Broadband visible emissions from sol-gel-derived silica/poly(vinyl pyrrolidone) hybrids

Shinobu Fujihara; Seiki Kitta

doi:10.1016/j.cplett.2004.09.014

Broadband visible emissions from sol-gel-derived silica/poly(vinyl pyrrolidone) hybrids

Shinobu Fujihara, Seiki Kitta

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Photoluminescence (PL) of poly(vinyl pyrrolidone) (PVP) and silica/PVP hybrid films was investigated. The transparent PVP film was found to exhibit bluish PL centered at approximately 440 nm in response to ultraviolet (UV) light excitation. This PL behavior was made good use of in preparing luminescent silica/PVP hybrid films with high thermal stability at temperatures up to 250 °C. Europium-doped hybrid films exhibited white PL upon UV excitation, resulting from mixing of broadband PVP emissions and ⁵D₀ → ⁷F₂ emissions of Eu³⁺. Emission colors could be finely tuned by changing excitation wavelengths.

Original language	English
Pages (from-to)	479-483
Number of pages	5
Journal	Chemical Physics Letters
Volume	397
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2004.09.014
Publication status	Published - 2004 Oct 21

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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title = "Broadband visible emissions from sol-gel-derived silica/poly(vinyl pyrrolidone) hybrids",

abstract = "Photoluminescence (PL) of poly(vinyl pyrrolidone) (PVP) and silica/PVP hybrid films was investigated. The transparent PVP film was found to exhibit bluish PL centered at approximately 440 nm in response to ultraviolet (UV) light excitation. This PL behavior was made good use of in preparing luminescent silica/PVP hybrid films with high thermal stability at temperatures up to 250 °C. Europium-doped hybrid films exhibited white PL upon UV excitation, resulting from mixing of broadband PVP emissions and 5D0 → 7F2 emissions of Eu3+. Emission colors could be finely tuned by changing excitation wavelengths.",

author = "Shinobu Fujihara and Seiki Kitta",

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journal = "Chemical Physics Letters",

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T1 - Broadband visible emissions from sol-gel-derived silica/poly(vinyl pyrrolidone) hybrids

AU - Fujihara, Shinobu

AU - Kitta, Seiki

PY - 2004/10/21

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N2 - Photoluminescence (PL) of poly(vinyl pyrrolidone) (PVP) and silica/PVP hybrid films was investigated. The transparent PVP film was found to exhibit bluish PL centered at approximately 440 nm in response to ultraviolet (UV) light excitation. This PL behavior was made good use of in preparing luminescent silica/PVP hybrid films with high thermal stability at temperatures up to 250 °C. Europium-doped hybrid films exhibited white PL upon UV excitation, resulting from mixing of broadband PVP emissions and 5D0 → 7F2 emissions of Eu3+. Emission colors could be finely tuned by changing excitation wavelengths.

AB - Photoluminescence (PL) of poly(vinyl pyrrolidone) (PVP) and silica/PVP hybrid films was investigated. The transparent PVP film was found to exhibit bluish PL centered at approximately 440 nm in response to ultraviolet (UV) light excitation. This PL behavior was made good use of in preparing luminescent silica/PVP hybrid films with high thermal stability at temperatures up to 250 °C. Europium-doped hybrid films exhibited white PL upon UV excitation, resulting from mixing of broadband PVP emissions and 5D0 → 7F2 emissions of Eu3+. Emission colors could be finely tuned by changing excitation wavelengths.

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

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