A routeforeuropium(III)tris-pyrazolylboratecomplex[Eu(Tp)3] formationinsidetheporesof mesoporous silicananoparticles(MSNs)hasbeenestablishedtoyieldahighlyluminescentnanostruc- tured hybrid.Twodifferentinsituchemicalprecipitationtechniqueshavebeenexploredforthe nanoencapsulation oftheEu3+ complex[Eu(Tp)3] insidetheporechannelsofmesoporoussilica nanoparticles, byvaryingthesequenceorderofprecursorimpregnation.Inthe first method,theEu salt isintroducedintotheporesbywetimpregnationandremovalofthesolvent,followedbywet impregnation oftheligand.Inthesecondapproach,theadditionsequenceisreversed.Theimportanceof the additionsequencewasdemonstratedbythesuccessfulformationoftheeuropium(III)tris-pyrazolyl boratecomplexintheporenetworkbyfollowingthe first approach.Theobservedpyrazol-1-ylborate (Tp) toEu3+ intramolecular energytransfer,i.e.,theantennaeffect,verified theformationofthecomplex. Photoluminescencespectroscopy,X-raydiffraction,N2 adsorption, FTIRspectroscopy,andTEMwereused to characterizethematerial.

In situsynthesisofEu(Tp)3 complex inside the pores of mesoporous silica nanoparticles

FRERIS, Isidora;Enrichi F.;CRISTOFORI, Davide;RIELLO, Pietro;BENEDETTI, Alvise
2013

Abstract

A routeforeuropium(III)tris-pyrazolylboratecomplex[Eu(Tp)3] formationinsidetheporesof mesoporous silicananoparticles(MSNs)hasbeenestablishedtoyieldahighlyluminescentnanostruc- tured hybrid.Twodifferentinsituchemicalprecipitationtechniqueshavebeenexploredforthe nanoencapsulation oftheEu3+ complex[Eu(Tp)3] insidetheporechannelsofmesoporoussilica nanoparticles, byvaryingthesequenceorderofprecursorimpregnation.Inthe first method,theEu salt isintroducedintotheporesbywetimpregnationandremovalofthesolvent,followedbywet impregnation oftheligand.Inthesecondapproach,theadditionsequenceisreversed.Theimportanceof the additionsequencewasdemonstratedbythesuccessfulformationoftheeuropium(III)tris-pyrazolyl boratecomplexintheporenetworkbyfollowingthe first approach.Theobservedpyrazol-1-ylborate (Tp) toEu3+ intramolecular energytransfer,i.e.,theantennaeffect,verified theformationofthecomplex. Photoluminescencespectroscopy,X-raydiffraction,N2 adsorption, FTIRspectroscopy,andTEMwereused to characterizethematerial.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10278/30188
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