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首页> 外文期刊>Journal of Materials Research >An unusual way to luminescent terbium molecular-level hybrid materials: Modified methyl benzole acid covalently bonded with silica as a bridge
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An unusual way to luminescent terbium molecular-level hybrid materials: Modified methyl benzole acid covalently bonded with silica as a bridge

机译:发光ter分子级杂化材料的一种不同寻常的方法:与二氧化硅作为桥键共价键合的改性甲基苯甲酸

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摘要

The syntheses of modified ortho or meta methylbenzoic acid by (3-aminopropyl)triethoxysilane and the preparation of their corresponding organic-inorganic molecular-based hybrid material with the two components equipped with covalent bonds are described. The organic part is a derivative of methyl benzoic acid, which is used to coordinate to Tb~(3+) and further introduced into silica matrices by Si-O bonds after hydrolysis and polycondensation processes. The Judd-Ofelt theory proves that covalency increases along with increasing reciprocal energy difference between the 4f~N and 4f~(N-1)5d~1 configurations. Ultraviolet absorption, phosphorescence spectra, and luminescence spectra were applied to characterize the photophysical properties of the obtained hybrid material, and the above spectroscopic data reveal that the triplet energy of modified methyl benzoic acid matches with the emissive energy level of Tb~(3+). In this way, the intramolecular energy transfer process took place within these molecular-based hybrids, and strong green emission of Tb~(3+) was obtained.
机译:描述了由(3-氨基丙基)三乙氧基硅烷合成的改性的邻或间甲基苯甲酸,以及相应的有机-无机分子基杂化材料的制备,其中杂化的两种成分带有共价键。有机部分是甲基苯甲酸的衍生物,其用于配位至Tb〜(3+),并在水解和缩聚过程后通过Si-O键进一步引入到二氧化硅基质中。 Judd-Ofelt理论证明,在4f〜N和4f〜(N-1)5d〜1构型之间,随着共价能差的增加,共价性增加。用紫外吸收,磷光光谱和发光光谱表征了所得杂化材料的光物理性质,上述光谱数据表明,改性甲基苯甲酸的三重态能量与Tb〜(3+)的发射能级相匹配。 。这样,在这些基于分子的杂化体中发生了分子内能量转移过程,并且获得了强的Tb〜(3+)绿色发​​射。

著录项

  • 来源
    《Journal of Materials Research》 |2005年第3期|p.592-598|共7页
  • 作者

    Qianming Wang; Bing Yan;

  • 作者单位

    Department of Chemistry, Tongji University, Shanghai 200092, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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