Hexasubstituted Benzenes with Ultrastrong Dipole Moments
| Autor: | Martin Baumgarten, Dieter Schollmeyer, Vasilis Margaritis, George Floudas, Felix Hinkel, Jakob Wudarczyk, George Papamokos, Klaus Müllen |
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| Rok vydání: | 2016 |
| Předmět: |
Organic solar cell
Chemistry Nonlinear optics 02 engineering and technology General Chemistry Electrophilic aromatic substitution 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis Fluorescence spectroscopy 0104 chemical sciences Dielectric spectroscopy Dipole Nuclear magnetic resonance Benzene derivatives Physical chemistry 0210 nano-technology Absorption (electromagnetic radiation) |
| Zdroj: | Angewandte Chemie International Edition. 55:3220-3223 |
| ISSN: | 1433-7851 |
| Popis: | Hexasubstituted benzenes have been synthesized with the highest known dipole moments, as determined by dielectric spectroscopy and DFT methods. Based on the preparation of 4,5-diamino-3,6-dibromophthalonitrile, combined with a novel method to synthesize dihydrobenzimidazoles, these benzene derivatives have dipole moments in excess of 10 debye. Such dipole moments are desirable in ferroelectrics, nonlinear optics, and in organic photovoltaics. Structure determination was achieved through single-crystal X-ray crystallography, and the optical properties were determined by UV/Vis absorption and fluorescence spectroscopy. |
| Databáze: | OpenAIRE |
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