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Real-Time Visual Monitoring of Kinetically Controlled Self-Assembly.

The construction of artificial structures through hierarchical self-assembly via noncovalent interactions, as well as the monitoring during self-assembly process, play significant roles in dynamic supramolecular chemistry. We managed complex dynamics of newly designed chiral N,N'-diphenyl-dihydrodibenzo[a,c]phenazines derivatives (S)/(R)-DPAC that involved different assemblies with distinct optical and morphological characteristics. With the ratiometric fluorescence originated from the vibration-induced emission (VIE) feature, the self-assembly process from the kinetic traps to the thermodynamic equilibrium state can be real-timely monitored by optical spectrometry effectively. Besides, accompanying with the morphology transformation from particles to nanobricks, the self-assemblies can induce strong circularly polarized luminescence (CPL) with glum = 1.6×10-2. The excited-state characteristic of the self-assemblies offered significant approaches to investigate the relationship between molecular aggregation and conformational change, allowing effective monitoring of the sophisticated supramolecular self-assembly process.