Sol-gel synthesis of Pr-doped silica glasses

Biswas, Arkoprovo; Sahu, J.; Acharya, H. N.

doi:10.1016/s0921-5107(96)01914-9

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…Incorporation of lanthanide ions other than Eu 3+ and Tb 3+ into sol−gel matrices has at first been done to take advantage of the unique luminescent properties of lanthanide ions in the construction of luminescent materials and devices. Luminescent sol−glasses doped with cerium(III), ,, praseodymium(III), − neodymium(III), ,− samarium(III), ,− gadolinium(III), dysprosium(III), holmium(III), erbium(III) ,,− thulium(III), and ytterbium(III) , have been studied. Special attention was paid to the Yb 3+ −Er 3+ -codoped glasses.…”

Section: Sol−gel Hybrid Materialsmentioning

confidence: 99%

Lanthanide-Based Luminescent Hybrid Materials

2009

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Koen Binnemans was born in Geel, Belgium, in 1970. He obtained his M. Sc. degree (1992) and Ph.D. degree (1996) in Chemistry at the Catholic University of Leuven, under the supervision of Prof. C. Go ¨rller-Walrand. In the period 1999-2005, he was a postdoctoral fellow of the Fund for Scientific Research Flanders (Belgium). He did postdoctoral work with Prof. Jacques Lucas (Rennes, France) and Prof. Duncan W. Bruce (Exeter, U.K.). In 2000, he received the first ERES Junior Award (ERES, European Rare-Earth and Actinide Society). From 2002 until 2005, he was (parttime) associate professor. Presently, he is professor of chemistry at the Catholic University of Leuven. His current research interests are metalcontaining liquid crystals (metallomesogens), lanthanide-mediated organic reactions, lanthanide spectroscopy, luminescent molecular materials, and ionic liquids.

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Section: Sol−gel Hybrid Materialsmentioning

confidence: 99%

Lanthanide-Based Luminescent Hybrid Materials

2009

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“…To overcome this problem, researchers have developed several ways to prepare RE-doped silica glass: The solgel method is a well-known method to prepare REdoped silica glass at temperatures far below the melting point and with high ion concentrations. [7][8][9] However, the sol-gel method generally takes time for the preparation of large monoliths so as to prevent crack generations during drying and sintering processes. 10 Another method is by impregnating porous Vycor-type glass with activator ions and sintering it into monolithic glass.…”

Section: Introductionmentioning

confidence: 99%

Luminescent sintered silica glass prepared by adsorbing Pr ions into mesoporous SiO₂–PVA nanocomposite

Ikeda

Murata

Fujino

2015

Journal of Composite Materials

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A monolithic silica glass doped with Pr3+ was prepared by immersing a mesoporous SiO2–polyvinly alcohol (PVA) nanocomposite in a Pr nitrate solution and then sintering it at 1100℃ in air. The sintered glass exhibited pink emission when excited by ultraviolet irradiation. The photoluminescence intensity of the glass depended on the total concentration of Pr ions, which was adjusted by changing the concentration of the Pr nitrate solution and the immersion time. The glass with the highest photoluminescence intensity was prepared by using a 1- or 10-mM Pr solution at an immersion time of 60 min. To reveal how the immersion conditions affected the photoluminescence intensity, we analyzed and discussed the adsorption kinetics of the Pr ions onto the surface of the mesoporous nanocomposite. At immersion times below 60 min, the Pr ions diffused into pores of the nanocomposite without aggregating. To prepare Pr3+-doped silica glass with high photoluminescence, both the concentration of the Pr solution and the immersion time must be controlled.

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