Mechanosynthesis of Metal‐Free Molecular Perovskites

ABSTRACT Metal‐free halide perovskites have recently emerged as promising candidates for optoelectronic applications. However, their synthesis has largely depended on water‐based single‐crystal growth that limits material diversity, scalability, and practical implementation. Here, we present a mechanochemical route to synthesize N,N ‐diazabicyclo[2.2.2]octonium (H‐DABCO)‐based halide perovskites from the (DABCO)(NH 4 )X 3 (X = I, Br) compositions. The structural properties were confirmed by X‐ray diffraction and solid‐state nuclear magnetic resonance spectroscopy. Thin films were prepared from mechanosynthetic powders by spin‐coating and characterized by in‐situ grazing incidence wide‐angle scattering measurements, as well as by UV–vis absorption and steady‐state photoluminescence spectroscopy. This mechanosynthetic strategy provides a scalable, environmentally friendly pathway to broaden the scope of metal‐free perovskites and advance their potential in sustainable optoelectronic technologies.

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Publication Details

Journal
Helvetica Chimica Acta
Published
2026-06-17
DOI
https://doi.org/10.1002/hlca.202500237
Primary Topic
Perovskite Materials and Applications
Type
article
Field-Weighted Citation Impact
0.00

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article

Mechanosynthesis of Metal‐Free Molecular Perovskites

Frank Schreiber, Gianluca Bravetti, Benjamin M. Gallant, Alexander Hinderhofer et al.
Helvetica Chimica Acta
Perovskite Materials and Applications
article

Mechanosynthesis of Metal‐Free Molecular Perovskites

Frank Schreiber, Gianluca Bravetti, Benjamin M. Gallant, Alexander Hinderhofer, Paul Zimmermann, Jovana V. Milić, Mahsa Shahsavan, Mohammad Reza Golobostanfard, Dominik J. Kubicki, Oleg Konovalov, Aki Frankberg
article en

Abstract

ABSTRACT Metal‐free halide perovskites have recently emerged as promising candidates for optoelectronic applications. However, their synthesis has largely depended on water‐based single‐crystal growth that limits material diversity, scalability, and practical implementation. Here, we present a mechanochemical route to synthesize N,N ‐diazabicyclo[2.2.2]octonium (H‐DABCO)‐based halide perovskites from the (DABCO)(NH 4 )X 3 (X = I, Br) compositions. The structural properties were confirmed by X‐ray diffraction and solid‐state nuclear magnetic resonance spectroscopy. Thin films were prepared from mechanosynthetic powders by spin‐coating and characterized by in‐situ grazing incidence wide‐angle scattering measurements, as well as by UV–vis absorption and steady‐state photoluminescence spectroscopy. This mechanosynthetic strategy provides a scalable, environmentally friendly pathway to broaden the scope of metal‐free perovskites and advance their potential in sustainable optoelectronic technologies.

Helvetica Chimica Acta
Birmingham City University (GB), University of Fribourg (CH), University of Turku (FI), European Synchrotron Radiation Facility (FR), University College Birmingham (GB), Institute for Applied Economic Research (DE), Adolphe Merkle Institute (CH), University of Birmingham (GB), University of Tübingen (DE)
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, European Research Council
Responsible consumption and production
Openalex Percentile: Top 11%
Perovskite Materials and Applications
DOIOpen Access PDFOpenAlex
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