量子点
纳米晶
氮化碳
纳米材料
材料科学
纳米技术
自组装
氮化物
超晶格
化学
光催化
催化作用
有机化学
光电子学
图层(电子)
作者
Zheng Xing,Kaituo Dong,Nick Pavlopoulos,Yuexing Chen,Lilac Amirav
标识
DOI:10.1002/anie.202107079
摘要
Abstract The study of nanocrystal self‐assembly into superlattices or superstructures is of great significance in nanoscience. Carbon nitride quantum dots (CNQDs), being a promising new group of nanomaterials, however, have hardly been explored in their self‐organizing behavior. Here we report of a unique irradiation‐triggered self‐assembly and recrystallization phenomenon of crystalline CNQDs (c‐CNQDs) terminated by abundant oxygen‐containing groups. Unlike the conventional self‐assembly of nanocrystals into ordered superstructures, the photoinduced self‐assembly of c‐CNQDs resembles a “click reaction” process of macromolecules, in which the activated ‐OH and ‐NH 2 functional groups along the perimeters initiate cross‐linking of adjacent QDs through a photocatalytic effect. Our findings unveil fundamental physiochemical features of CNQDs and open up new possibilities of manipulating carbon nitride nanomaterials via controlled assembly. Prospects for potential applications are discussed as well.
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