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A Review of Luminescent Anionic Nano System: d(10) Metallocyanide Excimers and Exciplexes in Alkali Halide Hosts

Dicyanoaurate, dicyanoargentate, and dicyanocuprate ions in solution and doped in different alkali halide hosts exhibit interesting photophysical and photochemical behavior, such as multiple emission bands, exciplex tuning, optical memory, and thermochromism. This is attributed to the formation of d...

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Autores principales: Li, Xiaobo, Patterson, Howard H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5521220/
https://www.ncbi.nlm.nih.gov/pubmed/28811397
http://dx.doi.org/10.3390/ma6072595
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author Li, Xiaobo
Patterson, Howard H.
author_facet Li, Xiaobo
Patterson, Howard H.
author_sort Li, Xiaobo
collection PubMed
description Dicyanoaurate, dicyanoargentate, and dicyanocuprate ions in solution and doped in different alkali halide hosts exhibit interesting photophysical and photochemical behavior, such as multiple emission bands, exciplex tuning, optical memory, and thermochromism. This is attributed to the formation of different sizes of nanoclusters in solution and in doped hosts. A series of spectroscopic methods (luminescence, UV-reflectance, IR, and Raman) as well as theoretical calculations have confirmed the existence of excimers and exciplexes. This leads to the tunability of these nano systems over a wide wavelength interval. The population of these nanoclusters varies with temperature and external laser irradiation, which explains the thermochromism and optical memory. DFT calculations indicate an MLCT transition for each nanocluster and the emission energy decreases with increasing cluster size. This is in agreement with the relatively long life-time for the emission peaks and the multiple emission peaks dependence upon cluster concentration.
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spelling pubmed-55212202017-07-28 A Review of Luminescent Anionic Nano System: d(10) Metallocyanide Excimers and Exciplexes in Alkali Halide Hosts Li, Xiaobo Patterson, Howard H. Materials (Basel) Review Dicyanoaurate, dicyanoargentate, and dicyanocuprate ions in solution and doped in different alkali halide hosts exhibit interesting photophysical and photochemical behavior, such as multiple emission bands, exciplex tuning, optical memory, and thermochromism. This is attributed to the formation of different sizes of nanoclusters in solution and in doped hosts. A series of spectroscopic methods (luminescence, UV-reflectance, IR, and Raman) as well as theoretical calculations have confirmed the existence of excimers and exciplexes. This leads to the tunability of these nano systems over a wide wavelength interval. The population of these nanoclusters varies with temperature and external laser irradiation, which explains the thermochromism and optical memory. DFT calculations indicate an MLCT transition for each nanocluster and the emission energy decreases with increasing cluster size. This is in agreement with the relatively long life-time for the emission peaks and the multiple emission peaks dependence upon cluster concentration. MDPI 2013-06-25 /pmc/articles/PMC5521220/ /pubmed/28811397 http://dx.doi.org/10.3390/ma6072595 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Review
Li, Xiaobo
Patterson, Howard H.
A Review of Luminescent Anionic Nano System: d(10) Metallocyanide Excimers and Exciplexes in Alkali Halide Hosts
title A Review of Luminescent Anionic Nano System: d(10) Metallocyanide Excimers and Exciplexes in Alkali Halide Hosts
title_full A Review of Luminescent Anionic Nano System: d(10) Metallocyanide Excimers and Exciplexes in Alkali Halide Hosts
title_fullStr A Review of Luminescent Anionic Nano System: d(10) Metallocyanide Excimers and Exciplexes in Alkali Halide Hosts
title_full_unstemmed A Review of Luminescent Anionic Nano System: d(10) Metallocyanide Excimers and Exciplexes in Alkali Halide Hosts
title_short A Review of Luminescent Anionic Nano System: d(10) Metallocyanide Excimers and Exciplexes in Alkali Halide Hosts
title_sort review of luminescent anionic nano system: d(10) metallocyanide excimers and exciplexes in alkali halide hosts
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5521220/
https://www.ncbi.nlm.nih.gov/pubmed/28811397
http://dx.doi.org/10.3390/ma6072595
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