AI Article Synopsis
- Two unique boron imidazolate frameworks (BIF-134 and BIF-135) were created using a dual-ligand approach under solvothermal conditions.
- BIF-134 has both structural and guest boron imidazolate ligands, enhancing its stability through interactions and maintaining pore space, while BIF-135 only has structural ligands.
- Both frameworks demonstrated impressive stability in various environments and exhibited potential for optical applications, highlighted by their third-order nonlinear optical properties.
Article Abstract
Two unusual nanotube-based boron imidazolate frameworks (BIF-134 and BIF-135) were synthesized by a dual-ligand synthetic strategy under solvothermal conditions. In the structure of BIF-134 ([Co(BH(2-mim))(BTC)](HBH(2-mim))(NMA); 2-mim = 2-methylimidazole, NMA = -methylacetamide, and BTC = 1,3,5-benzene tricarboxylate), one part of boron imidazolate ligands participate in the structural skeleton coordination, while another part of boron imidazolate ligands act as guest molecules that are located between adjacent nanotubes, which enhance the stability of the framework by the host-guest interaction and the pore space partition effects. It was found to be highly stable in air, water, organic solvents, and a wide pH range (pH 0-12). However, in the structure of BIF-135 ([Zn(BH(2-mim))(CHTC)]; CHTC = 1,3,5-cyclohexanetricarboxylate), all boron imidazolate ligands participate in the structural skeleton coordination; there is no boron imidazolate guest molecule in the pores. The topology of BIF-135 is similar to that of BIF-134 by replacing BTC with CHTC and replacing Co with Zn. Furthermore, the obtained BIFs exhibited third-order nonlinear optical properties and potential optical limiting applications demonstrated by reverse saturable absorption.
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| http://dx.doi.org/10.1021/acs.inorgchem.2c03962 | DOI Listing |
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