Donor-acceptor carbazole-based conjugated microporous polymers as photocatalysts for visible-light-driven H2 and O2 evolution from water splitting

Donor to Acceptor Charge Transfer in Carbazole‐based Conjugated Microporous Polymers for Enhanced Visible‐Light‐Driven Photocatalytic Water Splitting

“…[35,36] Also, modifying their starting building blocks has been developed for use in wide spectrum of applications, including catalysis, energy storing, sensing, photo luminescence, light-harvesting, dye adsorption, and gas uptake. [37][38][39][40][41][42][43][44][45][46][47][48][49] In addition, owing to the good delocalization of π-electrons and suitable band gap of CMPs, they have been applied as photocatalytic semiconductors for different purposes, for example, amine and sulfide oxidation, hydrogen liberation, oxygen, and indole activation, and cycloaddition. [50][51][52][53][54][55][56] Meanwhile, a donor-acceptor (D-A) copolymer type has emerged as an eminent strategy for achieving excellent photocatalytic hydrogen generation efficiency.…”

“…[21,27,29,[57][58][59][60] According to this protocol, photocatalytic active D-A CMPs have been constructed using electron-deficient units such as triazine, dibenzothiophene-S,S-dioxide (DBTSO), benzothiadiazole (BT), bisulfone, and other heterocycles. [38,[61][62][63][64][65][66][67][68] On the other hand, among the electron-rich building blocks that have been utilized in D-A heterojunction as donors are pyrene (Py), fluorene, aminobenzene, tetraphenylethene (TPE), and fused thiophene. Carbazole building block with a tricyclic robust skeleton, high aromaticity, good thermal and physicochemical stabilities, and excellent photoelectric properties, has a significant interest in the construction of porous organic polymers (POPs).…”

Impact of Interfaces, and Nanostructure on the Performance of Conjugated Polymer Photocatalysts for Hydrogen Production from Water

“…Another example of an efficient donor-acceptor CMP based on carbazole linkers synthesized by Suzuki cross-coupling has been reported. Across a series of four CMPs, a clear trend is observed in which the most polar and therefore most wettable materials display the greatest photocatalytic hydrogen evolution rate (the highest achieving a rate of 15,300 μmol h −1 g −1 , 2:1 H 2 O/MeOH, 0.2 M ascorbic acid adjusted to pH 4, >380 nm cutoff filter, no additional cocatalyst) [ 129 ]. Furthermore, it should also be noted that the most active material was by far the most porous (BET surface area of 1530 m 2 g −1 ) as well as having the most polar constituents, which will likely contribute to the rate superiority.…”

Bifunctional carbon dots as cocatalyst and reactor decorating an organic photocatalyst for H2 production from water-splitting in an emulsion

“…[7][8][9] Compared with inorganic semiconductors, organic semiconductors have wider and stronger absorbance in the range of visible light and the molecular structure, and their photoelectrical properties can be tuned exibly and accurately by the design of the molecular structure. [10][11][12] However, organic semiconductors still suffer from the short life and the low mobility of photogenerated charges. [13][14][15] In addition, due to the hydrophobicity of most organic semiconductors, their photocatalytic performances are limited in water.…”