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Tunable Photoluminescence across the Visible Spectrum and Photocatalytic Activity of Mixed-Valence Rhenium Oxide Nanoparticles

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Title
Tunable Photoluminescence across the Visible Spectrum and Photocatalytic Activity of Mixed-Valence Rhenium Oxide Nanoparticles
Author(s)
Yong-Kwang Jeong; Young Min Lee; Jeonghun Yun; Tomasz Mazur; Minju Kim; Young Jae Kim; Miroslaw Dygas; Sun Hee Choi; Kwang S. Kim; Oh-Hoon Kwon; Seok Min Yoon; Bartosz A. Grzybowski
Publication Date
2017-10
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.139, no.42, pp.15088 - 15093
Publisher
AMER CHEMICAL SOC
Abstract
Materials exhibiting excitation-wavelength-dependent photoluminescence, PL, are useful in a range of biomedical and optoelectronic applications. This paper describes a nanoparticulate material whose PL is tunable across the entire visible range and is achieved without adjusting particle size, any postsynthetic doping, or surface modification. A straightforward thermal decomposition of rhenium (VII) oxide precursor yields nanoparticles that comprise Re atoms at different oxidation states. Studies of time-resolved emission spectra and DFT calculations both indicate that tunable PL of such mixed-valence particles originates from the presence of multiple emissive states that become active at different excitation wavelengths. In addition, the nanoparticles exhibit photocatalytic activity that, under visible-light irradiation, is superior to that of TiO2 nanomaterials. © 2017 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/4220
ISSN
0002-7863
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > Journal Papers (저널논문)
Files in This Item:
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