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Visible-light responsive hydrogen-bonded supramolecular polymers based on ortho-tetrafluorinated azobenzene

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Abstract

Novel visible-light responsive hydrogen-bonded supramolecular polymers have been successfully constructed by using a linear molecule, which consists of two ureido-pyrimidinone (UPy) moieties connected by a photochromic ortho-tetrafluorinated azobenzene (TFAB) linker. Benefiting from the visible-light responsive feature of the TFAB unit, reversible photoisomerization between the two isomers of the monomer can be achieved. The E-isomer prefers to form a linear supramolecular polymer through the intermolecular quadruple hydrogen bonding interactions between UPys, whereas the Z-isomer facilely forms a cyclic dimer. Therefore, the polymerization mechanisms and properties of such supramolecular polymers, e.g. reversible visible-light induced gel–sol transformation behaviour, can be regulated by the reversible visible-light triggered E/Z photo-isomerization of the TFAB chromophore.

Graphical abstract: Visible-light responsive hydrogen-bonded supramolecular polymers based on ortho-tetrafluorinated azobenzene

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Publication details

The article was received on 20 Sep 2017, accepted on 10 Nov 2017 and first published on 13 Nov 2017


Article type: Paper
DOI: 10.1039/C7PY01612C
Citation: Polym. Chem., 2017, Advance Article
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    Visible-light responsive hydrogen-bonded supramolecular polymers based on ortho-tetrafluorinated azobenzene

    T. Zhan, M. Lin, J. Wei, L. Liu, M. Yun, L. Wu, S. Zheng, H. Yin, L. Kong and K. Zhang, Polym. Chem., 2017, Advance Article , DOI: 10.1039/C7PY01612C

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