Synthesis and Characterization of pH-responsive Material with Aggregation-induced Emission Property

Jia-hui WANG; Xiao-xuan ZENG; Yue WU; Xu-chen LYU; Xiang-kui REN; Zhen-qiang YU

doi:10.37188/CJL.20210020

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Synthesis and Characterization of pH-responsive Material with Aggregation-induced Emission Property

Invited Paper | 更新时间：2021-03-19

- Synthesis and Characterization of pH-responsive Material with Aggregation-induced Emission Property
- Chinese Journal of Luminescence Vol. 42, Issue 3, Pages: 311-318(2021)
- 作者机构：
  
  1.天津大学化工学院化学工程联合国家重点实验室，天津　 300350；
  2.深圳大学化学与环境工程学院，广东深圳　 518037
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(21875157);the open foundation of State Key Laboratory of Chemical Engineering(SKL-ChE-20B04)
- DOI：10.37188/CJL.20210020
  CLC： O482.31
- Published：01 March 2021，
  
  Received：10 January 2021，
  
  Revised：02 February 2021，
- 稿件说明：
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JIA-HUI WANG, XIAO-XUAN ZENG, YUE WU, et al. Synthesis and Characterization of pH-responsive Material with Aggregation-induced Emission Property. [J]. Chinese journal of luminescence, 2021, 42(3): 311-318.
DOI：

JIA-HUI WANG, XIAO-XUAN ZENG, YUE WU, et al. Synthesis and Characterization of pH-responsive Material with Aggregation-induced Emission Property. [J]. Chinese journal of luminescence, 2021, 42(3): 311-318. DOI： 10.37188/CJL.20210020.

摘要

聚集诱导发光(Aggregation-induced emission，AIE)由于在超分子化学、生物学以及材料科学方面起着非常重要的作用而受到人们的广泛关注。为拓展AIE分子在生物机体的内环境或自然环境中的应用，水溶性的AIE分子更是受到高度关注。本工作合成了以二氰基二苯乙烯基苯为发光基元、磺酸基为亲水基元的水溶性AIE分子DCS-SO

，并对其光物理性能进行了研究。光谱实验结果表明，

能够以水作为良溶剂，并伴随着四氢呋喃的加入呈现聚集诱导发光的性质。同时，由于磺酸基具有可逆结合质子的能力，DCS-SO

可在酸性环境中结合H

＋

发生质子化，以DCS-SO

H形式存在；在碱性环境中脱去质子，以

的形式存在。因此，DCS-SO

是一种具有AIE性质和pH响应性能的新型亲水性材料。

Abstract

Aggregation-induced emission(AIE) luminogens have attracted considerable attention for its important role in supramolecular chemistry

biology and materials science

especially

those with water-solubility which were highlighted because of the application in the internal environment of biological organism or natural environment. In this work

a water-soluble AIE molecule(

) with dicyanodistyrylbenzene(DCS) as the luminescent moiety and sulfonic group as the hydrophilic unit was synthesized

and its optical properties were systematically studied. Spectroscopic studies suggested that the addition of the poor solvent acetonitrile to the aqueous solution caused the formation of

nanoparticles and the AIE phenomena were demonstrated. Furthermore

as the sulfonic group has the ability to bind protons reversibly

the absorption peaks of DCS-SO

were blue-shift after the addition of acid. Moreover

the color change process was reversible upon pH change. By making use of the AIE property and chemical reactivity towards OH

is able to respond pH within the pH range from 1 to 13 by showing different emission colors and intensities: strong to weak blue emission within the pH range from 1 to 7 and weak blue emission to strong orange emission within the pH range from 8 to 13. According to AIE mechanism

the reason for pH-mediated optical properties of

was studied. Therefore

is a new material with the AIE and pH-responsive properties.

关键词

聚集诱导发光pH响应二氰基二苯乙烯基苯酸碱调控

Keywords

aggregation-induced emissionpH-responsivedicyanodistyrylbenzeneacid-base regulation

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School of Chemical Engineering and Technology， State Key Laboratory of Chemical Engineering， Tianjin University

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School of Chemical Engineering and Technology， Tianjin University

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