Synthesis of conjugated copolymers containing NBF2O units and their application for photocatalytic hydrogen evolution

被引：0
作者：
Huang, Ying [1 ]
Li, Shuanglong [1 ]
Huo, Hongbin [2 ]
Yang, Dong [1 ]
机构：
[1] Xian Polytech Univ, Sch Mat Sci & Engn, Xian Key Lab Text Composites, Xian 710048, Shaanxi, Peoples R China
[2] Liaoning Petrochem Univ, Sch Petrochem Engn, Jinzhou City 113001, Liaoning, Peoples R China
来源：
EUROPEAN POLYMER JOURNAL | 2025年 / 227卷
基金：
中国国家自然科学基金;
关键词：
Conjugated copolymers; OBF2N structure; Photocatalytic H2 evolution; OPTICAL-PROPERTIES; ELECTRON-AFFINITY; N UNIT; POLYMERS; SUBSTITUENTS; EMISSION;
D O I：
10.1016/j.eurpolymj.2025.113764
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Donor/acceptor (D-A) conjugated copolymers, due to their superior optoelectronic properties, have attracted significant attention. In this study, we employed the amino-yne click reaction and BF2-complexation to synthesize the D-A conjugated copolymers. The electron-accepting OBF2N moieties and different types of electrodonating units, such as phenyl alkoxy (OTP), triphenylamine (TPA) and fluorene (FL), were combined to synthesize the conjugated copolymers OTP-BF2-FL and TPA-BF2-FL. The resulting conjugated copolymers showed significant red-shifted absorption and emission bands through BF2 coordination due to the intramolecular charge transfer (ICT) character. Moreover, the planar OTP unit was more conducive for the expansion of conjugated systems, thereby enabling longer absorption/emission wavelengths (lambda abs = 500 nm and lambda em = 627 nm in THF) to OTP-BF2-FL. Although the highly twisted structure of TPA group was detrimental towards the expansion of pi-conjugation, it could effectively improve the luminescence efficiency of TPA-BF2-FL in both the solution and solid states (Phi F = 24.5 % in toluene, Phi F = 12.1 % in solid). Finally, we demonstrated the application of OTP-BF2- FL and TPA-BF2-FL in photocatalytic hydrogen evolution. Photocatalytic H2 evolution experiment results revealed that the photocatalytic H2 evolution rate (HER) of OTP-BF2-FL and TPA-BF2-FL were 85 mu mol g- 1h- 1 and 237 mu mol g- 1h- 1, respectively.
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页数：10
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