Photostable Optical Oxygen Sensing Material: Platinum Tetrakis(pentafluorophenyl)porphyrin Immobilized in Polystyrene

Lee, Sangkyung; Okura, Ichiro

doi:10.1039/a701130j

Cited by 199 publications

(122 citation statements)

References 16 publications

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“…[6,11,12,19] The dyes are attractive due to their long s 0 , which ensures high detection sensitivity. For example, s 0 (PtOEP) ∼ 100 ls and s 0 (PdOEP) ∼ 1 ms. [6,11,12,19] Matrices in which the oxygen-sensitive dyes are embedded are also important in shaping the sensor performance. To ensure high sensitivities and fast response times, the matrix should be highly permeable to oxygen, but it should also entrap the dye so that its leaching is avoided.…”

Section: Sensing Filmsmentioning

confidence: 99%

Enhanced Photoluminescence of Oxygen Sensing Films through Doping with High Dielectric Constant Particles

Zhou

Shinar

Allison³

et al. 2007

Adv Funct Materials

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A uniquely simple approach to increase the intensity of the photoluminescence (PL) of dye‐doped sensor films is demonstrated for oxygen sensors, where the sensor film, i.e., Pt or Pd octaethylporphyrin (PtOEP or PdOEP, respectively)‐doped polystyrene, is additionally doped with small‐size particles that have a high dielectric constant, such as 360 nm‐diameter titania (TiO2) particles. When excited by an organic light emitting device (OLED), the dye PL intensity increases up to ∼ 10 fold, depending on the TiO2 concentration and the excitation source. The enhanced PL is attributed to light scattering by the embedded particles and possibly by voids in the film. The particles scatter the light that excites the PL, increasing the optical path of the exciting light and consequently the absorption of that light and the PL. The particles can also result in an increase in the PL outcoupling, reducing waveguiding to the film edges. The increased PL results in an improved signal‐to‐noise (S/N) ratio in oxygen monitoring, without any deterioration or change in the response time or the long‐term stability of the sensor films. In addition, at a given O2 level, the dye PL decay time τ increases in the presence of the particles, but is independent of their concentration in the measured range. The improved S/N can improve the analyte limit of detection, allow shortened data acquisition times, and enable the use of low‐intensity excitation sources to minimize potential dye photobleaching. In particular, it improves the performance of structurally integrated OLED‐based chemical and biological sensors, which are drawing increasing attention due to their uniquely simple and flexible integration geometry.

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Section: Sensing Filmsmentioning

confidence: 99%

Enhanced Photoluminescence of Oxygen Sensing Films through Doping with High Dielectric Constant Particles

Zhou

Shinar

Allison³

et al. 2007

Adv Funct Materials

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“…[11][12][13][14] The Pt II and Pd II complexes of 5,10,15,20-tetrakis(2,3,4,5,6-pentafluoro phenyl) porphyrin (TFPP) possess excellent photostability [15,16] and high phosphorescence quantum yield. [17] The sensitivity range can be tuned by employing either Pd II or Pt II metalloporphyrins, and by using polymers with various degrees of oxygen permeability.…”

Section: Introductionmentioning

confidence: 99%

Composite Luminescent Material for Dual Sensing of Oxygen and Temperature

Borisov

Vasylevska

Krause

et al. 2006

Adv Funct Materials

179

137

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A novel kind of composite material is presented that contains two indicators incorporated into a single polymer matrix, thus allowing simultaneous determination of oxygen partial pressure and temperature. The temperature‐sensitive dye (ruthenium tris‐1,10‐phenanthroline) was chosen for its highly temperature‐dependent luminescence which is the highest among the RuII polypyridyl complexes. A fluorinated palladium(II) tetraphenylporphyrin served as the oxygen probe. The indicators were incorporated into either poly(styrene‐co‐acrylonitrile) microparticles (to sense oxygen) or into poly(acrylonitrile) (for temperature sensing, since this polymer is virtually impermeable to oxygen). The luminescence of both dyes can be separated either spectrally (due to different absorption and emission spectra of the indicators) or via luminescence decay time. The material is suitable for temperature‐compensated oxygen sensing, for example, in high‐resolution oxygen profiling, and for imaging temperature in the range between 0 and 60 °C. This enables one to “see” (rather than to “feel”) temperature in this important range. Simultaneous imaging of pressure and temperature also has been achieved. It enables contactless imaging of the two parameters, for example, in wind tunnels. Due to the use of a biocompatible hydrogel matrix, the material conceivably is suited for biomedical applications.

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“…This is at least as reliable as the longest lived uorescent devices employing all the same materials except PtOEP. Another study [42] has identi®ed a derivative of PtOEP for oxygen sensing applications, where long operational lifetimes are required in relatively uncontrolled environments.…”

Section: Reliability Of Phosphorescent Oledsmentioning

confidence: 99%

Phosphorescent materials for application to organic light emitting devices

Baldo¹,

Thompson²,

Forrest³

1999

Pure and Applied Chemistry

385

207

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Organic phosphors have demanded the attention of the organic electroluminescence community because they enable ef®ciencies quadruple that of¯uorescent materials. In this work, we review the categories of organic phosphors: lanthanide complexes, organic phosphors and metal-organic complexes. The characteristics necessary for ef®cient phosphorescence are considered and conclusions are drawn as to the most promising materials.

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Photostable Optical Oxygen Sensing Material: Platinum Tetrakis(pentafluorophenyl)porphyrin Immobilized in Polystyrene

Cited by 199 publications

References 16 publications

Enhanced Photoluminescence of Oxygen Sensing Films through Doping with High Dielectric Constant Particles

Enhanced Photoluminescence of Oxygen Sensing Films through Doping with High Dielectric Constant Particles

Composite Luminescent Material for Dual Sensing of Oxygen and Temperature

Phosphorescent materials for application to organic light emitting devices

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