In:
Angewandte Chemie, Wiley, Vol. 134, No. 19 ( 2022-05-02)
Kurzfassung:
The intrinsic hydrophobicity and limited light absorption especially in the near‐infrared (NIR) region of porous organic polymers are two bottlenecks impeding their applications in solar steam generation (SSG). Herein, we develop a 1,4,5,8‐tetrakis(phenylamino)anthracene‐9,10‐dione (TPAD)‐based covalent organic framework (COF) (TPAD‐COF) featuring both superhydrophilicity and broad light absorption covering from the entire UV/Vis to NIR regions for SSG. TPAD‐COF serving as a highly efficient photothermal conversion material without any additives displays an excellent water evaporation of 1.42 kg m −2 h −1 and achieves a high energy conversion efficiency of 94 % under 1 sun irradiation. Further extension of the light absorption range of the TPAD‐based COF is realized through post‐synthetic modification by chelating BF 2 moieties. Systematic control experiments and analysis confirm that the hydrophilicity of photothermal conversion materials plays a more dominant role in the current TPAD‐based COFs for SSG.
Materialart:
Online-Ressource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v134.19
DOI:
10.1002/ange.202201900
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2022
ZDB Id:
505868-5
ZDB Id:
506609-8
ZDB Id:
514305-6
ZDB Id:
505872-7
ZDB Id:
1479266-7
ZDB Id:
505867-3
ZDB Id:
506259-7
