Synthesis of tetraphenylethylene-based fluorescent conjugated microporous polymers for fluorescent sensing and adsorbing iodine

Two tetraphenylethylene-based fluorescent conjugated microporous polymers were obtained by the polymerization of a CH 3 SO 3 H catalyzed Friedel−Crafts polymerization reaction. The resulting CMPs show high thermal stability with a decomposition temperature above 575 and 487 °C, and have the porosity with BET surface area of 564.8 and 44.1 m 2  g −1 , respectively. Due to the introduction of tetraphenylethylene units, the CMPs have excellent fluorescence sensing performance for I 2 with high Ksv of 1.53 × 10 5 and 9.07 × 10 4  L mol −1 . Taking advantage of such porosity, effective sorption sites, and charge-transfer interactions, which display excellent I 2 adsorption capacity in vapor with the uptake of up to 3.41 and 2.91 g g −1 .