1. sp² 碳连接的二维聚合物.
- Author
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康佳玲, 王红星, 邱 丰, and 庄小东
- Subjects
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FUEL cell electrodes , *POROUS polymers , *SEPARATION of gases , *OPTOELECTRONIC devices , *METAL-organic frameworks , *PHOTOCATALYSIS , *CARBON foams - Abstract
Two-dimensional porous polymers (2DPPs) have planar architecture along with numerous attributes, including optical anisotropy, high mobility, reversible redox properties, intrinsic porosity, etc. These features render them promising materials for gas storage and separation, as membranes for fuel cells and as thin-film electrodes for batteries and supercapacitors. 2DPPs can be generally classified as 2D metal-organic frameworks, 2D covalent organic frameworks, graphitic carbon nitride, graphdiyne, and sandwich-like porous polymer nanosheets. Among these, the 2DPPs with sp²-hybridized carbon (Csp²) bonding are of great interest. Compared with 2DPPs linked by B―O, C―N, or C=C bonds, Csp²-linked 2D porous polymers have unique optical/electrical properties as well as high chemical-/photo-stability and tunable electrochemical performance due to their fully conjugated feature and tunable bandgap properties. Furthermore, such 2DPPs are one of the best precursors for the fabrication of 2D porous carbons with atomically dispersed transition-metal active sites. In this review, rational synthetic approaches for 2D porous polymers with sp²-C bonding are summarized. Their applications in optoelectronic devices, gas separation, luminescent sensing and imaging, batteries and supercapacitors, and photocatalysis are also discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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