Porphyrin-based donor–acceptor COFs as efficient and reusable photocatalysts for PET-RAFT polymerization under broad spectrum excitation

Abstract

Porphyrin-based donor–acceptor COFs are effective heterogeneous photocatalysts for photoinduced electron transfer-reversible addition–fragmentation chain transfer (PET-RAFT), including for aqueous polymerizations and under red-light excitation.

Functional Porous Ionic Polymers as Efficient Heterogeneous Catalysts for the Chemical Fixation of CO2 under Mild Conditions

“…Recently, various novel porous materials, including metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and porous organic polymers (POPs) have been developed and show fruitful applications, including catalysis, sensor, gas capture and separation, due to their unique porosity structure and the tunability of the chemical structure [31][32][33][34][35]. Among them, porous organic polymers (POPs), which always have special hierarchical porosity, high stability, and a relatively high surface area, are good candidates for heterogeneous catalysis [36][37][38][39][40][41].…”

Modulating electronic structure of triazine-based covalent organic frameworks for photocatalytic organic transformations

“…[32][33][34] In particular, 2D COFs have great advantages in heterogeneous catalysis, including: (i) the band gap and visible light absorption ability of 2D COFs can be easily adjusted by changing the building block; 35 (ii) the ordered p-conjugated structure and p-p stacking in inter-layers are in favour of delocalization of electrons; 36,37 (iii) 2D COFs offer a unique 1D nanopore channel, and the charges can transfer to the surface of the catalyst through this channel; 38 (iv) beneting from the introduction of donor (D) and acceptor (A) components in 2D COFs, the constructed COFs possess effective separation of electron-hole pairs. [39][40][41] Therefore, 2D COFs can be promising candidates in visible lightinduced organic transformation. For example, Liu group reported a 2D imine-based COFs for photocatalytic organic transformations under visible-light in 2017.…”

Control of Photoinduced Electron Transfer Using Complex Formation of Water-Soluble Porphyrin and Polyvinylpyrrolidone

“…Extensive effort has been devoted to mimicking the natural photosynthetic systems to study the initial process of photosynthesis and to realize highly efficient electron transfer in artificial photosynthetic systems [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Numerous studies of electron transfer systems using covalently linked electron donor and acceptor molecules have been reported [ 10 , 11 , 12 , 13 ].…”

“…Numerous studies of electron transfer systems using covalently linked electron donor and acceptor molecules have been reported [ 10 , 11 , 12 , 13 ]. Recent covalently linked donor-acceptor systems are reported and used as polymerization photoinitiators [ 14 , 15 ]. Systems with noncovalently assembled electron donor and acceptor molecules have also been constructed via hydrogen bonding [ 16 , 17 , 18 ], metal coordination [ 18 , 19 , 20 ], electrostatic interaction [ 21 , 22 , 23 ], and host–guest interaction [ 24 , 25 , 26 , 27 ].…”