高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (3): 456-464.doi: 10.7503/cjcu20190647

• 庆祝《高等学校化学学报》复刊40周年专栏 • 上一篇    下一篇

新型亲水性共轭聚合物的制备及光催化制氢性能

罗威,梁佑才,胡志诚,唐浩然,刘孝诚,邢晔彤,黄飞   

  1. 华南理工大学发光材料与国家重点实验室, 广州 510640
  • 收稿日期:2019-12-10 出版日期:2020-03-10 发布日期:2020-02-07
  • 通讯作者: 黄飞
  • 作者简介:黄 飞, 男, 博士, 教授, 主要从事有机光电功能材料方面的研究. E-mail: msfhuang@scut.edu.cn
  • 基金资助:
    国家自然科学基金(No.21634004);广东省基础与应用基础研究重大项目资助(No.2019B030302007)

Preparation of Novel Hydrophilic Conjugated Polymers and Their Applicationin Photocatalytic Hydrogen Evolution

LUO Wei,LIANG Youcai,HU Zhicheng,TANG Haoran,LIU Xiaocheng,XING Yetong,HUANG Fei   

  1. State Key Laboratory of Luminescent Materials, South China University of Technology, Guangzhou 510640, China
  • Received:2019-12-10 Online:2020-03-10 Published:2020-02-07
  • Contact: Fei HUANG
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21634004);the Basic and Applied Basic Research Major Program of Guangdong Province, China(No.2019B030302007)

摘要:

制备了聚({4,8-双[(2,5,8,11,14,17,20-七氧二十二烷-22-基)氧基]苯并[1,2-b∶4,5-b']二噻吩}-交替-[2,5-二(噻唑-2-基)吡嗪])(P7O-2N-2N)和聚({4,8-双[(2,5,8,11,14,17,20-七氧二十二烷-22-基)氧基]苯并[1,2-b∶4,5-b']二噻吩}-交替-[3,6-双(5-溴-2-噻吩基)-1,2,4,5-四嗪])(P7O-4N)2个亲水性共轭聚合物, 通过调节主链含氮杂环上氮原子的位置, 系统研究了主链结构对材料吸收光谱、 能级、 氢结合自由能及光催化性能的影响. 研究发现, 与P7O-2N-2N相比, P7O-4N表现出更强的链间聚集、 更低的氢结合自由能及更好的光催化制氢性能.

关键词: 共轭聚合物, 光催化制氢, 含氮杂环, 亲水侧链

Abstract:

The application of organic conjugated polymers in photocatalytic hydrogen production has received increasing attention. However, most conjugated polymer photocatalysts showed unsatisfied photocatalytic hydrogen evolution, and the structure-performance relationship of conjugated polymers-based photocatalysts needs further exploration. In this study, we designed two conjugated polymers[poly({4, 8-bis[(2, 5, 8, 11, 14, 17, 20-heptaoxadocosan-22-yl)oxy]benzo[1, 2-b∶4, 5-b']dithiophene}-alt-[2, 5-di(thiazol-2-yl)pyrazine])(P7O-2N-2N) and poly({4, 8-bis[(2, 5, 8, 11, 14, 17, 20-heptaoxadocosan-22-yl)oxy]benzo[1, 2-b∶4, 5-b']dithiophene}-alt-[3, 6-di(thiophen-2-yl)-1, 2, 4, 5-tetrazine])(P7O-4N)] with hydrophilic side chains and nitrogen-contained heterocycles in backbones. The chemicals tructures and their influence on the absorption spectrum, energy level, free energy of hydrogen adsorption and photocatalytic performance of the material were systematically studied. The results showed that the conjugated polymer P7O-4N having a 3, 6-bis(thien-2-yl)-1, 2, 4, 5-tetrazine structure showed stronger inter-chain aggregation, lower hydrogen bonding free energy, and better photocatalytic hydrogen production performance than polymer P7O-2N-2N with 2, 5-bis(thiazole-2-yl)-pyrazide structure.

Key words: Conjugated polymer, Photocatalytic hydrogen evolution, Nitrogen-containing heterocycle, Hydrophilic side chain

中图分类号: