Fabracation And Properties Of Self-Assembly Systems Contain Perylene Derivatives

This thesis presents the studies on synthesis and characterization of novel self-assembly systems based on functional organic molecules, as well as the dual fluorescent molecular switch and logic gate. The main conclusions are as follows:Two novel self-assembly systems based on linear perylene derivative were prepared through hydrogen bond and metal coordination interactions. Firstly, we synthesized BDAP (bearing perylene diimide unit and diacylaminopyridine unit), which can form well-defined 1D long fibers aggregate state structure by virtue of the combination of π-π stacking and hydrogen bond induced self-assembly. In addition, we synthesized DP and DPD (bearing perylene diimide and β-diketone groups) and their corresponding copper (II) complexes, which can form isolated and consecutive nano-particles, respectively.We designed a particularly simple dual-mode fluorescent molecular switch, which could undergo reversible conformation transformation in response to external inputs such as protons and metal ions, each state corresponding to a specific fluorescent emission peak. The molecular switch 2,6-di(pyrenemethylamine-methyl)-pyridine [PPP] exhibits distinctconformation and fluorescence under different inputs. Remarkably, when formed a film on the quartz slide, the acid induced fluorescent switch acts reversibly as an on-off switch distinct to the on-on' switch in solution. Based on the reversible changes of the fluorescence emission of the switch responding to different external stimulus, the corresponding integrated logic gates and communication networks have been constructed in solid film or in solution.The benzperylenebisimides carrying carbazolyl peripheral groups were synthesized through a facile way, which exhibited intense aggregation in nanoaggregation and solid states.