Block copolymers can be easily controlled to fabricate 1/2D nano-/micro- supramolecular morphology as building blocks, and the formed nano-/micro- architectures are readily to functionalized by introducing functional blocks. We combine conjugated fluorescent block poly (phenylene vinylene) (PPV) and poly (2-vinyl pyridine) (P2VP) to build diblock copolymers PPV7-b-P2VPn with strong fluorescence and self-assembly properties. Regular and homogeneous supramolecular 2-D fluorescent rhombus micelles were obtained by dissolving-cooling-aging process. The scales of the achieved 2-D rhombus micelles were significantly dependent on the concentrations of the growing solutions and the block ratios of the copolymers. Furthermore, it was found that the assembling process of two-dimensional micelles in solution was closely related to the temperature and aging time. Different from the CDSA approaches, the forming rhombus 2-D assembly structures showed extremely low crystalline properties. And indicated by GIWAXS measurement, the formation of rhombus micelles had an important bearing on the intermolecular π-π interaction and the packing angle with each other.

Growth and control of 2D rhombus supramolecular structures of fluorescent block copolymers

2019 Fall National Meeting

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