TY - JOUR

T1 - Green Emissive Copper(I) Coordination Polymer Supported by the Diethylpyridylphosphine Ligand as a Luminescent Sensor for Overheating Processes

AU - Enikeeva, Kamila

AU - Shamsieva, A. V.

AU - Strelnik, Anna

AU - Fayzullin, Robert

AU - Zakharychev, Dmitry

AU - Kolesnikov , Ilya E.

AU - Dayanova, Irina R.

AU - Gerasimova, Tatiana P.

AU - Strelnik, Igor D.

AU - Musina, Elvira I.

AU - Karasik, Andrey A.

AU - Sinyashin, Oleg G.

N1 - Enikeeva, K.R.; Shamsieva, A.V.; Strelnik, A.G.; Fayzullin, R.R.; Zakharychev, D.V.; Kolesnikov, I.E.; Dayanova, I.R.; Gerasimova, T.P.; Strelnik, I.D.; Musina, E.I.; et al. Green Emissive Copper(I) Coordination Polymer Supported by the Diethylpyridylphosphine Ligand as a Luminescent Sensor for Overheating Processes. Molecules 2023, 28, 706. https://doi.org/10.3390/molecules28020706

PY - 2023

Y1 - 2023

N2 - Tertiary diethylpyridylphosphine was synthesized by the reaction of pyridylphosphine with bromoethane in a suberbasic medium. The reaction of phosphine with the copper(I) iodide led to the formation of a copper(I) coordination polymer, which, according to the X-ray diffraction data, has an intermediate structure with a copper-halide core between the octahedral and stairstep geometries of the Cu4I4 clusters. The obtained coordination polymer exhibits a green emission in the solid state, which is caused by the 3(M+X)LCT transitions. The heating up of the copper(I) coordination polymer to 138.5 °C results in its monomerization and the formation of a new solid-state phase. The new phase exhibits a red emission, with the emission band maximum at 725 nm. According to the experimental data and quantum chemical computations, it was concluded that depolymerization probably leads to a complex that is formed with the octahedral structure of the copper-halide core. The resulting solid-state phase can be backward-converted to the polymer phase via recrystallization from the acetone or DMF. Therefore, the obtained coordination polymer can be considered a sensor or detector for the overheating of processes that should be maintained at temperatures below 138 °C (e.g., engines, boiling liquids, solar heat systems, etc.).

AB - Tertiary diethylpyridylphosphine was synthesized by the reaction of pyridylphosphine with bromoethane in a suberbasic medium. The reaction of phosphine with the copper(I) iodide led to the formation of a copper(I) coordination polymer, which, according to the X-ray diffraction data, has an intermediate structure with a copper-halide core between the octahedral and stairstep geometries of the Cu4I4 clusters. The obtained coordination polymer exhibits a green emission in the solid state, which is caused by the 3(M+X)LCT transitions. The heating up of the copper(I) coordination polymer to 138.5 °C results in its monomerization and the formation of a new solid-state phase. The new phase exhibits a red emission, with the emission band maximum at 725 nm. According to the experimental data and quantum chemical computations, it was concluded that depolymerization probably leads to a complex that is formed with the octahedral structure of the copper-halide core. The resulting solid-state phase can be backward-converted to the polymer phase via recrystallization from the acetone or DMF. Therefore, the obtained coordination polymer can be considered a sensor or detector for the overheating of processes that should be maintained at temperatures below 138 °C (e.g., engines, boiling liquids, solar heat systems, etc.).

KW - Cu4I4 clusters

KW - P,N-ligands

KW - COPPER(I) COMPLEXES

KW - phosphines

KW - luminescent complexes

UR - https://www.mdpi.com/1420-3049/28/2/706

M3 - Article

VL - 28

JO - Molecules

JF - Molecules

SN - 1420-3049

IS - 2

M1 - 706

ER -