Acta Chim. Sinica ›› 2016, Vol. 74 ›› Issue (11): 942-948.DOI: 10.6023/A16080406 Previous Articles    



彭喆, 季迎春, 王智, 佟斌, 石建兵, 董宇平   

  1. 北京理工大学材料学院 结构可控先进功能材料与绿色应用重点实验室 北京 100081
  • 投稿日期:2016-08-13 发布日期:2016-12-03
  • 通讯作者: 佟斌, 董宇平;
  • 基金资助:


Properties of Polymorphism and Acid Response of Pyrrolopyrrole-based Derivative with Aggregation-induced Emission Behavior

Peng Zhe, Ji Yingchun, Wang Zhi, Tong Bin, Shi Jianbing, Dong Yuping   

  1. School of Materials Science and Engineering, Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Beijing Institute of Technology, Beijing 100081
  • Received:2016-08-13 Published:2016-12-03
  • Supported by:

    Project supported by the National Basic Research Program of China (973 Program:2013CB834704) and National Natural Science Foundation of China (Nos.:51328302, 21474009).

A new A-D-A type pyrrolopyrrole-based derivative 4',4"-(2,5-diphenyl-pyrrolo[3,2-b]pyrrole-1,4-diyl)bis ([1,1'-biphenyl]-4-carbonitrile) (DPPDC) was synthesized via Suzuki coupling reaction between 1,4-bis(4-bromophenyl)-2,5-diphenyl-1,4-dihydropyrrolo[3,2-b]pyrrole and 4-cyanophenylboronic acid. The fluorescent emission intensities of DPPDC in pure THF solution and lower fraction of water (φH2O≤60%) mixtures were weak at around 550 nm. When φH2O was 99% in THF/H2O mixtures, the emission was enhanced and blue-shifted at around 505 nm. The maximal fluorescent emission intensity of DPPDC was 11 times higher than that of in pure THF solution, indicating DPPDC exhibiting AIE property. It was also found that four different kinds of crystal structures of DPPDC was cultivated from CHCl2-Hexane, CHCl3-Hexane and CHCl3/Acetone-Hexane systems via solvent slow diffusion method. Four crystals respec-tively emitted blue, azure, green and turquoise at 467, 483, 496 and 493 nm, which manifested the polymorphism-dependent fluorescent emission property of DPPDC. Additionally, trifluoroacetic acid (TFA) could make the emitting color change from yellow to orange-red with as-prepared paper containing DPPDC due to the acid-base interaction. The obvious emitting color change of DPPDC can be used as a visual sensor to detect acid gas.

Key words: polymorphism, pyrrolopyrrole, acid response, aggregation-induced emission