期刊
MACROMOLECULES
卷 54, 期 21, 页码 9906-9918出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.1c01623
关键词
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资金
- National Natural Science Foundation of China [21905176, 21801169]
- Natural Science Foundation for Distinguished Young Scholars of Guangdong Province [2020B1515020011]
- Science and Technology Plan of Shenzhen [JCYJ20190808142403590, JCYJ20190808153415062]
- Instrumental Analysis Center of Shenzhen University
A straightforward and powerful polymerization method was developed to access diverse heterochain polymers with high molecular weights and yields, demonstrating excellent stereoselectivity for the newly formed C=C adjacent to the amidine group. These polymers can be applied in various fields due to their unique properties and multiple functionalities.
Heterochain polymers play an essential role in our daily life due to their distinctive properties. Among various heteroatom-rich structures, amidine derivatives serve as a synthetically important and pharmacologically useful structural branch. In this work, we developed a straightforward and powerful polymerization to access diverse heterochain polymers with alpha,beta-unsaturated amidine units. The multicomponent polymerizations of readily accessible diynes, disulfonyl azides, and N,N-dimethylformamide dimethyl acetal proceed efficiently at room temperature, producing amidine-containing polymers with high molecular weights in high yields within merely 1 h. All of the obtained polymers are formed with excellent stereoselectivity for the newly formed C=C adjacent to the amidine group. The introduction of aggregation-induced emission (ME) luminogen together with the inherent heteroatom-rich structure feature endows these polymers with multiple functionalities. The nanoaggregates of the diethylamino-substituted polymer show remarkable and reversible fluorescence response to acid and base, and the acid-fumed polymer thin film can be used as a sensitive and reusable fluorescent probe for detecting seafood spoilage. This polymer system can also be employed as a highly selective and sensitive Au3+ sensor, and efficient gold recovery can be achieved based on its excellent gold enrichment capability. In addition, the AIE polymers can also be applied in lysosome-specific cell imaging with low cytotoxicity and excellent photostability.
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