Journal
POLYMER CHEMISTRY
Volume 4, Issue 7, Pages 2224-2229Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3py00162h
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Funding
- National Natural Science Foundation of China [21202083, 21072093]
- Natural Science Foundation of Jiangsu [BK2011551]
- China Postdoctoral Science Foundation [2012M511717]
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A linear pillar[5]arene-modified conjugated polymer was synthesized, and novel side-chain polypseudorotaxanes were formed via the host-guest interactions between the pillar[5] arene unit and n-octylpyrazinium salt. Compared with the conjugated polymer which shows strong fluorescence, the polypseudorotaxanes show very weak fluorescence due to the efficient electron transfer from the conjugated backbone to the n-octylpyrazinium cation. Moreover, upon addition of chloride anion to the solution of the side-chain polypseudorotaxanes, a disassembly process occurred, leading to fluorescence recovery of the conjugated polymer. Therefore, the novel side-chain polypseudorotaxanes could serve as an efficient anion-responsive fluorescent sensor.
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