Australian Centre for NanoMedicine, Centre for Advanced Macromolecular Design, School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia.
Electron Microscopy Unit, Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, New South Wales, 2052, Australia.
Angew Chem Int Ed Engl. 2021 Oct 11;60(42):22664-22671. doi: 10.1002/anie.202107457. Epub 2021 Sep 14.
Ultrathin porphyrinic 2D MOFs, ZnTCPP nanosheets (TCPP: 5,10,15,20-(tetra-4-carboxyphenyl) porphyrin) were employed as heterogeneous photocatalysts to activate PET-RAFT polymerization under various wavelengths ranging from violet to orange light. High polymerization rates, oxygen tolerance, and precise temporal control were achieved. The polymers showed narrow molecular weight distributions and good chain-end fidelity. The 2D ZnTCPP nanosheets were applied as photocatalysts in stereolithographic 3D printing in an open-air environment under blue light to yield well-defined 3D printed objects. Apart from providing an efficient catalytic system, 2D ZnTCPP nanosheets reinforced the mechanical properties of the 3D printed materials. The presence of ZnTCPP embedded in the materials conferred effective antimicrobial activity under visible light by production of singlet oxygen, affording 98 % and 93 % anti-bacterial efficiency against Gram-positive and Gram-negative bacteria, respectively.
超薄的卟啉二维 MOFs，ZnTCPP 纳米片（TCPP：5,10,15,20-（四-4-羧基苯基）卟啉）被用作非均相光催化剂，在从紫光到橙光的各种波长下激活 PET-RAFT 聚合。实现了高聚合速率、耐氧性和精确的时间控制。聚合物表现出较窄的分子量分布和良好的链端保真度。二维 ZnTCPP 纳米片在开放环境下的蓝光下用作立体光刻 3D 打印中的光催化剂，以生成定义良好的 3D 打印物体。除了提供高效的催化体系外，二维 ZnTCPP 纳米片还增强了 3D 打印材料的机械性能。嵌入材料中的 ZnTCPP 通过产生单线态氧赋予了可见光下的有效抗菌活性，对革兰氏阳性菌和革兰氏阴性菌的抗菌效率分别达到 98%和 93%。
