<b>Abstract:</b> The single-crystal to single-crystal (SCSC) synthesis of a 1D polymer based on photopolymerization triggered [4+4] cycloaddition is reported. The polymer crystal is analyzed by single-crystal X-ray diffraction, which is the first crystal example of 1D polymer based on [4+4] cycloaddition of anthracene. Temperature is an important factor here influenced the polymer synthesis process. The polymer can be synthesized under light irradiation only at about 265 K. The polymer could depolymerize into intermediate and monomer at lower temperature, which is a very rare example of depolymerization at low temperature. From kinetic analysis, the polymer first depolymerized to intermediate and then monomer. This finding not only provides a novel polymer crystal structure, but also serves methods of [4+4] cycloaddition depend on temperature.

Obtaining large-size single crystals of linear anthracene polymer through light–triggered topochemical polymerization

2019 Spring National Meeting

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