Sol–gel immobilised ruthenium(II) polypyridyl complexes as chemical transducers for optical pH sensing

Malins, Chris; Glever, H.G; Keyes, Tia E.; Vos, Johannes G.; Dressick, Walter J.; MacCraith, Brian D.

doi:10.1016/s0925-4005(00)00411-1

Cited by 98 publications

(63 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[176,181] One important task in chemical sensing is the development of suitable immobilizing matrices for the dopants. Many studies have showed that sol±gel processing parameters, such as water/silane ratio, humidity, and catalyst, [178,196] control the cage surface properties and thus affect the performance of the sensing dopant. In some cases, sol± gel immobilization effectively enhanced the operating range of the probe compared to solution.…”

Section: Hybrid Optical Sensorsmentioning

confidence: 99%

Optical Properties of Functional Hybrid Organic–Inorganic Nanocomposites

et al. 2003

View full text Add to dashboard Cite

Functional hybrids are nanocomposite materials lying at the interface of organic and inorganic realms, whose high versatility offers a wide range of possibilities to elaborate tailor‐made materials in terms of chemical and physical properties. Because they present several advantages for designing materials for optical applications (versatile and relatively facile chemistry, easy shaping and patterning, materials having good mechanical integrity and excellent optical quality), numerous silica or/and siloxane based hybrid organic–inorganic materials have been developed in the past few years. The most striking examples of functional hybrids exhibiting emission properties (solid‐state dye lasers, rare‐earth doped hybrids, electroluminescent devices), absorption properties (photochromic), nonlinear optical (NLO) properties (second‐order NLO properties, photochemical hole burning (PHB), photorefractivity), and sensing are summarized in this review.

show abstract

Section: Hybrid Optical Sensorsmentioning

confidence: 99%

Optical Properties of Functional Hybrid Organic–Inorganic Nanocomposites

et al. 2003

View full text Add to dashboard Cite

show abstract

“…50 Fluorescent dyes such as phenol red, fluorescein, lhydroxypyrene-3,6,8-trisulfonate (HPTS), 8-hydroxyl-1,3,6-pyrene trisulphonic acid trisodium salt (HOPSA) have been used in optical devices for the online monitoring of pH values and dissolved carbon dioxide. 24,48,80,84 HPTS dyes and their modified variants have been widely used in cell culture media due to its low sensitivity to dissolved oxygen, ability to measure physiologically relevant pH and low toxicity. The dye exhibits a shift in maximum excitation from UV (405 nm) in acidic medium to blue (465 nm) in basic media.…”

Section: Fluorescent Dyesmentioning

confidence: 99%

Enabling Sensor Technologies for the Quantitative Evaluation of Engineered Tissue

Starly

Choubey

2007

Ann Biomed Eng

View full text Add to dashboard Cite

Research in regenerative medicine has necessitated the need for advanced sensing technologies to monitor and evaluate the quality of engineered tissues. Several sensing schemes have been developed to sense specific analytes that enable researchers to assess tissue morphology, growth, and function. In addition to microscopy and staining techniques, tissue engineers are presented with an array of optical, chemical, and biological sensor technologies, which provide them with an opportunity to monitor variables, such as oxygen concentration, pH value, carbon dioxide, and glucose concentration in a noninvasive or minimally invasive manner. The article presents a short description on the core technologies and research reviews on the use of sensors employed in tissue engineering over the past decade. The article concludes by presenting some of the challenges to the further development of these technologies that are capable of real time measurement of tissue structure, composition, and function both for in-vitro and in-vivo analysis.

show abstract

“…156 They prepared a pH sensitive silica gel by the covalent attachment of an anthracene fluorophore to the surface of silica. Also pyrene for oxygen sensitivity, 157 fluorescein isocyanate for fluorometric pH measurements, 155 ruthenium complexes for oxygen 158,159 or for pH sensing 160 have been covalently attached to sol-gel glass films. However, doping is actually the most common method for entrapment of the fluorophore in the glass.…”

Section: Sol-gel Materialsmentioning

confidence: 99%

Design of Fluorescent Materials for Chemical Sensing

2007

View full text Add to dashboard Cite

There is an enormous demand for chemical sensors for many areas and disciplines. High sensitivity and ease of operation are two main issues for sensor development. Fluorescence techniques can easily fulfill these requirements and therefore fluorescent-based sensors appear as one of the most promising candidates for chemical sensing. However, the development of sensors is not trivial; material science, molecular recognition and device implementation are some of the aspects that play a role in the design of sensors. The development of fluorescent sensing materials is increasingly captivating the attention of the scientists because its implementation as a truly sensory system is straightforward. This critical review shows the use of polymers, sol-gels, mesoporous materials, surfactant aggregates, quantum dots, and glass or gold surfaces, combined with different chemical approaches for the development of fluorescent sensing materials. Representative examples have been selected and they are commented here.

show abstract

Sol–gel immobilised ruthenium(II) polypyridyl complexes as chemical transducers for optical pH sensing

Cited by 98 publications

References 30 publications

Optical Properties of Functional Hybrid Organic–Inorganic Nanocomposites

Optical Properties of Functional Hybrid Organic–Inorganic Nanocomposites

Enabling Sensor Technologies for the Quantitative Evaluation of Engineered Tissue

Design of Fluorescent Materials for Chemical Sensing

Contact Info

Product

Resources

About