Inverse and highly selective separation of CO 2 /C 2 H 2 on a thulium–organic framework

A new Tm-based complex 1 is synthesized and activated at different temperatures to obtain two porous MOFs ( 1a and 1a′ ) with different pore sizes and pore surfaces, in which 1a shows an excellent capability to selectively capture CO 2 from CO 2 /C 2 H 2 .