Journal
BIOMACROMOLECULES
Volume 20, Issue 8, Pages 3161-3170Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.biomac.9b00741
Keywords
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Funding
- National Science Foundation for Distinguished Young Scholars [21425417]
- Natural Science Foundation of China [21835005, U1862109, 21704071]
- Jiangsu Province Science Foundation for Youths [BK20170332]
- General Program Foundation of Jiangsu Province University Science Research Project [17KJB150033]
- Shanghai Natural Science Foundation [19ZR1408800]
- General Program Foundation of Shanghai Municipal Commission of Health and Family Planning [201740107]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Fluorescent imidazolium-type poly(ionic liquid)s (PIL)s were synthesized by anion exchange of bromide (Br-) in poly(3-butyl-1-vinylimidazolium bromide) (PIL-Br) with a fluorescent anion, namely, 3-(4-(1,2,2-triphenylvinyl)phenoxy)propane-1-sulfonate (TPESO3-). Such an anion exchange provided antibacterial PILs with aggregation-induced emission (AIE) properties that simultaneously kill and image bacteria. These fluorescence and antibacterial properties could be regulated by controlling the Br-/TPESO3- ratio. The fluorescence intensity increases as this ratio increases, while the antibacterial property exhibits an opposite trend. Moreover, the AIE-type PILs are useful for fluorescently imaging dead bacteria (macroscopically and microscopically) and could effectively inhibit biofilm growth. This study provided a convenient method to obtain fluorescent PILs with adjustable antibacterial and imaging properties.
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