An ‘ice-melting’ kinetic control strategy for highly photocatalytic organic nanocrystals
作者： Yingzhi Chen , Dongjian Jiang , Yujuan Zhang , Shenglian Yao , Federico Rosei
DOI: 10.1039/D0TA09502H
关键词: Organic semiconductor 、 Photocatalysis 、 Amorphous solid 、 Crystallinity 、 Nanostructure 、 Materials science 、 Order of magnitude 、 Orders of magnitude (numbers) 、 Chemical engineering 、 Nanocrystal
摘要: Engineering the size, shape and crystallinity of organic semiconductor nanostructures (OSNs) offers opportunity fine tuning their optoelectronic properties for photocatalytic applications. Here, we report a facile general ‘ice-melting’ kinetic control strategy to synthesize OSNs with excellent performance. The ultraslow release interaction molecules from ice melting yields an ultralow local concentration (∼five orders magnitude fewer molecules), fundamentally enhancing energy barrier thus leading relaxed ordered assembly into refined nanocrystals (∼one order smaller in morphological change amorphous crystalline); such display improved light-harvesting charge transfer consequent efficiency towards degrading pollutants compared standard OSNs, or even commercial titania photocatalysts (Degussa P25); also generalize series highly photoactive nanocrystals.
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