Microsystem-assisted synthesis of carbon dots with fluorescent and colorimetric properties for pH detection

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dc.contributor.author Gómez-de Pedro, Sara
dc.contributor.author Salinas-Castillo, A.
dc.contributor.author Ariza-Avidad, S.M.
dc.contributor.author Lapresta-Fernández, A.
dc.contributor.author Sánchez Gómez, C.
dc.contributor.author Martínez Cisneros, Cynthia Susana
dc.contributor.author Puyol, Mar
dc.contributor.author Capitán-Vallvey, L.F.
dc.contributor.author Alonso Chamarro, Julián
dc.date.accessioned 2018-04-25T09:17:24Z
dc.date.available 2018-04-25T09:17:24Z
dc.date.issued 2014-03-13
dc.identifier.bibliographicCitation Gómez-de Pedro, S., Salinas-Castillo, A., Ariza- Avidad, M., Lapresta-Fernández, A., Sánchez-González, C., Martínez-Cisneros, C.S., Puyol, M., Capitan-Vallvey, L.F., Alonso-Chamarro, J. (2014). Microsystem-assisted synthesis of carbon dots with fluorescent and colorimetric properties for pH detection. Nanoscale, 6, pp. 6018-6024.
dc.identifier.issn 2040-3364
dc.identifier.uri http://hdl.handle.net/10016/26724
dc.description.abstract The present paper describes the use of a microfluidic system to synthesize carbon dots (Cdots) and their use as optical pH sensors. The synthesis is based on the thermal decomposition of ascorbic acid in dimethyl sulfoxide. The proposed microsystem is composed of a fluidic and a thermal platform, which enable proper control of synthesis variables. Uniform and monodispersed 3.3 nm-sized Cdots have been synthesized, the optical characterization of which showed their down/upconversion luminescence and colorimetric properties. The obtained Cdots have been used for pH detection with down and upconverison fluorescent properties as excitation sources. The naked eye or a photographic digital camera has also been implemented as detection systems with the hue parameter showing a linear pH range from 3.5 to 10.2. On the other hand, experiments on the cytotoxicity and permeability of the Cdots on human embryonic kidney cells revealed their adsorption on cells without causing any impact on the cellular morphology.
dc.description.sponsorship This work was supported by Projects SGR 2009-0323 from Catalonia Government and P10-FQM-5974 from the Junta de Andalucía (Spain). These projects were partially supported by European Regional Development Funds (ERDF). Our thanks to “Reincorporacion de Doctores UGR” programs and Greib startup
dc.format.extent 7
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher The Royal Society of Chemistry
dc.rights © The Royal Society of Chemistry
dc.title Microsystem-assisted synthesis of carbon dots with fluorescent and colorimetric properties for pH detection
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.identifier.doi https://doi.org/10.1039/c4nr00573b
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. CTQ2009-14428-C02-01
dc.relation.projectID Gobierno de España. CTQ2009-12128
dc.relation.projectID Gobierno de España. CTQ2012-36165
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 6018
dc.identifier.publicationlastpage 6024
dc.identifier.publicationtitle Nanoscale
dc.identifier.publicationvolume 6
dc.identifier.uxxi AR/0000021131
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