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Updated: Apr 25, 2026

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Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
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Size-dependent thermochromism through enhanced electron-phonon coupling in 1 nm quantum dots
Haruna Tamaki1, Hiroto Watanabe, Sachiko Kamiyama
1Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522 (Japan).
Angewandte Chemie (International Ed. in English)
|August 19, 2014
Abstract:
1 nm CuO quantum dots (QDs) were produced in size-controlled super-micropores of a silica matrix. The reversible color change of the QDs from pale blue to deep green was clearly observed in a wide temperature range from 298 to 673 K. This particular thermochromism is ascribed to an enhanced bandgap shift depending on temperature with a strong electron-phonon coupling in the confined space of the 1 nm QDs.

