Effect of the cross-linker length of thiophene units on photocatalytic hydrogen production of triazine-based conjugated microporous polymers

Abstract

Conjugated microporous polymers (CMPs) have been investigated in the field of photocatalytic hydrogen production because of their extended π-conjugation, tunable chemical structure and excellent thermal stability.

Advances in the Chemistry of 2,4,6‐Tri(thiophen‐2‐yl)‐1,3,5‐triazine

“…The effect of cross‐linker on the photocatalytic activity was studied by Han and co‐workers through the synthesis of three CMPs ( PM16.2 , PM16.3 , and PM16.4 , Scheme 16) based on thiophenes and triazine by conventional Stille coupling reactions [132] . The BET surface areas of the three polymers were found to be 138.4, 62.1, 58.8 m 2 g −1 , respectively, and the optical band gaps were found to be 2.06 eV for PM16.2 and 1.90 eV for PM16.3 and PM16.4 , respectively, which could be correlated to the cross‐linker length.…”

Ruthenium nanoparticles on covalent triazine frameworks incorporating thiophene for the electrocatalytic hydrogen evolution reaction

“…39 However, analogous porous organic polymers, which were nonionothermally synthesized, have been published. 45,[71][72][73][74][75] A PhThbased CTF has been obtained through a Brønsted acid route with very low BET surface area. 45 BTh-cross-linked triazine polymers were prepared via electropolymerization and Yamamoto-type Ullmann coupling.…”

“…[72][73][74] A QTh-cross-linked triazine polymer with a low BET surface was synthesized through a Stille coupling reaction. 75…”

Linker length-dependent hydrogen peroxide photosynthesis performance over crystalline covalent organic frameworks

“…18 Conjugated microporous polymers with shorter thiophene or benzene linker lengths introduced the increasing photocatalytic activity for hydrogen production (HER). [19][20][21] The cross-linker length demonstrated a clear influence on the photocatalytic activity for AOR and HER. However, a simple strategy of controlling the linker length to improve H 2 O 2 photosynthesis through 2e − ORR in pure water is scarcely reported.…”