Opportunities and challenges for electrochemistry in studying the electronic structure of nanocrystals

Weber Michelle; Westendorf Sophia; Maerker Bjoern; Braun Kai; Scheele Marcus

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Opportunities and challenges for electrochemistry in studying the electronic structure of nanocrystals

机译：电化学研究纳米晶体电子结构的机遇与挑战

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We review the state-of-the-art of determining the electronic structure of nanocrystals in thin films by electrochemistry. Our core conclusion, the necessity of combining electrochemical with spectroscopic techniques, is illustrated with the holistic analysis of thin films of CdSe nanocrystals cross-linked with electroactive metal beta-tetraaminophthalocyanines by differential pulse voltammetry, optical spectroscopy and potential modulated absorption spectroscopy. We show that the same nanocrystals cross-linked with phthalocyanines of different metal centers exhibit rather similar electrochemical signatures, but behave distinctly different in spectroelectrochemical investigations. We argue that in one case, namely CdSe nanocrystals cross-linked with Co beta-tetraaminophthalocyanine, we find supporting evidence for the hybridization of energy levels at the organic/inorganic interface. This work suggests that spectro-electrochemistry is capable of revealing the electronic structure of complex nanomaterials, such as semiconductor nanocrystals functionalized with organic pi-systems.

机译：我们审查了通过电化学确定薄膜中纳米晶体的电子结构的最先进。我们的核心结论是通过差分脉冲伏安法，光谱光谱和电位调节吸收光谱与电活性金属β-四氨基苯酞菁交联的Cdse纳米晶体的薄膜的整体分析，表明了与光谱技术相结合的必要性。我们表明，与不同金属中心的酞菁交联的相同纳米晶体表现出相当类似的电化学签名，但在光谱电化学研究中表现明显不同。我们认为，在一种情况下，即CDSE纳米晶体与COβ-四氨基酞菁交联，我们发现有机/无机界面中能量水平杂交的支持证据。这项工作表明，光谱电化学能够揭示复合纳米材料的电子结构，例如用有机PI-Systems官能化的半导体纳米晶体。

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《Physical chemistry chemical physics: PCCP》 |2019年第18期|共10页
作者
Weber Michelle; Westendorf Sophia; Maerker Bjoern; Braun Kai; Scheele Marcus;
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Univ Tubingen Inst Phys &

Theoret Chem Morgenstelle 18 D-72076 Tubingen Germany;

Univ Tubingen Inst Phys &

Theoret Chem Morgenstelle 18 D-72076 Tubingen Germany;

Univ Tubingen Inst Phys &

Theoret Chem Morgenstelle 18 D-72076 Tubingen Germany;

Univ Tubingen Inst Phys &

Theoret Chem Morgenstelle 18 D-72076 Tubingen Germany;

Univ Tubingen Inst Phys &

Theoret Chem Morgenstelle 18 D-72076 Tubingen Germany;

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正文语种 eng
中图分类物理学;化学;
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1. Opportunities and challenges for electrochemistry in studying the electronic structure of nanocrystals [J] . Weber Michelle, Westendorf Sophia, Maerker Bjoern, Physical chemistry chemical physics: PCCP . 2019,第18期

机译：电化学研究纳米晶体电子结构的机遇与挑战
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机译：使用表面光伏光谱和光电化学研究太阳能分裂应用中半导体纳米晶体的电子特性
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机译：这项研究旨在研究电子银行业务对约旦银行盈利能力的影响。在技术革命和数字技术将新的工作机制从传统手段转变为电子手段以及银行面临的挑战之前，银行业如何发现自己。此外，本研究调查了通过互联网提供电子银行服务背后的原因，它们对总体银行服务的影响，尤其是对银行盈利能力的影响。讨论了涉及的风险和挑战包括结果和建议。结果显示，电子银行服务在短期内对银行的盈利能力有负面影响。这项研究及其独特性的重要性在于，它仅讨论电子银行业务对银行盈利能力的影响这一主题，而其他大多数研究则从总体上讨论该主题。该研究的结果是，由于银行对基础设施和培训的资本投资，电子银行对银行盈利能力的影响将是短期的特征，但从长远来看将是积极的。
8. X-ray and photoelectron spectroscopy of the structure, reactivity, and electronicstructure of semiconductor nanocrystals [R] . Hamad, K. S. 2000

机译：半导体纳米晶体的结构，反应性和电子结构的X射线和光电子能谱

Opportunities and challenges for electrochemistry in studying the electronic structure of nanocrystals

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