Synthesis of julolidine-containing nonlinear optical chromophores: Achieving excellent electro-optic activity by optimizing the bridges and acceptors
| Autor: | Shuhui Bo, Ling Qiu, Huajun Xu, Jialei Liu, Hua Zhang, Xinhou Liu, Fenggang Liu, Zhen Zhen, Lu Chen |
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| Rok vydání: | 2016 |
| Předmět: |
Process Chemistry and Technology
General Chemical Engineering Solvatochromism Doping 02 engineering and technology Chromophore 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Decomposition Acceptor 0104 chemical sciences chemistry.chemical_compound chemistry Thiophene 0210 nano-technology Julolidine Pyrrole |
| Zdroj: | Dyes and Pigments. 134:358-367 |
| ISSN: | 0143-7208 |
| DOI: | 10.1016/j.dyepig.2016.07.038 |
| Popis: | Two series of highly efficient nonlinear optical chromophores A1-C1 and A2-C2 based on the julolidinyl donors and tricyanofuran or phenyl-trifluoromethyl-tricyanofuran acceptors (CF 3 -Ph-TCF) linked together via π-conjugation through thiophene or pyrrole or tetraene moieties as the bridges, have been synthesized and investigated. The ultraviolet absorption, solvatochromic, thermal stabilities and electro-optic activities of these chromophores were systematically studied to illustrate structure-performance relationships within the six chromophores. All the chromophores exhibited good thermal stabilities with the decomposition temperatures (T d ) higher than 200 °C. Appropriate combination of the π-conjugated bridge, electron-donor and electron-acceptor as well as the isolated group in the chromophores plays an important role in achieving larger electro-optic activities. Exemplified by the chromophore A2 with CF 3 -Ph-TCF acceptor, it gave a very large r 33 value of 223 pmV −1 at 1310 nm at the doping concentration of 25 wt%. |
| Databáze: | OpenAIRE |
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