Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/80935
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Garcia-Amorós, Jaume | por |
dc.contributor.author | Castro, M. Cidália R. | por |
dc.contributor.author | Raposo, M. Manuela M. | por |
dc.contributor.author | Velasco, Dolores | por |
dc.date.accessioned | 2022-12-04T19:14:31Z | - |
dc.date.available | 2022-12-04T19:14:31Z | - |
dc.date.issued | 2023 | - |
dc.identifier.citation | Garcia-Amorós, J.; Castro, M. C. R.; Raposo, M. M. M.; Velasco, D. Stable photochromic heteroarylethenes with fast thermal isomerization kinetics. Dyes Pigments. 2023, 210, 111000. https://doi.org/10.1016/j.dyepig.2022.111000 | por |
dc.identifier.issn | 0143-7208 | por |
dc.identifier.uri | https://hdl.handle.net/1822/80935 | - |
dc.description | Supplementary data to this article can be found online at https://doi.org/10.1016/j.dyepig.2022.111000 | por |
dc.description.abstract | Stilbenes (diphenylethenes) are fully examined organic chromophores for very diverse applications. However, these molecules might show poor stability under irradiation because several simultaneous reactions (oxidative photocyclization and dimerization) can take place during the photochemical isomerization of their C=C bond. In this context, heteroarylethenes emerge as powerful counterparts thanks to their improved stability. In addition, the chosen heterocycles and their functionalization allows to fine tune and increase the speed at which the thermal back reaction occurs, broadening the scope of application of the resulting chromophores. Here we report on the thermal Z-to-E isomerization kinetics of a series of rationally designed heteroarylethenes and how the chemical architecture of the chromophore modulates the speed of the process. Specifically, the metastable Z isomers display relaxation times covering a wide time window, from a few hours to hundreds of microseconds. In fact, one of the studied dyes is the fastest heteroarylethene known to date. It should be also noticed that the described heteroarylethenes exhibit great photochemical stability, it being possible to switch them back and forth many times without degradation. | por |
dc.description.sponsorship | This research was funded by the Ministerio de Ciencia, Innovacion y Universidades (Spain)/Agencia Estatal de Investigacion (Spain)/Fondo Europeo de Dearrollo Regional (FEDER, European Union), grant number PGC2018-095477-B-I00. Thanks are also due to Fundação para a Ciência e Tecnologia (FCT) and to FEDER-COMPETE for financial support through the research center CQUM (UID/QUI/0686/2016) and (UID/ QUI/0686/2020). The NMR spectrometers are part of the National NMR Network (PTNMR) and are partially supported by Infrastructure Project Nº 022161 (co-financed by FEDER through COMPETE 2020, POCI and PORL and FCT through PIDDAC). Authors also thank Prof. Santi Nonell for granting access to the nanosecond laser flash photolysis setup. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F0686%2F2016/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00686%2F2020/PT | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | azo dyes | por |
dc.subject | synthesis | por |
dc.subject | heterocycles | por |
dc.subject | thiophene | por |
dc.subject | pyrrole | por |
dc.subject | Heteroarylethenes | por |
dc.subject | Isomerization | por |
dc.subject | Molecular switches | por |
dc.subject | Photochromism | por |
dc.title | Photochromic heteroarylethenes with fast thermal isomerization kinetics | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://doi.org/10.1016/j.dyepig.2022.111000 | por |
oaire.citationVolume | 210 | por |
dc.identifier.doi | 10.1016/j.dyepig.2022.111000 | por |
dc.subject.fos | Ciências Naturais::Ciências Químicas | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Dyes and Pigments | por |
oaire.version | VoR | por |
dc.identifier.articlenumber | 111000 | por |
dc.subject.ods | Indústria, inovação e infraestruturas | por |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
1-s2.0-S0143720822009226-main.pdf | Manuscript | 2,89 MB | Adobe PDF | Ver/Abrir |
1-s2.0-S0143720822009226-mmc.pdf | Supporting Information | 822,35 kB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons