Paper strip-embedded graphene quantum dots: a screening device with a smartphone readout

Abstract Simple, inexpensive and rapid sensing systems are very demanded for a myriad of uses. Intrinsic properties of emerging paper-based analytical devices have demonstrated considerable potential to fulfill such demand. This work reports an easy-to-use, low cost, and disposable paper-based sensi...

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Autores principales:	Ruslan Álvarez-Diduk, Jahir Orozco, Arben Merkoçi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8aae72d88dd0473881fe9915c0edb4bc
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spelling	oai:doaj.org-article:8aae72d88dd0473881fe9915c0edb4bc2021-12-02T11:53:07ZPaper strip-embedded graphene quantum dots: a screening device with a smartphone readout10.1038/s41598-017-01134-32045-2322https://doaj.org/article/8aae72d88dd0473881fe9915c0edb4bc2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01134-3https://doaj.org/toc/2045-2322Abstract Simple, inexpensive and rapid sensing systems are very demanded for a myriad of uses. Intrinsic properties of emerging paper-based analytical devices have demonstrated considerable potential to fulfill such demand. This work reports an easy-to-use, low cost, and disposable paper-based sensing device for rapid chemical screening with a smartphone readout. The device comprises luminescent graphene quantum dots (GQDs) sensing probes embedded into a nitrocellulose matrix where the resonance energy transfer phenomenon seems to be the sensing mechanism. The GQDs probes were synthesized from citric acid by a pyrolysis procedure, further physisorbed and confined into small wax-traced spots on the nitrocellulose substrate. The GQDs were excited by an UV LED, this, is powered by a smartphone used as both; energy source and imaging capture. The LED was contained within a 3D-printed dark chamber that isolates the paper platform from external light fluctuations leading to highly reproducible data. The cellulose-based device was proven as a promising screening tool for phenols and polyphenols in environmental and food samples, respectively. It opens up new opportunities for simple and fast screening of organic compounds and offers numerous possibilities for versatile applications. It can be especially useful in remote settings where sophisticated instrumentation is not always available.Ruslan Álvarez-DidukJahir OrozcoArben MerkoçiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ruslan Álvarez-Diduk Jahir Orozco Arben Merkoçi Paper strip-embedded graphene quantum dots: a screening device with a smartphone readout
description	Abstract Simple, inexpensive and rapid sensing systems are very demanded for a myriad of uses. Intrinsic properties of emerging paper-based analytical devices have demonstrated considerable potential to fulfill such demand. This work reports an easy-to-use, low cost, and disposable paper-based sensing device for rapid chemical screening with a smartphone readout. The device comprises luminescent graphene quantum dots (GQDs) sensing probes embedded into a nitrocellulose matrix where the resonance energy transfer phenomenon seems to be the sensing mechanism. The GQDs probes were synthesized from citric acid by a pyrolysis procedure, further physisorbed and confined into small wax-traced spots on the nitrocellulose substrate. The GQDs were excited by an UV LED, this, is powered by a smartphone used as both; energy source and imaging capture. The LED was contained within a 3D-printed dark chamber that isolates the paper platform from external light fluctuations leading to highly reproducible data. The cellulose-based device was proven as a promising screening tool for phenols and polyphenols in environmental and food samples, respectively. It opens up new opportunities for simple and fast screening of organic compounds and offers numerous possibilities for versatile applications. It can be especially useful in remote settings where sophisticated instrumentation is not always available.
format	article
author	Ruslan Álvarez-Diduk Jahir Orozco Arben Merkoçi
author_facet	Ruslan Álvarez-Diduk Jahir Orozco Arben Merkoçi
author_sort	Ruslan Álvarez-Diduk
title	Paper strip-embedded graphene quantum dots: a screening device with a smartphone readout
title_short	Paper strip-embedded graphene quantum dots: a screening device with a smartphone readout
title_full	Paper strip-embedded graphene quantum dots: a screening device with a smartphone readout
title_fullStr	Paper strip-embedded graphene quantum dots: a screening device with a smartphone readout
title_full_unstemmed	Paper strip-embedded graphene quantum dots: a screening device with a smartphone readout
title_sort	paper strip-embedded graphene quantum dots: a screening device with a smartphone readout
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8aae72d88dd0473881fe9915c0edb4bc
work_keys_str_mv	AT ruslanalvarezdiduk paperstripembeddedgraphenequantumdotsascreeningdevicewithasmartphonereadout AT jahirorozco paperstripembeddedgraphenequantumdotsascreeningdevicewithasmartphonereadout AT arbenmerkoci paperstripembeddedgraphenequantumdotsascreeningdevicewithasmartphonereadout
_version_	1718394877077618688

Paper strip-embedded graphene quantum dots: a screening device with a smartphone readout

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