Synthesis and Characterization of 3,3',4,4'-Biphenyl Tetracarboxylic Rare Earth Complexes with Red Fluorescence

LIN Mei-juan; TANG Qiang; WANG Xiao-ping; Wang Wen; LING Qi-dan

doi:10.3788/fgxb20123308.0833

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Synthesis and Characterization of 3,3',4,4'-Biphenyl Tetracarboxylic Rare Earth Complexes with Red Fluorescence

更新时间：2020-08-12

- Synthesis and Characterization of 3,3',4,4'-Biphenyl Tetracarboxylic Rare Earth Complexes with Red Fluorescence
- Chinese Journal of Luminescence Vol. 33, Issue 8, Pages: 833-839(2012)
- 作者机构：
  
  福建师范大学材料科学与工程学院福建省高分子材料重点实验室,福建福州,350007
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123308.0833
  CLC： O614.3;O625.5
- Received：17 May 2012，
  
  Revised：17 June 2012，
  
  Published：10 August 2012
- 稿件说明：
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林美娟, 唐强, 王小萍, 王文, 凌启淡. 红色荧光联苯四甲酸碱式稀土配合物的合成及发光性能[J]. 发光学报, 2012,33(8): 833-839

LIN Mei-juan, TANG Qiang, WANG Xiao-ping, Wang Wen, LING Qi-dan. Synthesis and Characterization of 3,3',4,4'-Biphenyl Tetracarboxylic Rare Earth Complexes with Red Fluorescence[J]. Chinese Journal of Luminescence, 2012,33(8): 833-839
林美娟, 唐强, 王小萍, 王文, 凌启淡. 红色荧光联苯四甲酸碱式稀土配合物的合成及发光性能[J]. 发光学报, 2012,33(8): 833-839 DOI： 10.3788/fgxb20123308.0833.

LIN Mei-juan, TANG Qiang, WANG Xiao-ping, Wang Wen, LING Qi-dan. Synthesis and Characterization of 3,3',4,4'-Biphenyl Tetracarboxylic Rare Earth Complexes with Red Fluorescence[J]. Chinese Journal of Luminescence, 2012,33(8): 833-839 DOI： 10.3788/fgxb20123308.0833.

摘要

以3

4'-联苯四甲酸二酐(BPDA)为配体原料合成了两种碱式铕和铽配合物

通过元素分析、红外光谱和热重分析等测试技术表征了配合物的结构组成

用紫外光谱和荧光光谱研究了配合物的发光性能。结果表明:两种配合物的组成分别为Tb

(OH)

·8H

O和Eu

(OH)

·10H

=BPDA)

稀土铕(Ⅲ)和铽(Ⅲ)与羧酸根的配位方式主要以桥式配位为主

兼有少量螯合配位。这些配合物的热稳定性能良好。铽配合物和铕配合物均呈现红色荧光

铽配合物归属于

→

跃迁(613 nm)的荧光寿命为491.11 μs

归属于

→

跃迁(544 nm) 的荧光寿命为27.9 μs;铕配合物归属于

→

跃迁 (613 nm) 的荧光寿命为329.5 μs

荧光量子产率为13.05%。

Abstract

Two novel rare earth ( Eu

Tb) binary complexes with 3

4'-Biphenyl tetracarboxylic as the ligand were synthesized and characterized by elemental analysis

FT-IR

TG-DTG. The compositions of the complexes were found to be Tb

(OH)

·8H

O and Eu

(OH)

·10H

O (

=BPDA). There are two coordination modes of the carboxylate ligands in the complexes. Most of them are in bridging mode with BPDA linked to two rare earth ions

the others are in chelating mode with BPDA chelated to the same rare earth ion. These novel rare earth complexes have good thermal stability. Their photophysical properties were further investigated by UV absorption spectra and fluorescence spectra. The results indicate that both of the terbium and europium complexes exhibit red fluorescence. The fluorescence lifetime of the

→

transition (613 nm) for Tb(Ⅲ) complex is 491.1 μs

which is longer than that of the

→

transition (544 nm

27.9 μs). The fluorescence lifetime of the

→

transition (613 nm) for Eu(Ⅲ) complex is 329.5 μs. The fluorescence quantum yield of Eu(Ⅲ) complex is 13.05%.

关键词

Keywords

references

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