Synthesis of graphene quantum dots for their supramolecular polymorphic architectures
Synthesis of graphene quantum dots for their supramolecular polymorphic architectures
复制标题
超分子多态结构石墨烯量子点的合成
DOI：
10.1007/s12274-020-3236-4
复制
发表时间：
2020-12-01
期刊：
影响因子：
9.9
通讯作者：
Dai, Zhongxu
中科院分区：
文献类型：
--
作者：
Chen, Weifeng;Lv, Guo;Dai, Zhongxu
如何调控石墨烯量子点(GQD)组装过程中的超分子结构仍然是一个亟待克服的挑战。本文以新型前驱体间三酚为原料，采用绿色法制备了高质量的1-3层GQD。更重要的是，我们展示了一种设计GQD超分子结构的策略，并首次构建了GQD的新型超分子形态。此外，通过调节制备条件可以很好地控制GQD的超分子形态，并用扩散限制聚集(DLA)模型解释了枝状超分子结构的形成机理。本工作不仅为GQD的合成开辟了一条新的前驱体，而且开辟了一条形成多晶型超分子的有效途径，极大地促进了GQD的潜在应用。
How to regulate the supramolecular structures in the assembly of graphene quantum dots (GQDs) is still a great challenge to be overcome. Herein, the GQDs of 1-3 layers with high quality are synthesized from the new precursor m-trihydroxybenzene in a green method. More importantly, a strategy for designing the supramolecular structures of GQDs is demonstrated, and the novel supramolecular morphologies of GQDs have been constructed for the first time. Moreover, the supramolecular morphologies of GQDs can be well controlled by regulating the preparation conditions, and the formation mechanism of the branch-like supramolecular structure has been explained by the the diffusion-limited aggregation (DLA) model. This work not only develops a new precoursor to synthesize GQDs, but also opens up an effective route to form the polymorphic supermolecules, thus greatly facilitating their potential applications.