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- Title
Bis-Pyridine-Based Organogel with AIE Effect and Sensing Performance towards Hg 2+.
- Authors
Gao, Aiping; Han, Qingqing; Wang, Qingqing; Wan, Rong; Wu, Huijuan; Cao, Xinhua
- Abstract
A novel gelator (1) based on a bis-pyridine derivative was designed and synthesized, which could form stable gels in methanol, ethanol, acetonitrile, ethyl acetate, DMF/H2O (4/1, v/v) and DMSO/H2O (4/1, v/v). The self-assembly process of gelator 1 was studied by field emission scanning electron microscopy (FESEM), UV–vis absorption spectroscopy, fluorescence emission spectroscopy, Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction and a water contact angle experiment. Gelator 1 exhibited obvious AIE behavior. On the base of its AIE, the gel of 1 could detect Hg2+, which resulted in fluorescence quenching and a gel–sol transition. 1H NMR titration experiments with Hg2+ revealed that the metal coordination interaction induced the fluorescence quenching and the breakdown of the noncovalent interaction in the gel system. This research provides a new molecular mode for designing a functional self-assembly gel system.
- Subjects
GELATIN; FIELD emission; X-ray diffraction; NUCLEAR magnetic resonance; ULTRAVIOLET spectrometry
- Publication
Gels (2310-2861), 2022, Vol 8, Issue 8, p464
- ISSN
2310-2861
- Publication type
Article
- DOI
10.3390/gels8080464