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Lin, Wei-Cheng; Chang, Chih-Li; Shih, Chin-Hsuan; Lin, Wan-Chi; Yu Lai, Ze; Chang, Je-Wei; Ting, Li-Yu; Huang, Tse-Fu; Sun, Yu-En; Huang, Hung-Yi; Lin, Yu-Tung; Liu, Jia-Jen; Wu, Yi-Hsiang; Tseng, Yuan-Ting; Zhuang, Ying-Rang; Li, Bing-Heng; Su, An-Chung; Yu, Chi-Hua; Chen, Chin-Wen; Lin, Kun-Han; Jeng, U-Ser; Chou, Ho-Hsiu
Small (Weinheim an der Bergstrasse, Germany), 10/2023, Volume: 19, Issue: 42Journal Article
Conjugated polymers (CPs) have recently gained increasing attention as photocatalysts for sunlight-driven hydrogen evolution. However, they suffer from insufficient electron output sites and poor solubility in organic solvents, severely limiting their photocatalytic performance and applicability. Herein, solution-processable all-acceptor (A -A )-type CPs based on sulfide-oxidized ladder-type heteroarene are synthesized. A -A -type CPs showed upsurging efficiency improvements by two to three orders of magnitude, compared to their donor-acceptor -type CP counterparts. Furthermore, by seawater splitting, PBDTTTSOS exhibited an apparent quantum yield of 18.9% to 14.8% at 500 to 550 nm. More importantly, PBDTTTSOS achieved an excellent hydrogen evolution rate of 35.7 mmol h g and 150.7 mmol h m in the thin-film state, which is among the highest efficiencies in thin film polymer photocatalysts to date. This work provides a novel strategy for designing polymer photocatalysts with high efficiency and broad applicability.
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