Effects of potassium on the supramolecular structure and electronic properties of eumelanin thin films

Borghetti P.; Goldoni A.; Castellarin-Cudia C.; Casalis L.; Herberg F.; Floreano L.; Cossaro A.; Verdini A.; Gebauer R.; Ghosh P.; Sangaletti L.

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Effects of potassium on the supramolecular structure and electronic properties of eumelanin thin films

机译：钾对金黄色素薄膜超分子结构和电子性能的影响

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The role of potassium in the formation of synthetic eumelanin aggregates is investigated by atomic force microscopy and soft-X-ray spectroscopy. Control over the thin film granularity is achieved by using K salts, in both drop casting and electrodeposition of eumelanin thin films. Further control over orientation is made possible by a suitable choice of the substrate: evidence of self-assembly is found for thin films deposited on gold. Finally, it is shown that the potassium content affects not only the samples morphology, but also the low-lying states in the valence band, where a transfer of spectral weight across the HOMO-LUMO gap is observed, disclosing possible applications of this multifunctional biomacromolecule.

机译：通过原子力显微镜和软X射线光谱法研究了钾在合成Eumelanin聚集体形成中的作用。通过在Eumelanin薄膜的滴铸和电沉积中都使用K盐，可以控制薄膜的粒度。在取向的进一步控制是通过在衬底的适当选择成为可能：自组装的证据发现沉积在金薄膜。最后，表明钾含量不仅影响样品的形态，而且还影响价带的低价状态，在价带上观察到整个HOMO-LUMO间隙的光谱重量转移，揭示了这种多功能生物大分子的可能应用。

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《Langmuir: The ACS Journal of Surfaces and Colloids》 |2010年第24期|共7页
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Borghetti P.; Goldoni A.; Castellarin-Cudia C.; Casalis L.; Herberg F.; Floreano L.; Cossaro A.; Verdini A.; Gebauer R.; Ghosh P.; Sangaletti L.;
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1. Effects of potassium on the supramolecular structure and electronic properties of eumelanin thin films [J] . Borghetti P., Goldoni A., Castellarin-Cudia C., Langmuir: The ACS Journal of Surfaces and Colloids . 2010,第24期

机译：钾对金黄色素薄膜超分子结构和电子性能的影响
2. Effects of rapid thermal annealing on the local environment, electronic structure and magnetic properties of Mn doped TiO_2 thin films [J] . Aljawfi Rezq Naji, Vij Ankush, Chae K. H., Applied Surface Science . 2018,第JULa1期

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4. STRUCTURAL AND ELECTRONIC PROPERTIES OF SELF-ASSEMBLED SUPRAMOLECULAR GRID STRUCTURES: DOPING OF SUPRAMOLECULAR THIN FILMS [C] . Symposium on electrical, optical, and magnetic properties of organic solid-state materials . 1998

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5. Electronic structure calculations of the stability of silver ultra-thin films and effects of derivatives on oligomer structures. [D] . Irving, Douglas L. 2004

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6. Evidence of Unprecedented High Electronic Conductivity in Mammalian Pigment Based Eumelanin Thin Films After Thermal Annealing in Vacuum [O] . Ludovico Migliaccio, Paola Manini, Davide Altamura, 1970

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Effects of potassium on the supramolecular structure and electronic properties of eumelanin thin films

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