A fully conjugated organic polymer via Knoevenagel condensation for fast separation of uranium

Design and preparation of a kind of pore-free adsorbent with abundant active sites is favorable for fast separation of uranium. Here, a two-dimensional olefin-linked conjugated organic polymer was prepared via the Knoevenagel condensation reaction. The product owns good stability and excellent fluorescence property due to the fully conjugated skeleton. Moreover, owning to the high content of N atom, it shows excellent performance in adsorption and separation of uranium, and more importantly, it is constructed with nearly pore-free structure because of the irregular staggered stacking, which makes it exhibit fast adsorption behavior towards uranium. These results confirm the feasibility of pore-free material for fast adsorption.