Abstract

Polyamic acid (PAA) solution in N, N-dimethylacetamide was mixed with one hemicyanine dye, DHEASPI-C 1, to prepare the fluorescent polyimide (PI) web by electrospinning process (ESP). Firstly, dark orange-red PAA/DHEASPI-C 1 web consisted of nanofibers about 10–100 nm, could be achieved using ESP at room temperature. Then thermal imidization for 4 h in vacuum oven (200 °C, 133 Pa) led to the cycloimidization of PAA into PI and the orange PI/ DHEASPI-C 1 fluorescent web was successfully obtained. The single-photon emission fluorescent measurements showed that both electrospun PAA/DHEASPI-C 1 web and PI/DHEASPI-C 1 web had obvious fluorescent properties, moreover, their spectra peak locations were 604 nm and 602 nm respectively.

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