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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....

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Autores principales: Solis-Ibarra, D., Smith, I. C., Karunadasa, H. I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2015
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.
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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
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
title_short Post-synthetic halide conversion and selective halogen capture in hybrid perovskites
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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