期刊
POLYMER INTERNATIONAL
卷 65, 期 7, 页码 841-844出版社
WILEY
DOI: 10.1002/pi.5145
关键词
poly(N-aryleneindole ether); pyridine; sensor; luminescence
资金
- National Natural Science Foundation of China [21504073, 21202134, 11447215]
- Scientific Research Fund of Sichuan Provincial Education Department [16ZA0136]
- Project of Research and Development of Applied Technology of Mianyang City of China [14G-01-3]
- Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials [11zxfk26, 14tdfk03]
A novel high-performance polyindole containing a pyridine ring (P1) was successfully prepared by the catalyst-free nucleophilic substitution polycondensation of 4-hydroxyindole with 2,6-difluoropyridine via a C - N and C - O coupling reaction process. This semirigid polyindole P1 exhibits good thermal stability, and it can be dissolved well in common organic solvents. Fluorescent spectral studies indicate that the resulting polymer shows blue-light emission at 402 nm due to the effect of intramolecular charge transfer caused by the donor - acceptor interaction between its indole and pyridine units. Moreover, the fluorescence intensity of P1 could be altered by protonation and deprotonation. Such behaviour enables it to be utilized as one kind of acid response fluorescent polymer sensor. (c) 2016 Society of Chemical Industry
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