2D full-field measurement of oxygen concentration based on the phase fluorometry technique that uses the four-frame integrating-bucket method

Chu, Chen Shane; Lo, Yu-Lung

doi:10.1016/j.snb.2010.03.032

Cited by 10 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Up to now, several analytical methods have been developed for detection of BPA, such as fluorometry [8], gas chromatography-mass spectrometry [9], high-performance liquid chromatography [10], and electrochemical sensors [11]. However, the above methods are laborious and timeconsuming, which usually suffer from complicated and expensive instruments, multistep and complex sample preparation, and skilled operators.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical determination of bisphenol A with a glassy carbon electrode modified with gold nanodendrites

et al. 2014

View full text Add to dashboard Cite

Three-dimensional gold nanodendrites with (111)-oriented growth were fabricated on a glassy carbon electrode by one-step electrodeposition of AuCl 4 − in the presence of Lasparagine. The gold nanodendrites were functionalized with 4-mercaptobenzoic acid (4-MBA), which showed the improved catalytic performance for sensitive and selective determination of bisphenol A (BPA) by differential pulse voltammetry. The oxidation peak currents of BPA at 514 mV showed linear responses to BPA concentrations from 0.05 to 55.0 μM (R 2 =0.995), with the detection limit of 1.2 nM (S/N=3). The modified electrode was extended for trace detection of BPA in (spiked) real samples with satisfied results.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrochemical determination of bisphenol A with a glassy carbon electrode modified with gold nanodendrites

et al. 2014

View full text Add to dashboard Cite

show abstract

“…In 2010, Chu and Lo [47] presented a modulation system for phase-resolved two-dimensional fluorescence phase imaging of a planar optical oxygen sensor. The proposed system is based on phase fluorometry technique and uses four-frame integrating-bucket method.…”

Section: Full-field Oxygen Sensingmentioning

confidence: 99%

Review on recent developments of fluorescent oxygen and carbon dioxide optical fiber sensors

Chu¹,

Lo²,

Sung³

2011

Photonic Sens

Self Cite

102

View full text Add to dashboard Cite

Oxygen and carbon dioxide sensors are involved in many chemical and biochemical reactions. Consequently, considerable efforts over years have been devoted to discover and improve suitable techniques for measuring gas concentrations by optical fiber sensors. Optical gas sensors consist of a gas-sensitive dye entrapped in a matrix with a high permeability to gas. With such sensors, gas concentration is evaluated based upon the reduction in luminescence intensity caused by gas quenching of the emitting state. However, the luminescence quenching effect of oxygen is highly sensitive to temperature. Thus, a simple, low-cost plastic optical fiber sensor for dual sensing of temperature and oxygen is presented. Also, a modified Stern-Volmer model is introduced to compensate for the temperature drift while the temperature is obtained by above dual sensor. Recently, we presented highly-sensitive oxygen and dissolved oxygen sensors comprising an optical fiber coated at one end with platinum (II) meso-tetrakis(pentafluorophenyl)porphyrin (PtTFPP) and PtTFPP entrapped core-shell silica nanoparticles embedded in an n-octyltriethoxysilane(Octyl-triEOS)/tetraethylorthosilane (TEOS) composite xerogel. Also, two-dimensional gas measurement for the distribution of chemical parameters in non-homogeneous samples is developed and is of interest in medical and biological researches.

show abstract

“…The higher photostability of 32 compared to 30 is explained by the electron-withdrawing character of the perfluorophenyl substituents which reduces the electron density on the porphyrin ring thus rendering the PtTFPP less reactive toward oxidation by singlet oxygen [134]. PtTFPP possesses similarly long decay time (60 μs) and acceptable brightness when excited in the visible rage; it has been widely used as oxygen indicator in different types of matrices such as polystyrene [5,134], fluoroacrylic polymer as a component of a pressure-sensitive paint [51,186], in sol-gel [44,45], poly(norobornene)s [213], and many other matrices. PtTFPP was also modified to be able to be polymerized and cross-linked with hydrophilic poly(2-hydroxyethyl methacrylate)-co-polyacrylamide or hydrophobic polystyrene to generate highly photostable and biocompatible sensing films [216].…”

Section: Metalloporphyrinsmentioning

confidence: 99%

Indicators for optical oxygen sensors

Borisov¹,

Quaranta²,

Klimant³

2012

Advances in Chemical Bioanalysis

View full text Add to dashboard Cite

Continuous monitoring of oxygen concentration is of great importance in many different areas of research which range from medical applications to food packaging. In the last three decades, significant progress has been made in the field of optical sensing technology and this review will highlight the one inherent to the development of oxygen indicators. The first section outlines the bioanalytical fields in which optical oxygen sensors have been applied. The second section gives the reader a comprehensive summary of the existing oxygen indicators with a critical highlight on their photophysical and sensing properties. Altogether, this review is meant to give the potential user a guide to select the most suitable oxygen indicator for the particular application of interest.

show abstract

2D full-field measurement of oxygen concentration based on the phase fluorometry technique that uses the four-frame integrating-bucket method

Cited by 10 publications

References 31 publications

Electrochemical determination of bisphenol A with a glassy carbon electrode modified with gold nanodendrites

Electrochemical determination of bisphenol A with a glassy carbon electrode modified with gold nanodendrites

Review on recent developments of fluorescent oxygen and carbon dioxide optical fiber sensors

Indicators for optical oxygen sensors

Contact Info

Product

Resources

About