Influence of Substituents on Photoluminescence Properties of Thulium Bisphthalocyanine Derivatives

LIU Yun-long; WANG Juan; GAO Xue-xi; WANG Wen-jun

doi:10.3788/fgxb20113206.0622

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Influence of Substituents on Photoluminescence Properties of Thulium Bisphthalocyanine Derivatives

paper | 更新时间：2020-08-12

- Influence of Substituents on Photoluminescence Properties of Thulium Bisphthalocyanine Derivatives
- Chinese Journal of Luminescence Vol. 32, Issue 6, Pages: 622-627(2011)
- 作者机构：
  
  1. 聊城大学物理科学与信息工程学院,山东聊城,252059
  2. 聊城大学图书馆,山东聊城,252059
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20113206.0622
  CLC： O482.31
- Received：14 December 2010，
  
  Revised：28 January 2011，
  
  Published Online：22 June 2011，
  
  Published：22 June 2011
- 稿件说明：
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刘云龙, 王娟, 高学喜, 王文军. 取代基对稀土夹心双酞菁铥荧光特性的影响[J]. 发光学报, 2011,32(6): 622-627

LIU Yun-long, WANG Juan, GAO Xue-xi, WANG Wen-jun. Influence of Substituents on Photoluminescence Properties of Thulium Bisphthalocyanine Derivatives[J]. Chinese Journal of Luminescence, 2011,32(6): 622-627
刘云龙, 王娟, 高学喜, 王文军. 取代基对稀土夹心双酞菁铥荧光特性的影响[J]. 发光学报, 2011,32(6): 622-627 DOI： 10.3788/fgxb20113206.0622.

LIU Yun-long, WANG Juan, GAO Xue-xi, WANG Wen-jun. Influence of Substituents on Photoluminescence Properties of Thulium Bisphthalocyanine Derivatives[J]. Chinese Journal of Luminescence, 2011,32(6): 622-627 DOI： 10.3788/fgxb20113206.0622.

摘要

利用稳态荧光和时间分辨荧光方法研究了三明治型酞菁铥的荧光特性及其浓度、激发波长和取代基对荧光特性的影响。实验发现:3种双酞菁铥的氯仿溶液在700 nm处具有较强的荧光发射

给电子基OC

的加入使得酞菁大环上电子的离域性增强

降低了分子轨道的能级差;同时

烷氧基上非成键电子能够和共轭体系中的电子相互作用

形成p-共轭

进一步降低了-

之间的能级差

从而使荧光谱中发射峰的峰位发生红移

峰的强度也有变化。3种酞菁铥化合物在700 nm左右的荧光具有两个寿命

分别为单体和聚集体产生的

随着浓度的降低

单体成分逐渐增多。

Abstract

The fluorescence properties of three thulium bisphthalovanine compounds were studied using the steady-state fluorescence and time-resolved fluorescence spectra. Meanwhile

the effect of the concentration

excitation wavelength and substituents on the fluorescence properties was discussed. A strong fluorescence emission at about 700 nm was found in the thulium bisphthalocyanine chloroform solution. The -electron delocalizability of phthalocyanine macrocyle was strengthened

and the energy gap between and

molecular orbital decreased with the alkoxyl substitutent OC

being added. Meanwhile

there formed the p- conjugation system resulting from the interaction between non-bonding electron of OC

and electron of phthalocyanine rings

which reduced the energy gap between and

molecular orbits further

and made both the emission peak red shift and the emission intensity change. The fluorescence at about 700 nm exhibited two lifetimes

originated from the monomer and aggregates of phthalocyanines respectively. With the concentration decreasing

the components of monomer increased gradually.

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references

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