Dual-Functional Triphenyltriindole "Knitting Polymers" for Efficient Iodine Capture and Zn-I₂ Batteries.

ABSTRACT: This work introduces a class of nitrogen-rich porous polymers synthesized via "knitting polymerization" using a redox-active triphenyltriindole monomer. Two synthetic routes-thermal Friedel-Crafts reaction (TRIPh-d) and solvent-free mechanochemical activation (TRIPh-m) yield polymers with similar chemical structures but markedly different surface areas. Despite this, both materials exhibit exceptional iodine uptake from hexane solution (up to 1.87 g g^-1), placing them among the highest-performing amorphous microporous organic polymers reported to date. The superior adsorption is attributed to the reversible oxidation of triindole units, forming radical cations that enhance iodine capture through electrostatic interactions. Comparative analysis with a truxene-based

SUBMITTER: Mendez-Gil N 

PROVIDER: S-EPMC12670518 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature