Size‐Dependent Thermochromism through Enhanced Electron–Phonon Coupling in 1 nm Quantum Dots | Zendy

Tamaki Haruna | Zendy; Watanabe Hiroto | Zendy; Kamiyama Sachiko | Zendy; Oaki Yuya | Zendy; Imai Hiroaki | Zendy

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Size‐Dependent Thermochromism through Enhanced Electron–Phonon Coupling in 1 nm Quantum Dots

Author(s) -

Tamaki Haruna,

Watanabe Hiroto,

Kamiyama Sachiko,

Oaki Yuya,

Imai Hiroaki

Publication year - 2014

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201406330

Subject(s) - thermochromism , quantum dot , materials science , coupling (piping) , band gap , blueshift , condensed matter physics , phonon , electron , atmospheric temperature range , optoelectronics , matrix (chemical analysis) , photoluminescence , physics , quantum mechanics , composite material , meteorology

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.

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