Ratiometric Dissolved Oxygen Sensors Based on Ruthenium Complex Doped with Silver Nanoparticles

Jiang, Zike; Yu, Xinsheng; Zhai, Shikui; Hao, Yingyan

doi:10.3390/s17030548

Cited by 39 publications

(25 citation statements)

References 40 publications

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“…While the optical sensitivity of gold-ceria nanoparticles to metallic iron tiny particles is higher than for pure ceria, it is also less linear. Based on the intensity change as shown in Figure 5, the relative change in the fluorescence emissions intensity at different iron concentrations is described in Figure 7, according to the Stern-Volmer relation [19] I o /I = 1…”

Section: Resultsmentioning

confidence: 99%

Gold/QDs-Embedded-Ceria Nanoparticles: Optical Fluorescence Enhancement as a Quenching Sensor

Shehata

Kandas

2020

Applied Sciences

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This work focuses on improving the fluorescence intensity of cerium oxide (ceria) nanoparticles (NPs) through added plasmonic nanostructures. Ceria nanoparticles are fluorescent nanostructures which can emit visible fluorescence emissions under violet excitation. Here, we investigated different added plasmonic nanostructures, such as gold nanoparticles (Au NPs) and Cadmium sulfide/selenide quantum dots (CdS/CdSe QDs), to check the enhancement of fluorescence intensity emissions caused by ceria NPs. Different plasmonic resonances of both aforementioned nanostructures have been selected to develop optical coupling with both fluorescence excitation and emission wavelengths of ceria. In addition, different additions whether in-situ or post-synthesis have been investigated. We found that in-situ Au NPs of a 530 nm plasmonic resonance wavelength provides the highest fluorescence emissions of ceria NPs compared to other embedded plasmonic structures. In addition to the optical coupling between plasmonic resonance of Au with the visible emissions fluorescence spectrum of ceria nanoparticles, the 530 nm in-situ Au NPs were found to reduce the bandgap of ceria NPs. We suggest that the formation of more tri-valent cerium ions traps energy levels along with more associated oxygen vacancies, which is responsible for increasing the fluorescence visible emissions intensity caused by ceria. As an application, the gold-ceria NPs is shown to optically detect the varied concentration of iron tiny particles in aqueous medium based on a fluorescence quenching mechanism. This work is promising in different applications such as biomarkers, cancer treatments, and environmental pollution monitoring.

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Section: Resultsmentioning

confidence: 99%

Gold/QDs-Embedded-Ceria Nanoparticles: Optical Fluorescence Enhancement as a Quenching Sensor

Shehata

Kandas

2020

Applied Sciences

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“…A comparison summary of the printed oxygen sensor patch with some reported oxygen sensors is shown in Table 1. It can be noticed that the printed patch has an appreciable response time and sensitivity when compared to some of the reported oxygen sensors [40][41][42][43][44][45][46] . In addition, the exibility (mechanical stability upon bending) and robustness of the printed patch was evaluated by subjecting the printed patches to various cyclic bending tests (0, 00, 200, and 300) using a micromanipulator (Universal Test Machines -eXpert 4000, ADMET), with a duty cycle of 50% and time period of 10 s (Fig.…”

Section: Resultsmentioning

confidence: 99%

Rapid prototyping of a novel and flexible paper based oxygen sensing patchviaadditive inkjet printing process

et al. 2019

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“…14 The RuDpp 3 2þ displays fluorescence quenching effects to differing levels of oxygen concentration. 15,16 We analyzed the luminescence intensity at the fluorescent layer according to RuDpp 3 2þ concentration in the sol-gel solution. For the analysis, the sol-gel solution was prepared with a composition ratio of 3.79 g: 1.45 g: 0.72 g: 21.24 mg for MTMS (Methyltrimethoxysylane, Sigma-Aldrich Chemical Co.), EtOH, H 2 O, and HCl (35%), respectively.…”

Section: Fabrication Of Fluorescent Oxygen Gas Sensor Probe Modulementioning

confidence: 99%

Fabrication of fluorescent oxygen gas-sensor probe module based on asymmetric 1 × 2 optical waveguides using UV imprint lithography

Ahn

Choi

2019

Opt. Eng.

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Fabrication of fluorescent oxygen gas-sensor probe module based on asymmetric 1 × 2 optical waveguides using UV imprint lithography," Opt. Eng. 58 (9), 097104 (2019), Abstract. We proposed and developed an integrated fluorescent oxygen gas-sensor probe module based on asymmetric 1 × 2 optical waveguides that can transmit power from an optical source and the fluorescence signal with high efficiency simultaneously. The fluorescent oxygen gas-sensor comprises an optical source part, optical detector part, and optical sensing probe part. The optical sensing probe comprises asymmetric 1 × 2 optical waveguides coated with an oxygen-sensitive fluorescent film on the end face of the optical waveguide. This optical probe module can transmit the optical power and fluorescence signal with high efficiency because of the same optical path for transmission of the optical source and the fluorescence signal. In addition, this structure facilitates an integrated miniature oxygen-sensor module. We optimally designed the asymmetric 1 × 2 optical waveguides with an asymmetric structure and different two core size. Then, we fabricated the polymeric asymmetric optical waveguides using the UV imprint lithography process suitable for cost-effective mass production. The optical oxygen-sensor probe transmitted the optical source power and the fluorescence signal with 80% and 82% efficiency, respectively. An oxygen-sensitive fluorescent film was coated on the end face of the optical waveguide by using the spray coating method. The oxygen-gas detection sensor constructed using this optical probe module with 1 × 2 asymmetric optical waveguides could measure the concentration with 0.3% resolution for a gas concentration range of 0% to 25%. This optical oxygen-sensor probe module facilitates a compact, simple, and cheap measurement system. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Ratiometric Dissolved Oxygen Sensors Based on Ruthenium Complex Doped with Silver Nanoparticles

Cited by 39 publications

References 40 publications

Gold/QDs-Embedded-Ceria Nanoparticles: Optical Fluorescence Enhancement as a Quenching Sensor

Gold/QDs-Embedded-Ceria Nanoparticles: Optical Fluorescence Enhancement as a Quenching Sensor

Rapid prototyping of a novel and flexible paper based oxygen sensing patchviaadditive inkjet printing process

Fabrication of fluorescent oxygen gas-sensor probe module based on asymmetric 1 × 2 optical waveguides using UV imprint lithography

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