Studies on the Preparation of Sm(AA)3/NBR Composites by in situ Reaction Method and Their Fluorescent Properties

Abstract

Abstract: Two methods were used to prepare the Sm(AA)₃/NBR composites. The photographs of SEM and TEM indicated that in situ reaction not only reduced the sizes of the particles but also made them well dispersed. The fluorescent results showed that there were two emission peaks at 379 nm(⁴D_1/2, ⁶P_7/2→ ⁶H_5/2) and 418 nm( ⁴L_15/2, ⁴G_1/2→ ⁶H_5/2) when the composites were excited by a 260 nm excitation. The emission peaks are similar to those of the free samarium ion at 374 nm and 390 nm, which belong to the emission of the central ion. The fluorescent intensity of the composites prepared by in situ reaction method is much stronger than those made by other methods. Moreover, the fluorescent intensity of these composites will be enhanced with the increase of the content of the rare earth element until the rare earth element content reaches 30%(mass fraction).

Key words: Sm(AA)₃, NBR, In situ reaction, Fluorescent property

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LIU Li, ZHANG Xiu-Juan, JIN Ri-Guang, YANG Cheng, HE Lei, ZHANG Wan, ZHANG Li-Qun . Studies on the Preparation of Sm(AA)₃/NBR Composites by in situ Reaction Method and Their Fluorescent Properties[J]. Chem. J. Chinese Universities, 2004, 25(3): 570.

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Studies on the Preparation of Sm(AA)₃/NBR Composites by in situ Reaction Method and Their Fluorescent Properties

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