Luminescence Vapochromism of a Cu(I)/Na Phosphane Iodide Assembly Based on a Secondary‐Sphere Sodium Response
Abstract
Photoluminescent compounds showing distinct and selective optical response to external perturbation are essential components for sensing applications. Herein, we present a copper(I) iodide-sodium luminescent complex assembled with a hybrid phosphanephosphinate ligand. The photoemission of the tetrametallic {Cu 2 I 2 Na 2 } aggregate is consistent with the thermally activated delayed fluorescence that originates from the [CuI(phosphane)] motifs but strongly depends on the coordination environment of sodium ions completed by O-donor solvent molecules, Na-π(phenyl) interactions, and/or Na-I bonds. The reversible removal and vaporphase addition of methanol, ethanol, water, and dimethoxyethane as Na-bound ligands alter the solid-state luminescence from blue (461 nm) to yellow (570 nm) with quantum yields reaching 0.73. Importantly, different photoemission responses to methanol (522 nm) and ethanol (492 nm) are complemented by preferred binding of methanol and its detection in up to 1:10 methanol:ethanol mixtures. Variations of luminescence among the studied solvates are attributed to the alterations of secondary sphere interactions involving sodium ions and illustrate a new approach to stimuli-responsive metal complexes constructed from soft-hard donor ligands.
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BibTeX
@article{korhonen2026luminescence,
title = {{Luminescence Vapochromism of a Cu(I)/Na Phosphane Iodide Assembly Based on a Secondary‐Sphere Sodium Response}},
author = {Henna Korhonen and Dorota Głosz and Mariia Beliaeva and Andrey Belyaev and Constance Lecourt and Adrien Schlachter and Karine Costuas and Guillaume Calvez and Robert Podgajny and Christophe Lescop and Igor O Koshevoy},
journal = {Angewandte Chemie International Edition},
year = {2026},
month = sep,
doi = {10.1002/anie.6117838},
url = {https://hal.science/hal-05774036v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Luminescence Vapochromism of a Cu(I)/Na Phosphane Iodide Assembly Based on a Secondary‐Sphere Sodium Response
AU - Henna Korhonen
AU - Dorota Głosz
AU - Mariia Beliaeva
AU - Andrey Belyaev
AU - Constance Lecourt
AU - Adrien Schlachter
AU - Karine Costuas
AU - Guillaume Calvez
AU - Robert Podgajny
AU - Christophe Lescop
AU - Igor O Koshevoy
PY - 2026
DA - 2026/09/15
JO - Angewandte Chemie International Edition
DO - 10.1002/anie.6117838
UR - https://hal.science/hal-05774036v1
AB - Photoluminescent compounds showing distinct and selective optical response to external perturbation are essential components for sensing applications. Herein, we present a copper(I) iodide-sodium luminescent complex assembled with a hybrid phosphanephosphinate ligand. The photoemission of the tetrametallic {Cu 2 I 2 Na 2 } aggregate is consistent with the thermally activated delayed fluorescence that originates from the [CuI(phosphane)] motifs but strongly depends on the coordination environment of sodium ions completed by O-donor solvent molecules, Na-π(phenyl) interactions, and/or Na-I bonds. The reversible removal and vaporphase addition of methanol, ethanol, water, and dimethoxyethane as Na-bound ligands alter the solid-state luminescence from blue (461 nm) to yellow (570 nm) with quantum yields reaching 0.73. Importantly, different photoemission responses to methanol (522 nm) and ethanol (492 nm) are complemented by preferred binding of methanol and its detection in up to 1:10 methanol:ethanol mixtures. Variations of luminescence among the studied solvates are attributed to the alterations of secondary sphere interactions involving sodium ions and illustrate a new approach to stimuli-responsive metal complexes constructed from soft-hard donor ligands.
SN - 1433-7851
SN - 1521-3773
ER -