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Post-synthetic halide conversion and selective halogen capture in hybrid perovskites
Reaction with halogen vapor allows us to post-synthetically exchange halides in both three- (3D) and two-dimensional (2D) organic–inorganic metal-halide perovskites. Films of 3D Pb–I perovskites cleanly convert to films of Pb–Br or Pb–Cl perovskites upon exposure to Br(2) or Cl(2) gas, respectively....
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Royal Society of Chemistry
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5707501/ https://www.ncbi.nlm.nih.gov/pubmed/29218171 http://dx.doi.org/10.1039/c5sc01135c |
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author | Solis-Ibarra, D. Smith, I. C. Karunadasa, H. I. |
author_facet | Solis-Ibarra, D. Smith, I. C. Karunadasa, H. I. |
author_sort | Solis-Ibarra, D. |
collection | PubMed |
description | Reaction with halogen vapor allows us to post-synthetically exchange halides in both three- (3D) and two-dimensional (2D) organic–inorganic metal-halide perovskites. Films of 3D Pb–I perovskites cleanly convert to films of Pb–Br or Pb–Cl perovskites upon exposure to Br(2) or Cl(2) gas, respectively. This gas–solid reaction provides a simple method to produce the high-quality Pb–Br or Pb–Cl perovskite films required for optoelectronic applications. Reactivity with halogens can be extended to the organic layers in 2D metal-halide perovskites. Here, terminal alkene groups placed between the inorganic layers can capture Br(2) gas through chemisorption to form dibromoalkanes. This reaction's selectivity for Br(2) over I(2) allows us to scrub Br(2) to obtain high-purity I(2) gas streams. We also observe unusual halogen transfer between the inorganic and organic layers within a single perovskite structure. Remarkably, the perovskite's crystallinity is retained during these massive structural rearrangements. |
format | Online Article Text |
id | pubmed-5707501 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-57075012017-12-07 Post-synthetic halide conversion and selective halogen capture in hybrid perovskites Solis-Ibarra, D. Smith, I. C. Karunadasa, H. I. Chem Sci Chemistry Reaction with halogen vapor allows us to post-synthetically exchange halides in both three- (3D) and two-dimensional (2D) organic–inorganic metal-halide perovskites. Films of 3D Pb–I perovskites cleanly convert to films of Pb–Br or Pb–Cl perovskites upon exposure to Br(2) or Cl(2) gas, respectively. This gas–solid reaction provides a simple method to produce the high-quality Pb–Br or Pb–Cl perovskite films required for optoelectronic applications. Reactivity with halogens can be extended to the organic layers in 2D metal-halide perovskites. Here, terminal alkene groups placed between the inorganic layers can capture Br(2) gas through chemisorption to form dibromoalkanes. This reaction's selectivity for Br(2) over I(2) allows us to scrub Br(2) to obtain high-purity I(2) gas streams. We also observe unusual halogen transfer between the inorganic and organic layers within a single perovskite structure. Remarkably, the perovskite's crystallinity is retained during these massive structural rearrangements. Royal Society of Chemistry 2015-07-01 2015-05-05 /pmc/articles/PMC5707501/ /pubmed/29218171 http://dx.doi.org/10.1039/c5sc01135c Text en This journal is © The Royal Society of Chemistry 2015 https://creativecommons.org/licenses/by-nc/3.0/This article is freely available. This article is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported Licence (CC BY-NC 3.0) |
spellingShingle | Chemistry Solis-Ibarra, D. Smith, I. C. Karunadasa, H. I. Post-synthetic halide conversion and selective halogen capture in hybrid perovskites |
title | Post-synthetic halide conversion and selective halogen capture in hybrid perovskites
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title_full | Post-synthetic halide conversion and selective halogen capture in hybrid perovskites
|
title_fullStr | Post-synthetic halide conversion and selective halogen capture in hybrid perovskites
|
title_full_unstemmed | Post-synthetic halide conversion and selective halogen capture in hybrid perovskites
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title_short | Post-synthetic halide conversion and selective halogen capture in hybrid perovskites
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title_sort | post-synthetic halide conversion and selective halogen capture in hybrid perovskites |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5707501/ https://www.ncbi.nlm.nih.gov/pubmed/29218171 http://dx.doi.org/10.1039/c5sc01135c |
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