Color Tunability and Electrochemiluminescence of Silver Nanoclusters


  • This work was supported by the Marie Curie RTN POLYAMPHI and the Academy of Finland. We thank Markus Linder for providing access to the fluorescence spectrometer and Kim Miikki for assistance with the fluorescence lifetime measurements. We also thank Yvette Hancock and Christoffer Johans for useful discussions.


Colorful clusters: Silver nanoclusters consisting of only a few atoms exhibit large chemical-environment-responsive shifts of their optical absorption and emission bands, that is, large solvatochromism (see picture). The photophysical characteristics and electrochemiluminescence of the Ag clusters give them remarkable advantages over larger nanoparticles in applications such as molecular sensing.

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