BODIPY-based conjugated microporous polymers as reusable heterogeneous photosensitisers in a photochemical flow reactor

    • J. M. Tobina
    • J. Liub
    • H. Hayesa
    • M. Demleitnera
    • D. Ellisa
    • V. Arrighia
    • Z. Xu*b
    • F. Vilela*a
    • * Corresponding author
    • a School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, UK
    • b Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, China

    BODIPY-based conjugated microporous polymers (BDP_CMP and PHTT_BDP) have been synthesised via two distinct methods of assembly: high-yielding Suzuki–Miyaura cross-coupling of BODIPY-containing building blocks, and post-synthetic conversion of an aldehyde-equipped CMP host that was synthesised in the absence of metal-based catalysts. Both approaches yielded BODIPY-based materials featuring a high BET surface area (484–769 m2 g−1) and a bathochromic shift in the maximum light absorbance (520–550 nm). Singlet oxygen production employing the BODIPY-based materials at 530 nm was carried out heterogeneously in a commercial photochemical flow reactor.

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