A Fast-Response pH Optode Based on a Fluoroionophore Immobilized to a Mesoporous Silica Thin Film

Hiruta, Yuki; Ando, Yosuke; Citterio, Daniel; Suzuki, Kôji

doi:10.2116/analsci.26.297

Cited by 11 publications

(12 citation statements)

References 24 publications

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“…Optical sensors consist of optodes prepared by optically clear thin films attached covalently with fluorescent entities sensitive to pH (138). Hirura et al fabricated a pH optode device by attaching a fluorophore agent with a PMS thin film (139). However, optodes suffer from small-range measurements (128) and ISFET are preferred technology to sense pH.…”

Section: Sensors For Physical Parametersmentioning

confidence: 99%

Organs-on-chip monitoring: sensors and other strategies

Kilic¹,

Navaee²,

Stradolini³

et al. 2018

Microphysiol Syst

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Section: Sensors For Physical Parametersmentioning

confidence: 99%

Organs-on-chip monitoring: sensors and other strategies

Kilic¹,

Navaee²,

Stradolini³

et al. 2018

Microphysiol Syst

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“…By embedding two colorimetric indicators, neutral red and methyl yellow, in the second solgel layer, an extended linear range from pH 4.0 to 10.0 was demonstrated [124]. Duong et al reported on a hybrid pH material composed of MTEOS/GPTMS and covalently bound fluoresceinamine [125]. The pH sensor linear range extended from pH 6.0-9.0, no leaching, small sensor drift (RSD 1.24 %, pH 10, 16 min) and very short response time of 8 s. The temperature did not have a significant influence on sensor response.…”

Section: Luminescence-based Ph Co 2 and Nh 3 Sensorsmentioning

confidence: 99%

Micro- and nanostructured sol-gel-based materials for optical chemical sensing (2005–2015)

2016

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This review (with 172 references) highlights the progress made in the past 10 years in silica sol-gel-based materials for use in optical chemical sensing. Following an introduction, the processes leading to the sol-gel-based and ormosil materials, their printability and methods for characterisation are discussed. Then various classes of optical sensors, with a focus on sensors for pH values, oxygen, carbon dioxide, ammonia (also in dissolved form), and heavy metal ions are described. A further section covers nanoparticle-based optical sensors mainly for use in intracellular sensing of the above species. Recent developments in this area are also emphasised and future trends discussed.

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“…Like absorption-based sensors, luminescence-based sensors for pH, CO 2 , and ammonia are also based on the changes in luminescence of a pH indicator. Recently, a pH sensing device based on indicator-mediated luminescence sensing scheme was reported [101]. In that work, a fluoroionophore substituted with a silane coupling agent (KBH-01-Si) was successfully synthesized.…”

Section: Indicator-mediated Sensingmentioning

confidence: 99%