Elucidating heterogeneous photocatalytic superiority of microporous porphyrin organic cage.
Chao LiuKunhui LiuChiming WangHeyuan LiuHailong WangHongmei SuXiyou LiBanglin ChenJianzhuang JiangPublished in: Nature communications (2020)
The investigation on the catalytic properties of porous organic cages is still in an initial stage. Herein, the reaction of cyclohexanediamine with 5,15-di[3',5'-diformyl(1,1'-biphenyl)]porphyrin affords a porphyrin tubular organic cage, PTC-1(2H). Transient absorption spectroscopy in solution reveals much prolonged triplet lifetime of PTC-1(2H) relative to monomer reference, illustrating the unique photophysical behavior of cagelike photosensitizer. The long triplet lifetime ensures high-efficiency singlet oxygen evolution according to homogeneous photo-bleach experiment, electron spin-resonance spectroscopy, and aerobic photo-oxidation of benzylamine. Furthermore, microporous supramolecular framework of PTC-1(2H) is able to promote the heterogeneous photo-oxidation of various primary amines with conversion efficiency above 99% under visible light irradiation. These results indicate the great application potentials of porous organic cages in heterogeneous phase.
Keyphrases
- energy transfer
- electron transfer
- visible light
- photodynamic therapy
- metal organic framework
- water soluble
- high efficiency
- single molecule
- quantum dots
- high resolution
- highly efficient
- hydrogen peroxide
- mass spectrometry
- nitric oxide
- radiation therapy
- molecular dynamics
- density functional theory
- liquid chromatography
- reduced graphene oxide
- pseudomonas aeruginosa
- endothelial cells
- candida albicans
- electron microscopy