“…Notably, these values are comparable to those of reported frameworks. [23][24][25][26][27][29][30][31][32]45] Also, the detection limits of 4-NA are calculated and found to be 7.15 ppm, 1.33 ppm, 1.94 ppm and 4.5 ppm in 1-4, respectively (Figures S46-S49). These values are found to be better (or comparable to) than other reported MOFs (Table S5), specifically, {[Zn 4 (μ 3 -OH) 2 (L)(H 2 O) 2 ] • 2DMF} n (where L = [1,1'; 4',1'']terphenyl-3,5,2',5',3'',5''-hexacarboxylic acid) (4 ppm), [23] and {[Zn 2 (oba) 2 (4-bpdb)] • 2DMF} n (where H 2 oba = 4,4'-oxybisbenzoic acid and 4-bpdb = 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene) (6.9 ppm), [25] {[Cd(5-asba)(bimb)]} n (where, H 2 5-asba = 2-amino-5-sulfobenzoic acid and bimb = 1,4-bis(1H-imidazol-1yl)butane) (0.52 ppm), [31] and [Cd(H 2 BDDA)] n (where, H 4 BDDA = 4,4-([2,2'-bipyridine]-6,6'-diylbis(oxy) diphthalicacid) (0.68 ppm).…”