Coexisting gases regulate the rates of water adsorption by a flexible one-dimensional coordination polymer
AnQi Wang1, Xin Zheng1,2, Yuki Saito1,2
1Graduate School of Environmental Science, Hokkaido University Sapporo 060-0810 Japan noro@ees.hokudai.ac.jp.
Abstract:
A novel flexible one-dimensional coordination polymer [Cu2(3-OH-bza)3(AcO)(pyr)] (1, 3-OH-bza = 3-hydroxybenzoate, AcO = acetate, pyr = pyrimidine) was found to adsorb water at rates that are influenced by the nature of coexisting gases. Upon exposure to a flow of water vapor containing gas, 1 displays a H2O adsorption rate that is decelerated to a greater extent by CO2 than by N2. Key to this phenomenon is the observation that 1 undergoes a structural change upon reversible and selective adsorption of H2O. This finding serves as the basis of a new strategy for designing porous materials for highly efficient separation and storage applications.
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