Multicomponent Spiropolymerization of Diisocyanides, Diethyl Acetylenedicarboxylate, and Halogenated Quinones
| Autor: | Jianbing Shi, Yuping Dong, Junge Zhi, Zhengxu Cai, Guinan Zhu, Bin Tong, Weiqiang Fu |
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| Rok vydání: | 2021 |
| Předmět: |
Photolysis
Polymers and Plastics Chemistry Polymers Organic Chemistry Quinones Combinatorial chemistry Gel permeation chromatography chemistry.chemical_compound Monomer Alkynes Spectroscopy Fourier Transform Infrared Materials Chemistry Rhodamine B Photosensitizer Thermal stability Solubility Fourier transform infrared spectroscopy Photodegradation |
| Zdroj: | Macromolecular rapid communications. 42(12) |
| ISSN: | 1521-3927 |
| Popis: | Multicomponent spiropolymerization (MCSP) provides an efficient synthetic tool for the construction of spiropolymers based on nonspiro monomers. In this study, a method of MCSP using diisocyanides 1, diethyl acetylenedicarboxylate 2, and halogenated quinones 3 is developed for the in situ construction of bis-spiropolymers with high molecular weights (Mw up to 29 200) and good yields (up to 87.7%) under mild reaction conditions. The structure of the obtained bis-spiropolymers is confirmed by gel permeation chromatography, Fourier transform infrared spectroscopy, and nuclear magnetic resonance analysis. Halogenated bis-spiropolymers show good thermal stability, good solubility, and film-forming ability. The photosensitizer rhodamine B is used as a doping agent to induce the photodegradation of the polymer P1a3c into small-molecule segments, which results in the slow release of halogenated spiro-groups under irradiation with simulated sunlight. This finding reveals that P1a3c has the potential to be applied in pesticides. Therefore, this MCSP is a novel method for preparing halogen-containing bis-spiropolymers, which accelerates the development of multifunctional polymer materials. |
| Databáze: | OpenAIRE |
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