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Article Abstract
A 3D Co(III)-complex hybrid polyoxoniobate framework Na(HO)[Co(phen)(4,4'-bipy)(NbO)]·19HO () has been constructed from [Co(phen)(4,4'-bipy)(NbO)] dimer units and 2D inorganic Na-O cluster layers. The Co(III) centers are coordinated with {NbO}, 4,4'-bipy and phen simultaneously. The [Co(phen)(4,4'-bipy)(NbO)] fragments link the Na-O cluster layers to generate a 3D metal complex-modified hybrid polyoxoniobate framework with π-π interactions between phenanthroline rings. Compound shows reversible thermochromic behavior resulting from electron transfer from {NbO} to 4,4'-bipy and subsequent formation of radical products, which is first observed in polyoxoniobates. Furthermore, the compound exhibits stable nonvolatile storage behavior and rewritable resistive switching with a low switching voltage (1.12 V) and high current on/off ratio (1.18 × 10) along with stable cyclic performance during stability test for 200 cycles. Charge-transfer mechanism has been studied by analyzing the relationship between current and voltage in the process of resistance switching.
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| http://dx.doi.org/10.1021/acs.inorgchem.3c01128 | DOI Listing |
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