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Negative Additive Manufacturing of Complex Shaped Boron Carbides
Published on: September 18, 2018
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AIE-active boron complexes based on benzothiazole-hydrazone chelates.
Wenzeng Duan1, Qingsong Liu, Yanmin Huo
1Institute of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, No.1 Hunan Road, Liaocheng, 252000, People's Republic of China. gongshw@lcu.edu.cn.
Organic & Biomolecular Chemistry
|May 17, 2018
Summary
New benzothiazole-hydrazone boron complexes exhibit aggregation-induced emission (AIE). These AIE luminophores show weak fluorescence in solution but strong emission in aggregates, useful for advanced applications.
Area of Science:
- Materials Science
- Organic Chemistry
- Photophysics
Background:
- Aggregation-induced emission (AIE) is a phenomenon where molecules become emissive upon aggregation.
- Benzothiazole-hydrazone derivatives are known for their unique photophysical properties.
Purpose of the Study:
- To synthesize and characterize novel monoboron and bisboron complexes with AIE characteristics.
- To investigate the structure-property relationships governing the AIE behavior of these new complexes.
Main Methods:
- Synthesis of benzothiazole-hydrazone based monoboron and bisboron complexes.
- Photophysical characterization including fluorescence spectroscopy in solutions of varying viscosity and in aggregated states.
- Single crystal X-ray diffraction analysis.
- Theoretical calculations to elucidate AIE mechanisms.
Main Results:
- Successful synthesis of a new family of AIE-active monoboron and bisboron complexes.
- Observed weak fluorescence in solution attributed to intramolecular rotation, and strong emission in aggregated states or high-viscosity media.
- Demonstrated large Stokes shifts (3590-7400 cm-1) and efficient solid-state emission.
Conclusions:
- The synthesized boron complexes exhibit significant AIE properties.
- Structural and theoretical analyses confirm the mechanism behind the observed AIE.
- These AIE luminophores hold promise for various applications requiring efficient solid-state emitters.
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