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- W2374964369 abstract "Eu(BA)3 was assemblied into the channels of MCM-41 directly,then the organic-inorganic hybrid material Eu(BA)3-MCM-41 was gained,and the products were characterized by small angle XRD,IR and excitation-emission spectra.The results indicate that the assembly have more ordered mesoporous structure than MCM-41.Eu(BA)3 can act as a secondary template when it enters the channel and increase the ordered framework of mesoporous silicon.The assembly keeps some typical absorption band of MCM-41,but the disappearance of the absorption peak at the wavenumber of 3 451,1 642 cm-1 and the intensity decrease of the absorption peak at 970 cm-1 in the assembly show that the water adsorbed and the hydroxyl in MCM-41 are reduced by the entrance of Eu(BA)3.Eu(BA)3 can be bonded with the hydroxyl in the channel,thus the vibration energy of hydroxyl is reduced,then the luminescence of Eu3+ is enhanced effectively.Eu(BA)3 has a stronger absorption of the excitated light in the assembly since MCM-41 was used as a host for Eu(BA)3,and there is strong effect between the host and the guest.The assembly mainly exhibits the fluorescence of Eu(BA)3,but the luminescence of MCM-41 does not appear.It is due to the fact that Eu(BA)3 can be incorporated with MCM-41 in the assembly,where the latter transfers the energy absorded to the former,and the luminescence of the guest is highly strengthened.The weak emission peak at 588.3,593.3 nm in Eu(BA)3-MCM-41 are formed by the split of the emission peak at 591.3 nm of Eu(BA)3,which is attributed to the transition of 5D0→7F1 of Eu3+.The relative luminescent intensity of the peak at 610.2 nm which belongs to the transition of 5D0→7F2 of Eu3+ is up to 299 times more than that of Eu(BA)3.So it confirms that Eu(BA)3-MCM-41 has an excellent luminescence properties." @default.
- W2374964369 created "2016-06-24" @default.
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- W2374964369 date "2007-01-01" @default.
- W2374964369 modified "2023-09-26" @default.
- W2374964369 title "The Synthesis and Luminescence Properties of Organic-inorganic Hybrid Eu(BA)_3-MCM-41" @default.
- W2374964369 hasPublicationYear "2007" @default.
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