Generation of 2D organic microsheets from protonated melamine derivatives: suppression of the self assembly of a particular dimension by introduction of alkyl chains
Generation of 2D organic microsheets from protonated melamine derivatives: suppression of the self assembly of a particular dimension by introduction of alkyl chains
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DOI：
10.1039/c2sc20871g
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发表时间：
2012-10
期刊：
影响因子：
8.4
通讯作者：
Junping Xu;Guanglu Wu;Zhiqiang Wang;Xi Zhang
中科院分区：
文献类型：
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作者：
Junping Xu;Guanglu Wu;Zhiqiang Wang;Xi Zhang
二烷基三聚氰胺衍生物与卤素酸在有机溶剂中通过反离子桥接多个氢键、静电相互作用和π -π堆叠自组装成二维有机微片。烷基链的引入抑制了特定尺寸的生长，为二维结构的制造提供了一种通用的方法。质子化被证明是二维组装形成的关键因素。微片的组装和拆卸可以通过交替添加酸和碱来可逆地控制。甚至矩形微片的长宽比也可以通过添加不同量的酸来进一步调节。
Dialkylated melamine derivatives self-assemble with halogen acids into 2D organic microsheets in organic solvent through counterion bridged multiple hydrogen bonds as well as electrostatic interactions and π–π stacking. Alkyl chains are introduced to suppress the growth in a particular dimension, supplying a general approach for the fabrication of 2D structures. Protonation is demonstrated to be a crucial factor in the formation of 2D assemblies. The assembly and disassembly of microsheets can be reversibly controlled by alternating addition of acid and base. Even the aspect ratio of the rectangular microsheets can be further modulated through the addition of different amounts of acid.