Multistep microwave-assisted approach for the controlled insertion of Cu(II) into Dion–Jacobson and Ruddlesden–Popper layered perovskites
Abstract
An innovative approach for inserting metal cations into layered perovskite oxides is investigated using a soft-chemistry route that enables controlled incorporation of cations such as Cu2+. Starting from the Ruddlesden–Popper phase H2Bi0.1Sr0.85Ta2O7 and the Dion–Jacobson phase RbLaNb2O7, this work demonstrates hybrid compounds, such as alkylamine-intercalated derivatives, are superior intermediates for Cu2+ insertion under mild conditions compared with pristine or protonated phases. A systematic study of the experimental parameters notably demonstrates that the amount of inserted copper is finely tunable via reaction temperature and/or the nature of the starting hybrid phase. A comprehensive structural investigation combining X-ray diffraction and high-resolution transmission electronic microscopy coupled to electron energy loss spectroscopy demonstrates copper insertion within the interlayer space while revealing that this insertion can induce stacking faults depending on the nature of the layered host phase. Insights into the oxidation state, local environment and Jahn–Teller distortion of the inserted copper are provided by a combination of spectroscopic techniques such as X-ray absorption spectroscopy and electron paramagnetic resonance. Finally, this approach demonstrates that copper insertion can lead to a reduction of the band gap of the material. This strategy overcomes key limitations currently reported in the literature for metal cation insertion into layered perovskite oxides, allowing low temperature, fast and efficient insertion, with fine control of the insertion rate and thus paving the way for the easy, efficient and versatile design of new functional materials.
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BibTeX
@article{chapel2026multistep,
title = {{Multistep microwave-assisted approach for the controlled insertion of Cu(II) into Dion–Jacobson and Ruddlesden–Popper layered perovskites}},
author = {Pacôme Chapel and Yanhui Wang and Cédric Leuvrey and Marc Lenertz and Nathalie Parizel and Anthony Beauvois and Valérie Briois and Dris Ihiawakrim and Julie Poulizac and Virgile Rouchon and Pierre Rabu and Christine Taviot-Guého and Guillaume Rogez},
journal = {Materials Chemistry Frontiers},
year = {2026},
month = jul,
doi = {10.1039/d6qm00623j},
url = {https://hal.science/hal-05750266v2},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Multistep microwave-assisted approach for the controlled insertion of Cu(II) into Dion–Jacobson and Ruddlesden–Popper layered perovskites
AU - Pacôme Chapel
AU - Yanhui Wang
AU - Cédric Leuvrey
AU - Marc Lenertz
AU - Nathalie Parizel
AU - Anthony Beauvois
AU - Valérie Briois
AU - Dris Ihiawakrim
AU - Julie Poulizac
AU - Virgile Rouchon
AU - Pierre Rabu
AU - Christine Taviot-Guého
AU - Guillaume Rogez
PY - 2026
DA - 2026/07/27
JO - Materials Chemistry Frontiers
DO - 10.1039/d6qm00623j
UR - https://hal.science/hal-05750266v2
AB - An innovative approach for inserting metal cations into layered perovskite oxides is investigated using a soft-chemistry route that enables controlled incorporation of cations such as Cu2+. Starting from the Ruddlesden–Popper phase H2Bi0.1Sr0.85Ta2O7 and the Dion–Jacobson phase RbLaNb2O7, this work demonstrates hybrid compounds, such as alkylamine-intercalated derivatives, are superior intermediates for Cu2+ insertion under mild conditions compared with pristine or protonated phases. A systematic study of the experimental parameters notably demonstrates that the amount of inserted copper is finely tunable via reaction temperature and/or the nature of the starting hybrid phase. A comprehensive structural investigation combining X-ray diffraction and high-resolution transmission electronic microscopy coupled to electron energy loss spectroscopy demonstrates copper insertion within the interlayer space while revealing that this insertion can induce stacking faults depending on the nature of the layered host phase. Insights into the oxidation state, local environment and Jahn–Teller distortion of the inserted copper are provided by a combination of spectroscopic techniques such as X-ray absorption spectroscopy and electron paramagnetic resonance. Finally, this approach demonstrates that copper insertion can lead to a reduction of the band gap of the material. This strategy overcomes key limitations currently reported in the literature for metal cation insertion into layered perovskite oxides, allowing low temperature, fast and efficient insertion, with fine control of the insertion rate and thus paving the way for the easy, efficient and versatile design of new functional materials.
SN - 2052-1537
ER -