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Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
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Two tetraphenylethene-containing coordination polymers for reversible mechanochromism
Si-Si Zhao1, Li Chen, Lei Wang
1Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China. chenl686@nenu.edu.cn.
Chemical Communications (Cambridge, England)
|June 16, 2017
Summary
Two novel fluorescent coordination polymers were synthesized from a tetraphenylethene derivative. These materials show reversible color changes for potential use as mechanical sensors.
Area of Science:
- Materials Science
- Polymer Chemistry
- Supramolecular Chemistry
Background:
- Tetraphenylethene (TPE) derivatives are known for their aggregation-induced emission (AIE) properties.
- Coordination polymers offer tunable structures and functionalities.
- Mechanochromic luminescence is a stimulus-responsive phenomenon with potential applications in sensing.
Purpose of the Study:
- To design and synthesize novel fluorescent coordination polymers based on a TPE derivative.
- To investigate the mechanochromic luminescence properties of the synthesized polymers.
- To explore the potential application of these polymers as mechanical sensors.
Main Methods:
- Synthesis of TPE-based coordination polymers.
- Characterization of structural and photophysical properties.
- Mechanical stimulation (grinding) and solvent immersion (DMF) experiments.
- UV-Vis absorption and fluorescence spectroscopy.
Main Results:
- Two distinct fluorescent coordination polymers were successfully synthesized.
- The polymers exhibited reversible mechanochromic luminescence, changing color from blue to green-yellow.
- These color changes were observable to the naked eye upon mechanical grinding or soaking in N,N-dimethylformamide (DMF) under UV irradiation.
- The observed luminescence changes are attributed to alterations in the polymer structure and aggregation state.
Conclusions:
- The developed coordination polymers demonstrate promising mechanochromic luminescence properties.
- These materials hold potential for development into visual mechanical sensors.
- The study highlights the utility of TPE derivatives in creating responsive functional materials.
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