Table 1 Gas uptake properties and elemental (CHNO) analyses of PIM-1 and derivatives

Material	SA_BET [m² g⁻¹]	SA_Langmuir [m2 g⁻¹]	SA_micro [m² g⁻¹]	Micro vol. [cm³ g⁻¹]	Toal Pore vol. [cm³ g⁻¹]	Elemental analysis %exp [Theo.]				CO₂ uptake at 1 bar [mmol g⁻¹]			CO₂ Q_st,max at 0.05 bar [kJ mol⁻¹]	CO₂/N₂ Gas Selectivity [15:85] at 298 K
Material	SA_BET [m² g⁻¹]	SA_Langmuir [m2 g⁻¹]	SA_micro [m² g⁻¹]	Micro vol. [cm³ g⁻¹]	Toal Pore vol. [cm³ g⁻¹]	C	H	N	O	273 K	298 K	323 K	CO₂ Q_st,max at 0.05 bar [kJ mol⁻¹]	CO₂/N₂ Gas Selectivity [15:85] at 298 K
PIM−1	799	939	277	0.25	0.74	74.6 [75.6]	4.3 [4.4]	6.3 [6.1]	13.1 [13.9]	2.40	1.31	0.83	28.9	27
K-PIM-1 (Solvent)	567	668	257	0.20	0.48	73.5 [75.3]	5.0 [5.3]	2.8 [0]	15.5 [19.4]	1.63	0.96	0.57	28.7	42
K-PIM−1	701	822	366	0.24	0.46	73.9 [75.3]	5.2 [5.3]	0.4 [0]	18.1 [19.4]	2.14	1.22	0.64	30.1	47
OH-PIM-1	629	752	329	0.21	0.49	74.1 [75.3]	6.1 [6.5]	0.2 [0]	17.7 [18.2]	1.85	1.02	0.52	27.2	70
MI-PIM−1	776	893	389	0.27	0.54	74.9 [76.1]	5.9 [6.2]	4.9 [5.4]	11.3 [12.3]	2.24	1.28	0.70	26.9	18
HZ-PIM-1	371	421	154	0.12	0.40	75.6 [76.5]	5.6 [5.7]	7.7 [8.3]	9.9 [9.5]	1.00	0.54	0.26	19.5	53
PEI-PIM-1^a	44	60	–	0.01	0.18	67.0	6.9	10.7	10.8	2.34	1.70	1.17	44.5^b	316

^aThe theoretical value for elemental composition of PEI PIM–1 was not calculated owing to the structural complexity of polyethylenimine dendrimers.
^bQ_st,_max under CO₂ loading (mmol g⁻¹) at 0.90 bar.

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