title: Size-dependent thermochromism through enhanced electron-phonon coupling in 1 nm quantum dots.
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.
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522 (Japan).
authors.forename: Haruna
authors.initials: H
authors.lastname: Tamaki
authors.forename: Hiroto
authors.initials: H
authors.lastname: Watanabe
authors.forename: Sachiko
authors.initials: S
authors.lastname: Kamiyama
authors.forename: Yuya
authors.initials: Y
authors.lastname: Oaki
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Imai
keywords: microporous materials; quantum dots; template synthesis; transition metal oxide