2D conjugated microporous polyacetylenes synthesized via halogen-bond-assisted radical solid-phase polymerization for high-performance metal-ion absorbents.

For the mixed ion system (Table 2 , entry 4 and Table 3 , entry 2), PPDA-CMP-1 did not adsorb Rb + but maintained perfect selectivity in the Li + adsorption in all the three cycles, although a decreasing trend was observed in the Li + adsorption capacity (from 30.6 wt% to 24.0 wt% and 18.8 wt% Li + adsorption from the first to second and third cycles).

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