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arXiv 0905.3666cond-mat.mtrl-scicond-mat.mes-hall
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光系统I -碳纳米管杂化体系的光电性质

Optoelectronic properties of a photosystem I - carbon nanotube hybrid system

Simone Kaniber, Friedrich Simmel, Alexander Holleitner, Itai Carmeli

摘要:

测量了碳纳米管(CNTs)与光系统I(PSI)的光电导特性。我们证明,PSI形成主动电子结的CNT使控制的CNT光电导的PSI。为了电接触光活性蛋白,通过基因工程在PSI的一端产生半胱氨酸突变体。CNT使用碳二亚胺化学共价结合到该反应性基团。我们检测到增强的光电导信号的混合材料在光子波长共振的PSI的吸收最大值相比,非共振波长。实验结果表明,在纳米尺度上将光合作用蛋白质集成到光电子电路中是可行的。

英文摘要:

The photoconductance properties of photosystem I (PSI) covalently bound to carbon nanotubes (CNTs) are measured. We demonstrate that the PSI forms active electronic junctions with the CNTs enabling control of the CNTs photoconductance by the PSI. In order to electrically contact the photoactive proteins, a cysteine mutant is generated at one end of the PSI by genetic engineering. The CNTs are covalently bound to this reactive group using carbodiimide chemistry. We detect an enhanced photoconductance signal of the hybrid material at photon wavelengths resonant to the absorption maxima of the PSI compared to nonresonant wavelengths. The measurements prove that it is feasible to integrate photosynthetic proteins into optoelectronic circuits at the nanoscale.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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