Alayered yttrium phosphonate based on N-(phosphonomethyl)glycine (H 3 L) and of formula Y(PO 3 CH 2 NHCH 2 COOH)(HPO 3 CH 2 NHCH 2 COOH)was synthe- sized in mild hydrothermal conditions. Its crystal structure was first determined by single-crystal X-ray diffraction. Then, the synthetic parameters were changed in order to reduce the particle size of the compound. The use of microwave (MW) irradiation during the synthesis allowed a) to obtain the compound in form of nanoparticles(NP) in the 50– 300 nm range dispersed in water,b)tostrongly reduce the reaction time by afactor 150, and c) to successfully intro- duce into the structure small amountsofaluminescent ion like terbium(III) as an isomorphic substituent of yttrium(III). The obtained NP wer eused to prepare composite materials by dispersing them in poly(3,4-ethylenedioxythiophene):po- ly(styrenesulfonate) (PEDOT:PSS). The resulting optical, pho- tophysical, morphological and electrical properties of modi- fied and pristine PEDOT:PSS films were investigated and compared, in order to test the potential use of Y(H 2 L)(HL) NP as luminescent downshifting materials in optoelectro nic devices.
Layered Tb-Doped Yttrium Carboxyphosphonate Nanocrystals as Efficient Filler for PEDOT: PSS Composite Films
POSATI, TAMARA;NOCCHETTI, Morena;VIVANI, Riccardo;SERI, MIRKO;COSTANTINO, FERDINANDO
2017
Abstract
Alayered yttrium phosphonate based on N-(phosphonomethyl)glycine (H 3 L) and of formula Y(PO 3 CH 2 NHCH 2 COOH)(HPO 3 CH 2 NHCH 2 COOH)was synthe- sized in mild hydrothermal conditions. Its crystal structure was first determined by single-crystal X-ray diffraction. Then, the synthetic parameters were changed in order to reduce the particle size of the compound. The use of microwave (MW) irradiation during the synthesis allowed a) to obtain the compound in form of nanoparticles(NP) in the 50– 300 nm range dispersed in water,b)tostrongly reduce the reaction time by afactor 150, and c) to successfully intro- duce into the structure small amountsofaluminescent ion like terbium(III) as an isomorphic substituent of yttrium(III). The obtained NP wer eused to prepare composite materials by dispersing them in poly(3,4-ethylenedioxythiophene):po- ly(styrenesulfonate) (PEDOT:PSS). The resulting optical, pho- tophysical, morphological and electrical properties of modi- fied and pristine PEDOT:PSS films were investigated and compared, in order to test the potential use of Y(H 2 L)(HL) NP as luminescent downshifting materials in optoelectro nic devices.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
