen. The results reveal dependency of electronic properties of such aggregates on monomers' redox states. They point out also a tendency to localize an extra charge on one of dimer's subunits that could be suggestive of an electron hopping as a model mechanism forthe electron transfer in eumelanins.
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