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Issue 35, 2015
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Boron ketoiminate-based conjugated polymers with tunable AIE behaviours and their applications for cell imaging

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Abstract

Three new boron ketoiminate-based conjugated polymers P1, P2, and P3 were designed and synthesized through the Sonogashira coupling reaction of 4,6-bis(4-bromophenyl)-2,2-difluoro-3-phenyl-2H-1,3,2-oxazaborinin-3-ium-2-uide (M1) with 1,4-diethynyl-2,5-bis(octyloxy)benzene (M2), 3,6-diethynyl-9-octyl-9H-carbazole (M3) and 3,7-diethynyl-10-octyl-10H-phenothiazine-S,S-dioxide (M4), respectively. All the resulting polymers showed obvious aggregation-induced emission (AIE) behaviours. Interestingly, it was found that a great difference in the electron-donating abilities of the D–A type polymer linkers can lead to the unique AIE behaviour of the alternating polymers in the aggregate state, which provides us with a practical strategy to design tunable AIE-active conjugated polymers. Most importantly, studies on MCF-7 breast cancer cell imaging revealed that the nanoparticles fabricated from the conjugated polymers could serve as promising fluorescent probes with low cytotoxicity and high photostability.

Graphical abstract: Boron ketoiminate-based conjugated polymers with tunable AIE behaviours and their applications for cell imaging

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Publication details

The article was received on 28 Jun 2015, accepted on 21 Jul 2015 and first published on 21 Jul 2015


Article type: Paper
DOI: 10.1039/C5TB01262G
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Citation: J. Mater. Chem. B, 2015,3, 7030-7036
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    Boron ketoiminate-based conjugated polymers with tunable AIE behaviours and their applications for cell imaging

    C. Dai, D. Yang, W. Zhang, X. Fu, Q. Chen, C. Zhu, Y. Cheng and L. Wang, J. Mater. Chem. B, 2015, 3, 7030
    DOI: 10.1039/C5TB01262G

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