Citation: Qing Liu, Shusheng Yue, Zhangqiang Yan, Yongfa Xie, Hu Cai. Cyano and Isocyano-substituted Tetraphenylethylene with AIE Behavior and Mechanoresponsive Behavior[J]. Chinese Journal of Structural Chemistry, ;2022, 41(4): 220407. doi: 10.14102/j.cnki.0254-5861.2021-0049 shu

Cyano and Isocyano-substituted Tetraphenylethylene with AIE Behavior and Mechanoresponsive Behavior

Qing Liu ¹ ,
Shusheng Yue ¹ ,
Zhangqiang Yan ¹ ,
Yongfa Xie ^1,, ,
Hu Cai ^1,,

1.
School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China

Corresponding author: Yongfa Xie, xieyf@ncu.edu.cn Hu Cai, caihu@ncu.edu.cn
Received Date: 25 December 2021
Accepted Date: 7 April 2022

Figures(8)

Dual-functional materials with AIE behavior and mechanoresponsive behavior have attracted considerable attention due to their promising applications in mechano-sensors, optical storage, solid-state optoelectric devices and bioimage systems. AIEgens bearing tetraphenylethylene (TPE) core become elementary building blocks in many fluorescent functional materials. In this article, cyano- and isocyano-electronic withdrawing groups are incorporated with TPE skeleton to form tetracyanophenylethylene (TPE-CN) and tetraisocyanophenylethylene (TPE-NC). Their structures are confirmed by NMR, Mass Spectra and single crystal X-ray measurement. These two isomers reflect aggregation-induced emission (AIE) property in solution state and mechanochromic behavior in solid state. Interestingly, their luminescent intensities, quantum yields and fluorescent lifetime in solid state have an obvious increase upon grinding. The theoretical calculation of these two compounds clarify their difference in optical properties. The mechanochromic mechanism is also intensively explained by powder X-ray measurements.
- cyano-group,
- isocyano-group,
- tetraphenylethlene (TPE),
- aggregation induced emission (AIE),
- mechanochromic
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沈阳化工大学材料科学与工程学院沈阳 110142