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Enhanced Chitosan Photoluminescence by Incorporation of Lithium Perchlorate

[Image: see text] An improvement in chitosan film photoluminescence was observed after adding LiClO(4). FTIR spectra, XPS, DFT calculations, and XRD measurements show an alteration of the H-bonds and an increase in the amorphous character of chitosan. PL spectra display a growth in intensity in the...

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Autores principales: Gurumendi, Marlon, López, Floralba, Borrero-González, Luis J., Terencio, Thibault, Caetano, Manuel, Reinoso, Carlos, González, Gema
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10116549/
https://www.ncbi.nlm.nih.gov/pubmed/37091431
http://dx.doi.org/10.1021/acsomega.2c08072
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author Gurumendi, Marlon
López, Floralba
Borrero-González, Luis J.
Terencio, Thibault
Caetano, Manuel
Reinoso, Carlos
González, Gema
author_facet Gurumendi, Marlon
López, Floralba
Borrero-González, Luis J.
Terencio, Thibault
Caetano, Manuel
Reinoso, Carlos
González, Gema
author_sort Gurumendi, Marlon
collection PubMed
description [Image: see text] An improvement in chitosan film photoluminescence was observed after adding LiClO(4). FTIR spectra, XPS, DFT calculations, and XRD measurements show an alteration of the H-bonds and an increase in the amorphous character of chitosan. PL spectra display a growth in intensity in the visible region along with the incorporation of lithium, signaling a possible rise in the population density of tail states and, consequently, better photon absorption, as observed from UV–vis measurements. A mechanism through aggregation-induced emission effect is proposed to explain the different results. Although this work establishes the relation between structural changes provoked by LiClO(4) incorporation and luminescence in the case of chitosan, we expect that the same approach could be generalized to similar polymeric structures.
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spelling pubmed-101165492023-04-21 Enhanced Chitosan Photoluminescence by Incorporation of Lithium Perchlorate Gurumendi, Marlon López, Floralba Borrero-González, Luis J. Terencio, Thibault Caetano, Manuel Reinoso, Carlos González, Gema ACS Omega [Image: see text] An improvement in chitosan film photoluminescence was observed after adding LiClO(4). FTIR spectra, XPS, DFT calculations, and XRD measurements show an alteration of the H-bonds and an increase in the amorphous character of chitosan. PL spectra display a growth in intensity in the visible region along with the incorporation of lithium, signaling a possible rise in the population density of tail states and, consequently, better photon absorption, as observed from UV–vis measurements. A mechanism through aggregation-induced emission effect is proposed to explain the different results. Although this work establishes the relation between structural changes provoked by LiClO(4) incorporation and luminescence in the case of chitosan, we expect that the same approach could be generalized to similar polymeric structures. American Chemical Society 2023-04-05 /pmc/articles/PMC10116549/ /pubmed/37091431 http://dx.doi.org/10.1021/acsomega.2c08072 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Gurumendi, Marlon
López, Floralba
Borrero-González, Luis J.
Terencio, Thibault
Caetano, Manuel
Reinoso, Carlos
González, Gema
Enhanced Chitosan Photoluminescence by Incorporation of Lithium Perchlorate
title Enhanced Chitosan Photoluminescence by Incorporation of Lithium Perchlorate
title_full Enhanced Chitosan Photoluminescence by Incorporation of Lithium Perchlorate
title_fullStr Enhanced Chitosan Photoluminescence by Incorporation of Lithium Perchlorate
title_full_unstemmed Enhanced Chitosan Photoluminescence by Incorporation of Lithium Perchlorate
title_short Enhanced Chitosan Photoluminescence by Incorporation of Lithium Perchlorate
title_sort enhanced chitosan photoluminescence by incorporation of lithium perchlorate
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10116549/
https://www.ncbi.nlm.nih.gov/pubmed/37091431
http://dx.doi.org/10.1021/acsomega.2c08072
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