title: Double-step CO2 sorption and guest-induced single-crystal-to-single-crystal transformation in a flexible porous framework.
abstract: A new 2D highly flexible and breathing porous framework [CuL(Me2NH)]·DMF·H2O () (H3L = 5-(4'-carboxylphenoxy)nicotinic acid) has been synthesized using a tritopic linker with a flexible joint. The desolvated framework, [CuL(Me2NH)] (), undergoes structural contraction, and exhibits selective and double-step hysteretic adsorption for CO2. Furthermore, on exposure to CH2Cl2 at room temperature, a unique single-crystal-to-single-crystal transformation occurred between and [Cu2L2(Me2NH)2(H2O)2]·5H2O ().
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China. wyaoyu@nwu.edu.cn.
authors.forename: Wei-Ping
authors.initials: WP
authors.lastname: Wu
authors.forename: Zhi-Sen
authors.initials: ZS
authors.lastname: Li
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
authors.forename: Zheng-Ping
authors.initials: ZP
authors.lastname: Xi
authors.forename: Yao-Yu
authors.initials: YY
authors.lastname: Wang