Jump to main content
Jump to site search

Issue 18, 2019
Previous Article Next Article

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

Author affiliations

Abstract

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 β-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 β-tetraaminophthalocyanine, we find supporting evidence for the hybridization of energy levels at the organic/inorganic interface. This work suggests that spectroelectrochemistry is capable of revealing the electronic structure of complex nanomaterials, such as semiconductor nanocrystals functionalized with organic pi-systems.

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

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 Jan 2019, accepted on 18 Feb 2019 and first published on 18 Feb 2019


Article type: Perspective
DOI: 10.1039/C9CP00301K
Phys. Chem. Chem. Phys., 2019,21, 8992-9001

  •   Request permissions

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

    M. Weber, S. Westendorf, B. Märker, K. Braun and M. Scheele, Phys. Chem. Chem. Phys., 2019, 21, 8992
    DOI: 10.1039/C9CP00301K

Search articles by author

Spotlight

Advertisements