1521224-85-0Relevant academic research and scientific papers
Dendritic [2]rotaxanes: Synthesis, characterization, and properties
Liu, Guoxing,Li, Ziyong,Wu, Di,Xue, Wen,Li, Tingting,Liu, Sheng Hua,Yin, Jun
, p. 643 - 652 (2014/04/03)
A series of dendritic ammonium salts have been designed and synthesized. Subsequently, they were used to construct the corresponding [2]rotaxanes by a template-directed clipping approach. Unusually, two unsymmetrical dendritic [2]rotaxanes containing fluorophore (pyrene units) were also obtained; their optical properties, such as UV/vis absorption and fluorescence, were measured. The results indicate that these two rotaxanes possess stronger intermolecular interaction in the solid state than in solution. As a result, solutions of high concentration readily formed the excimer. These special rotaxanes might be applied in dynamic fluorescence-reponsive materials, and the rotaxane structure will also be used as a strategy to adjust the aggregated behaviors of fluorescent molecules.
