Arylene Ethynylene-Functionalized Bithiazole-Based Zinc Polymers for Ultraefficient Photocatalytic Activity

Abstract

Polymers 4 containing poly(arylene ethynylene) were synthesized and characterized systematically. Among them, 4c exhibited a remarkable H2 evolution rate (14.32 mmol h–1 g–1) with visible-light irradiation, lasting 72 h in different water qualities; the corresponding apparent quantum yield was 11.6% at 450 nm.

Electronic Properties and Photocatalytic Hydrogen Evolution Rates for Alternating Conjugated Copolymers: Predictions and Insights by Data-Driven Models

“…It has been proposed in earlier studies that strong charge transfer is conducive to highperformance hydrogen production [34][35][36]. This, however, is not in line with the results of many more recent studies, where co-polymer with strong charge transfer (such as thiadiazolembedded materials) cannot achieve high-performance (HER > 1,000 μmol/hg).…”

Hydrogen Evolution Prediction for Alternating Conjugated Copolymers Enabled by Machine Learning with Multidimension Fragmentation Descriptors

“…It has been proposed in earlier studies that strong charge transfer (CT) is conducive to high-performance hydrogen production. − This, however, is not in line with the results of many more recent studies, wherein the copolymer with strong CT (such as thiadiazol-embedded materials) cannot achieve high-performance (HER >1000 μmol/hg). − Instead, several high-performance materials (such as fluorobenzene-containing copolymers) only contain weak acceptor fragments . To solve the contradictions, it is highly meaningful to develop new models and rationalize these phenomena in a more comprehensive manner.…”

Enhanced Visible-Light Photoelectrocatalytic Activity over a Polydiacetylene-Based Metal Complex with RGO Modified under Wastewater

“…The above-mentioned research work has been extensively devoted to investigate the effects of the polymerization degree/size of PDA on the performance of different semiconductors in either photovoltaic or photoelectrocatalytic applications. , However, it remains unclear whether the polymerization degree/size is beneficial or detrimental to the performance of the same semiconductor in photoelectric transfer and in photoelectrocatalysis. , A range of long chain-like PDA-based coordination complexes were prepared via self-assembly and electrophoretic deposition (EPD) (Scheme ). − Thus, this study aims to characterize the corresponding polymers as photoanodes for effective hydrogen generation through the PEC process, along with the investigation of its mechanism. The broad-wavelength CPs, which have proper energy levels and high efficiency charge-transfer properties, are in demand. , Plenty of building blocks are used for constructing CPs for the purpose of realizing the above-mentioned desirable characteristics simultaneously. , Not only that, PDA is also extraordinarily attractive owing to its conjugating plane structure, benefiting for charge separation and transport when incorporated into PDA. , Besides, bithiazole (BTz)-bridged CPs, containing a benzothiadiazole moiety, are witnessing a large number of usages, particularly photocatalytic H 2 production. , Thus, we introduced CPs into BTz, and the corresponding CPs were systematically displayed (Scheme ).…”