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Subcomponent self-assembly of a Fe(II) based mononuclear complex for potential NH3 sensing applications

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Abstract

Metal oxide and conducting polymer solid state sensors have occupied a substantial portion of NH3 gas sensor applications. Here, we present a new mononuclear Fe(II) complex with formula [FeL2](BF4)2 (L = (E)-2-((pyridin-2-ylmethylene)amino)-1H-benzo[de]isoquinoline-1,3(2H)-dione) (1) for potential NH3 sensing applications. Complex 1 was synthesized via subcomponent self-assembly. Clear color differentiation from pink to black can be observed by the naked eye at ambient conditions after adsorbing NH3 gas. 57Fe Mössbauer spectroscopy was employed to study the driving spin state change of the material 1@NH3, paving the way to the design of a new generation of sensors based on coordination complexes.

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Acknowledgements

This work was supported through the Fonds De La Recherche Scientifique—FNRS (CDR 33694457, PDR T.0095.21). W. Li and L. Sun were supported by fellowship from the China Scholarship Council (201908310083 and 201804910584). GFSM is gratefully acknowledged for granting the participation of W. L. and L. S. to ICAME 2021 (Brasov, Romania).

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  1. Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis (IMCN), Université catholique de Louvain, Place L. Pasteur 1, 1348, Louvain-la-Neuve, Belgium

    Weiyang Li, Li Sun & Yann Garcia

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  1. Weiyang Li
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  2. Li Sun
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  3. Yann Garcia
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Correspondence to Yann Garcia.

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This article is part of the Topical Collection on Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2021), 5-10 September 2021, Brasov, Romania

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Li, W., Sun, L. & Garcia, Y. Subcomponent self-assembly of a Fe(II) based mononuclear complex for potential NH3 sensing applications. Hyperfine Interact 242, 7 (2021). https://doi.org/10.1007/s10751-021-01734-6

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