Gold nanostructures for the sensing of pH using a smartphone.
Journal
RSC advances
ISSN: 2046-2069
Titre abrégé: RSC Adv
Pays: England
ID NLM: 101581657
Informations de publication
Date de publication:
23 Oct 2019
23 Oct 2019
Historique:
received:
04
09
2019
accepted:
07
10
2019
entrez:
9
5
2022
pubmed:
23
10
2019
medline:
23
10
2019
Statut:
epublish
Résumé
Recently, metal nanostructures have been found to be capable of recognizing small changes in their surrounding environment, which can be utilized as significant sensing tools. In this study, we demonstrated colorimetric sensing of pH by gold nanostructures (GNs) using a simple smartphone. An indigenously developed Android app based on the CIELab 1931 analysis, which could run in a smartphone, was used for the precise determination of the pH value of liquid media. The pH value of an unknown solution obtained from the developed Android app was also compared with that obtained from the conventional ratiometric technique and a commercial pH meter. In another endeavor, it was found that the synthesized GNs demonstrated a high energy transfer efficiency from a donor (namely, the rhodamine 6G, (Rh 6G)) dye. This property of the GNs can be utilized further in the future for studying different bimolecular activities within the human body. It was found that the photoluminescence (PL) of Rh 6G was quenched when it was kept in the vicinity of the synthesized GNs, which was explained in terms of the Förster energy transfer mechanism. Thus, the present study will open up a plethora of opportunities for researchers to employ the nanostructures of gold and other metals in developing low-cost and Internet of Things (IoT)-based sensing devices using only a smart phone.
Identifiants
pubmed: 35529967
doi: 10.1039/c9ra07101f
pii: c9ra07101f
pmc: PMC9073677
doi:
Types de publication
Journal Article
Langues
eng
Pagination
34144-34151Informations de copyright
This journal is © The Royal Society of Chemistry.
Déclaration de conflit d'intérêts
There is no conflicts of interest.
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