Bifunctional Sr(II)‐terephthalate compound: gas adsorption and luminescence sensing properties

Abstract

A new thermostable Sr(II) compound, formulated as [Sr-(bdc)(H 2 O)(DMF)] n • x(solvent) (1, H 2 bdc = terephthalic acid, DMF = N,N'-dimethylformamide), has been synthesized from the solvothermal reaction of Sr(NO 3 ) 2 and H 2 bdc. The X-ray structural analysis revealed that compound 1 features a 3D framework based on 1D Sr(II)-carboxylate chains, and the coordinated and free solvent molecules filled in the 1D channels of 1, which can be easily removed from the 3D framework via heat treatment activation. The obtained solvent-free samples 1 a not only shows high adsorption capacities of C 2 H 2 and CO 2 at 298 K, moderate adsorption selectivity for C 2 H 2 /CH 4 , CO 2 /CH 4 , but also can be used as a luminescent probe for the detection of nitroaromatic explosives.

Integrating Self-Partitioned Pore Space and Amine Functionality into an Aromatic-Rich Coordination Framework with Ph Stability for Effective Purification of C2 Hydrocarbons

“…Although C 2 /C 1 adsorption values are lower than several top-performing MOFs such as FeMOF-74 (700, 300, and 20) and FJI-H21 (16.3, 13.8, and 17.1), they still compete with those of some reported framework compounds such as UPC-32 (5.2, 4.3, and 5.8), Zn 2 (TCPP)­(DPB) (7.6, 7.3, and 12.1), UPC-33 (7.78, 4.48, and 4.80), MFM-202a (9.0, 7.3, and 10.2), UPC-101-Al (9.2, 6.8, and 8.9), and ZJNU-63 (13.1, 7.0, and 10.6) . Also, the C 2 H 2 /CO 2 selectivity value is comparable to those of some literature framework compounds such as SNNU-17 (1.2), Sr-bdc (1.77), Ni­(dpip) (2.0), ZJNU-110 (2.3), CAU-10H (2.5), and ZJNU-17 (2.5) . The C 2 H 4 /CO 2 selectivity value is similar to those of some existing compounds such as SNNU-95 (2.4), ZJNU-120­(Sm) (2.4), and JXNU-14 (2.6) .…”

Metal–organic frameworks based on infinite secondary building units: recent progress and future outlooks

“…[58][59][60] usually manifested higher coordination numbers among MOFs than the cognate Ca 2+ . For instance, Wang et al 57 synthesized a 1D Sr-MOF-1 [Sr(BDC)(H 2 O)(DMF)] by the reaction of Sr(NO 3 ) 2 and H 2 BDC in the H 2 O and DMF mixture at 100 C for three days. The obtained Sr-MOF-1 crystallized in a monoclinic system with the P2 1 /c space group, where the Sr 2+ exhibited an 8-coordinated environment with six carboxylate oxygens from four BDC ligands, one DMF molecule oxygen and one water molecule oxygen (Fig.…”

“…Since larger ionic radius, Sr 2+ (ref. 54 and 57) and Ba 2+ (ref. 58–60) usually manifested higher coordination numbers among MOFs than the cognate Ca 2+ .…”

New Energetic Metal‐Organic Framework (E‐MOF) based on a sodium(I)‐containing energetic metal salt incorporating guanidinium ions

“…The properties (decomposition temperature, detonation parameters and so on) of E-MOF materials can be modulated by strategically selecting the ligands, coordination atoms and other cations used in the synthesis of the E-MOFs, [15] therefore, E-MOFs have great potential advantages to generate more stable materials with high detonation properties of applying to the diverse application fields of MOFs that have been explored up to date such as gas storage and separation. [16][17][18][19][20] Therefore, because the energetics of the nitrogen-rich ligand directly affect the energetics of the entire E-MOF, choosing an appropriate nitrogen-rich ligand with highlyefficient detonation properties as the ligand is advantageous for the preparation of highly energetic E-MOFs. Some of the materials of previously reported E-MOFs are presented in Figure 1.…”

“…Energetic MOFs (E‐MOFs) are composed of metal ions and energetic bidentate and/or multidentate ligands. The properties (decomposition temperature, detonation parameters and so on) of E‐MOF materials can be modulated by strategically selecting the ligands, coordination atoms and other cations used in the synthesis of the E‐MOFs, [15] therefore, E‐MOFs have great potential advantages to generate more stable materials with high detonation properties of applying to the diverse application fields of MOFs that have been explored up to date such as gas storage and separation [16–20] …”