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. 2017 Dec 6;3(12):1271–1275. doi: 10.1021/acscentsci.7b00418

Figure 2.

Figure 2

CO2 absorption isotherms varying solvent and denticity. (a) 50 mM GG and 75 mM AA in diglyme and DMSO at 22 °C. (b) 50 mM N,N,N′,N′-tetramethylguanidine and 75 mM n-butanol in DMSO and bis(2-methoxyethyl) ether at 22 °C. (c) An NMR sample of a CO2-saturated mixture of GG:AA, 1:1 ratio, evolves a viscous secondary phase (see Supporting Information section III for further details).