Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Outros Autores: | , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/83772 |
Resumo: | Textiles are important components for the development of lightweight and flexible displays useful in smart materials. In particular, halochromic textiles are fibrous materials with a color-changing ability triggered by pH variations mainly based on pH-sensitive dye molecules. Recently, a novel class of 2-aminoimidazole azo dyes was developed with distinct substituent patterns. In this work, silk fabric was functionalized through exhaustion for the first time with one of these dyes (AzoIz.Pip). The halochromic properties of the dye were assessed in an aqueous solution and after silk functionalization. The solutions and the fabrics were thoroughly analyzed by ultraviolet-visible (UV-vis) spectra, color strength (K/S), color difference (∆E), CIE L*a*b* coordinates, and the ultraviolet protection factor (UPF). The dyeing process was optimized, and the halochromic performance (and reversibility) was assessed in universal Britton–Robinson buffers (ranging from pH 3 to 12) and artificial body fluids (acid and alkaline perspiration, and wound exudate). AzoIz.Pip showed vibrant colors and attractive halochromic properties with a hypsochromic shift from blue (557 nm) to magenta (536 nm) in aqueous buffered solutions. Similarly, the functionalized silk showed a shift in wavelength of the maximum K/S value from 590 nm to 560 nm when pH increases. The silk fabric showed a high affinity to AzoIz.Pip, and promoted additional color stabilization of the dye, avoiding color loss as observed when the dye is in solution at alkaline pH after 24 h. The color reversibility was effective up to the fourth cycle and the fastness tests denoted suitable results, except washing fastness. The cytotoxicity of the silk fabric extracts was assessed, depicting reduced viability of HaCaT cells to <70% only when the dye concentration in the fabric is higher or equal to 64 μg·mL−1. Nevertheless, lower concentrations were also very effective for the halochromic performance in silk. These materials can thus be a helpful tool for developing sensors in several sectors such as biomedicine, packaging, filtration, agriculture, protective apparel, sports, camouflage, architecture, and design. |
id |
RCAP_4bb7e9b06b21c83e5471cabad31fc295 |
---|---|
oai_identifier_str |
oai:repositorium.sdum.uminho.pt:1822/83772 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dyeAzo dyesImidazoleSilkHalochromismSmart materialspH-responsiveEngenharia e Tecnologia::Engenharia dos MateriaisScience & TechnologyTextiles are important components for the development of lightweight and flexible displays useful in smart materials. In particular, halochromic textiles are fibrous materials with a color-changing ability triggered by pH variations mainly based on pH-sensitive dye molecules. Recently, a novel class of 2-aminoimidazole azo dyes was developed with distinct substituent patterns. In this work, silk fabric was functionalized through exhaustion for the first time with one of these dyes (AzoIz.Pip). The halochromic properties of the dye were assessed in an aqueous solution and after silk functionalization. The solutions and the fabrics were thoroughly analyzed by ultraviolet-visible (UV-vis) spectra, color strength (K/S), color difference (∆E), CIE L*a*b* coordinates, and the ultraviolet protection factor (UPF). The dyeing process was optimized, and the halochromic performance (and reversibility) was assessed in universal Britton–Robinson buffers (ranging from pH 3 to 12) and artificial body fluids (acid and alkaline perspiration, and wound exudate). AzoIz.Pip showed vibrant colors and attractive halochromic properties with a hypsochromic shift from blue (557 nm) to magenta (536 nm) in aqueous buffered solutions. Similarly, the functionalized silk showed a shift in wavelength of the maximum K/S value from 590 nm to 560 nm when pH increases. The silk fabric showed a high affinity to AzoIz.Pip, and promoted additional color stabilization of the dye, avoiding color loss as observed when the dye is in solution at alkaline pH after 24 h. The color reversibility was effective up to the fourth cycle and the fastness tests denoted suitable results, except washing fastness. The cytotoxicity of the silk fabric extracts was assessed, depicting reduced viability of HaCaT cells to <70% only when the dye concentration in the fabric is higher or equal to 64 μg·mL−1. Nevertheless, lower concentrations were also very effective for the halochromic performance in silk. These materials can thus be a helpful tool for developing sensors in several sectors such as biomedicine, packaging, filtration, agriculture, protective apparel, sports, camouflage, architecture, and design.This work was funded by the European Regional Development Fund through the Operational Competitiveness Program and the National Foundation for Science and Technology of Portugal (FCT) under the projects UID/CTM/00264/2020 of Centre for Textile Science and Technology (2C2T), UIDB/00686/2020 of Chemistry Centre of University of Minho (CQUM), UIBD/04423/2020 and UIDP//04423/2020 of Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), MEDCOR PTDC/CTM-TEX/1213/2020 and BIOCOLOUR POCI-01-0247-FEDER-068924.Multidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoRibeiro, Ana IsabelVieira, Bárbara MarquesAlves, Cátia Sofia PereiraSilva, BárbaraPinto, EugéniaCerqueira, FátimaSilva, RenataRemião, FernandoShvalya, VasylCvelbar, UrosPadrão, JorgeDias, AliceZille, Andrea20232023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/83772engRibeiro, A.I.; Vieira, B.; Alves, C.; Silva, B.; Pinto, E.; Cerqueira, F.; Silva, R.; Remião, F.; Shvalya, V.; Cvelbar, U.; Padrão, J.; Dias, A.M.; Zille, A. Halochromic Silk Fabric as a Reversible pH-Sensor Based on a Novel 2-Aminoimidazole Azo Dye. Polymers 2023, 15, 1730. https://doi.org/10.3390/polym150717302073-436010.3390/polym150717301730https://www.mdpi.com/2073-4360/15/7/1730info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:24:02Zoai:repositorium.sdum.uminho.pt:1822/83772Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:17:55.387897Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye |
title |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye |
spellingShingle |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye Ribeiro, Ana Isabel Azo dyes Imidazole Silk Halochromism Smart materials pH-responsive Engenharia e Tecnologia::Engenharia dos Materiais Science & Technology |
title_short |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye |
title_full |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye |
title_fullStr |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye |
title_full_unstemmed |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye |
title_sort |
Halochromic silk fabric as a reversible pH-sensor based on a novel 2-aminoimidazole azo dye |
author |
Ribeiro, Ana Isabel |
author_facet |
Ribeiro, Ana Isabel Vieira, Bárbara Marques Alves, Cátia Sofia Pereira Silva, Bárbara Pinto, Eugénia Cerqueira, Fátima Silva, Renata Remião, Fernando Shvalya, Vasyl Cvelbar, Uros Padrão, Jorge Dias, Alice Zille, Andrea |
author_role |
author |
author2 |
Vieira, Bárbara Marques Alves, Cátia Sofia Pereira Silva, Bárbara Pinto, Eugénia Cerqueira, Fátima Silva, Renata Remião, Fernando Shvalya, Vasyl Cvelbar, Uros Padrão, Jorge Dias, Alice Zille, Andrea |
author2_role |
author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Ribeiro, Ana Isabel Vieira, Bárbara Marques Alves, Cátia Sofia Pereira Silva, Bárbara Pinto, Eugénia Cerqueira, Fátima Silva, Renata Remião, Fernando Shvalya, Vasyl Cvelbar, Uros Padrão, Jorge Dias, Alice Zille, Andrea |
dc.subject.por.fl_str_mv |
Azo dyes Imidazole Silk Halochromism Smart materials pH-responsive Engenharia e Tecnologia::Engenharia dos Materiais Science & Technology |
topic |
Azo dyes Imidazole Silk Halochromism Smart materials pH-responsive Engenharia e Tecnologia::Engenharia dos Materiais Science & Technology |
description |
Textiles are important components for the development of lightweight and flexible displays useful in smart materials. In particular, halochromic textiles are fibrous materials with a color-changing ability triggered by pH variations mainly based on pH-sensitive dye molecules. Recently, a novel class of 2-aminoimidazole azo dyes was developed with distinct substituent patterns. In this work, silk fabric was functionalized through exhaustion for the first time with one of these dyes (AzoIz.Pip). The halochromic properties of the dye were assessed in an aqueous solution and after silk functionalization. The solutions and the fabrics were thoroughly analyzed by ultraviolet-visible (UV-vis) spectra, color strength (K/S), color difference (∆E), CIE L*a*b* coordinates, and the ultraviolet protection factor (UPF). The dyeing process was optimized, and the halochromic performance (and reversibility) was assessed in universal Britton–Robinson buffers (ranging from pH 3 to 12) and artificial body fluids (acid and alkaline perspiration, and wound exudate). AzoIz.Pip showed vibrant colors and attractive halochromic properties with a hypsochromic shift from blue (557 nm) to magenta (536 nm) in aqueous buffered solutions. Similarly, the functionalized silk showed a shift in wavelength of the maximum K/S value from 590 nm to 560 nm when pH increases. The silk fabric showed a high affinity to AzoIz.Pip, and promoted additional color stabilization of the dye, avoiding color loss as observed when the dye is in solution at alkaline pH after 24 h. The color reversibility was effective up to the fourth cycle and the fastness tests denoted suitable results, except washing fastness. The cytotoxicity of the silk fabric extracts was assessed, depicting reduced viability of HaCaT cells to <70% only when the dye concentration in the fabric is higher or equal to 64 μg·mL−1. Nevertheless, lower concentrations were also very effective for the halochromic performance in silk. These materials can thus be a helpful tool for developing sensors in several sectors such as biomedicine, packaging, filtration, agriculture, protective apparel, sports, camouflage, architecture, and design. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023 2023-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/83772 |
url |
https://hdl.handle.net/1822/83772 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ribeiro, A.I.; Vieira, B.; Alves, C.; Silva, B.; Pinto, E.; Cerqueira, F.; Silva, R.; Remião, F.; Shvalya, V.; Cvelbar, U.; Padrão, J.; Dias, A.M.; Zille, A. Halochromic Silk Fabric as a Reversible pH-Sensor Based on a Novel 2-Aminoimidazole Azo Dye. Polymers 2023, 15, 1730. https://doi.org/10.3390/polym15071730 2073-4360 10.3390/polym15071730 1730 https://www.mdpi.com/2073-4360/15/7/1730 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute (MDPI) |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute (MDPI) |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799132633212387328 |