Synthesis and photoluminescence properties of Eu 3+ -doped silica@coordination polymer core-shell structures and their calcinated silica@Gd 2 O 3 :Eu and hollow Gd 2 O 3 :Eu microsphere products

Hee Jung Lee, Ju Un Park, Sora Choi, Juhee Son, Moonhyun Oh

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The conjugation of Eu 3+ -doped coordination polymers constructed from Gd 3+ and isophthalic acid (H 2 IPA) with silica particles is investigated for the production of luminescent microspheres. A series of doping ratio-controlled silica@coordination polymer core-shell spheres is easily synthesized by altering the amounts of metal nodes used in the reactions, where the ratios of Gd 3+ and Eu 3+ are 10:0 (1a), 9:1 (1b), 8:2 (1c), 7:3 (1d), 5:5 (1e), and 0:10 (1f). The formation of monodisperse uniform core-shell structures is achieved throughout the entirety of a series. Investigations of the photoluminescence property of the resulting series of silica@coordination polymer core-shell spheres reveal that 20% Eu 3+ -doped product (1c) has the strongest emission intensity. The subsequent calcination process on the silica@coordination polymer core-shell structures (1a-f) results in the formation of a series of doping ratio-controlled silica@Gd 2 O 3 :Eu core-shell microspheres (2a-f) with uniform shell thickness. During the calcination step, the coordination polymers within silica@coordination polymer core-shells are transformed into metal oxides, resulting in silica@Gd 2 O 3 :Eu core-shell structures. The final etching process on the silica@Gd 2 O 3 :Eu core-shell microspheres (2a-f) produces a series of hollow Gd 2 O 3 :Eu microspheres (3a-f) as a result of the elimination of silica cores. The luminescence intensities of silica@Gd 2 O 3 :Eu core-shell (2a-f) and hollow Gd 2 O 3 :Eu microspheres (3a-f) also vary depending upon the doping ratio of Eu 3+ ions. A series of monodisperse Eu 3+ -doped luminescent silica@coordination polymer core-shell microspheres is synthesized through the growth of coordination polymers on silica surfaces. The doping ratio is controlled by altering the amounts of metal ions used in the reactions. The subsequent calcination and etching processes result in the formation of doping ratio-controlled luminescent silica@Gd 2 O 3 :Eu core-shell and hollow Gd 2 O 3 :Eu microspheres.

Original languageEnglish
Pages (from-to)561-569
Number of pages9
JournalSmall
Volume9
Issue number4
DOIs
Publication statusPublished - 2013 Feb 25

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Microspheres
Silicon Dioxide
Photoluminescence
Polymers
Silica
Doping (additives)
Calcination
Metals
Etching
Ions
Luminescence
Oxides
Metal ions

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

Cite this

@article{5c62e34c8d254d3d82c1ce8601e0a69c,
title = "Synthesis and photoluminescence properties of Eu 3+ -doped silica@coordination polymer core-shell structures and their calcinated silica@Gd 2 O 3 :Eu and hollow Gd 2 O 3 :Eu microsphere products",
abstract = "The conjugation of Eu 3+ -doped coordination polymers constructed from Gd 3+ and isophthalic acid (H 2 IPA) with silica particles is investigated for the production of luminescent microspheres. A series of doping ratio-controlled silica@coordination polymer core-shell spheres is easily synthesized by altering the amounts of metal nodes used in the reactions, where the ratios of Gd 3+ and Eu 3+ are 10:0 (1a), 9:1 (1b), 8:2 (1c), 7:3 (1d), 5:5 (1e), and 0:10 (1f). The formation of monodisperse uniform core-shell structures is achieved throughout the entirety of a series. Investigations of the photoluminescence property of the resulting series of silica@coordination polymer core-shell spheres reveal that 20{\%} Eu 3+ -doped product (1c) has the strongest emission intensity. The subsequent calcination process on the silica@coordination polymer core-shell structures (1a-f) results in the formation of a series of doping ratio-controlled silica@Gd 2 O 3 :Eu core-shell microspheres (2a-f) with uniform shell thickness. During the calcination step, the coordination polymers within silica@coordination polymer core-shells are transformed into metal oxides, resulting in silica@Gd 2 O 3 :Eu core-shell structures. The final etching process on the silica@Gd 2 O 3 :Eu core-shell microspheres (2a-f) produces a series of hollow Gd 2 O 3 :Eu microspheres (3a-f) as a result of the elimination of silica cores. The luminescence intensities of silica@Gd 2 O 3 :Eu core-shell (2a-f) and hollow Gd 2 O 3 :Eu microspheres (3a-f) also vary depending upon the doping ratio of Eu 3+ ions. A series of monodisperse Eu 3+ -doped luminescent silica@coordination polymer core-shell microspheres is synthesized through the growth of coordination polymers on silica surfaces. The doping ratio is controlled by altering the amounts of metal ions used in the reactions. The subsequent calcination and etching processes result in the formation of doping ratio-controlled luminescent silica@Gd 2 O 3 :Eu core-shell and hollow Gd 2 O 3 :Eu microspheres.",
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Synthesis and photoluminescence properties of Eu 3+ -doped silica@coordination polymer core-shell structures and their calcinated silica@Gd 2 O 3 :Eu and hollow Gd 2 O 3 :Eu microsphere products . / Lee, Hee Jung; Park, Ju Un; Choi, Sora; Son, Juhee; Oh, Moonhyun.

In: Small, Vol. 9, No. 4, 25.02.2013, p. 561-569.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synthesis and photoluminescence properties of Eu 3+ -doped silica@coordination polymer core-shell structures and their calcinated silica@Gd 2 O 3 :Eu and hollow Gd 2 O 3 :Eu microsphere products

AU - Lee, Hee Jung

AU - Park, Ju Un

AU - Choi, Sora

AU - Son, Juhee

AU - Oh, Moonhyun

PY - 2013/2/25

Y1 - 2013/2/25

N2 - The conjugation of Eu 3+ -doped coordination polymers constructed from Gd 3+ and isophthalic acid (H 2 IPA) with silica particles is investigated for the production of luminescent microspheres. A series of doping ratio-controlled silica@coordination polymer core-shell spheres is easily synthesized by altering the amounts of metal nodes used in the reactions, where the ratios of Gd 3+ and Eu 3+ are 10:0 (1a), 9:1 (1b), 8:2 (1c), 7:3 (1d), 5:5 (1e), and 0:10 (1f). The formation of monodisperse uniform core-shell structures is achieved throughout the entirety of a series. Investigations of the photoluminescence property of the resulting series of silica@coordination polymer core-shell spheres reveal that 20% Eu 3+ -doped product (1c) has the strongest emission intensity. The subsequent calcination process on the silica@coordination polymer core-shell structures (1a-f) results in the formation of a series of doping ratio-controlled silica@Gd 2 O 3 :Eu core-shell microspheres (2a-f) with uniform shell thickness. During the calcination step, the coordination polymers within silica@coordination polymer core-shells are transformed into metal oxides, resulting in silica@Gd 2 O 3 :Eu core-shell structures. The final etching process on the silica@Gd 2 O 3 :Eu core-shell microspheres (2a-f) produces a series of hollow Gd 2 O 3 :Eu microspheres (3a-f) as a result of the elimination of silica cores. The luminescence intensities of silica@Gd 2 O 3 :Eu core-shell (2a-f) and hollow Gd 2 O 3 :Eu microspheres (3a-f) also vary depending upon the doping ratio of Eu 3+ ions. A series of monodisperse Eu 3+ -doped luminescent silica@coordination polymer core-shell microspheres is synthesized through the growth of coordination polymers on silica surfaces. The doping ratio is controlled by altering the amounts of metal ions used in the reactions. The subsequent calcination and etching processes result in the formation of doping ratio-controlled luminescent silica@Gd 2 O 3 :Eu core-shell and hollow Gd 2 O 3 :Eu microspheres.

AB - The conjugation of Eu 3+ -doped coordination polymers constructed from Gd 3+ and isophthalic acid (H 2 IPA) with silica particles is investigated for the production of luminescent microspheres. A series of doping ratio-controlled silica@coordination polymer core-shell spheres is easily synthesized by altering the amounts of metal nodes used in the reactions, where the ratios of Gd 3+ and Eu 3+ are 10:0 (1a), 9:1 (1b), 8:2 (1c), 7:3 (1d), 5:5 (1e), and 0:10 (1f). The formation of monodisperse uniform core-shell structures is achieved throughout the entirety of a series. Investigations of the photoluminescence property of the resulting series of silica@coordination polymer core-shell spheres reveal that 20% Eu 3+ -doped product (1c) has the strongest emission intensity. The subsequent calcination process on the silica@coordination polymer core-shell structures (1a-f) results in the formation of a series of doping ratio-controlled silica@Gd 2 O 3 :Eu core-shell microspheres (2a-f) with uniform shell thickness. During the calcination step, the coordination polymers within silica@coordination polymer core-shells are transformed into metal oxides, resulting in silica@Gd 2 O 3 :Eu core-shell structures. The final etching process on the silica@Gd 2 O 3 :Eu core-shell microspheres (2a-f) produces a series of hollow Gd 2 O 3 :Eu microspheres (3a-f) as a result of the elimination of silica cores. The luminescence intensities of silica@Gd 2 O 3 :Eu core-shell (2a-f) and hollow Gd 2 O 3 :Eu microspheres (3a-f) also vary depending upon the doping ratio of Eu 3+ ions. A series of monodisperse Eu 3+ -doped luminescent silica@coordination polymer core-shell microspheres is synthesized through the growth of coordination polymers on silica surfaces. The doping ratio is controlled by altering the amounts of metal ions used in the reactions. The subsequent calcination and etching processes result in the formation of doping ratio-controlled luminescent silica@Gd 2 O 3 :Eu core-shell and hollow Gd 2 O 3 :Eu microspheres.

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