Spectroscopic studies and evanescent optical fibre wave sensing of Cu2+ based on activated mesostructured silica matrix

Miled, Othman Belhadj; Sánchez, Clément; Livage, Jacques

doi:10.1007/s10853-005-1135-4

Cited by 8 publications

(7 citation statements)

References 25 publications

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“…Moreover, thin films synthesized without surfactants present a very low quenching efficiency proving then the importance of the mesostructure on the detection ability. Optical sensors based on hybrid POMTFs of >class I were also reported for the detection of Cu 2+ in the aqueous phase, , the determination of pH, and the detection of methanol vapor . Surprisingly, for these sensors of class I working in aqueous media, the leaching of the dyes was hardly observed.…”

Section: Properties Of Thin Films and Potential Applicationsmentioning

confidence: 99%

“…Surprisingly, for these sensors of class I working in aqueous media, the leaching of the dyes was hardly observed. This could be explained by their solubilization in the micelles of surfactant. – Although hybrid POMTFs functionalized with dyes are the most common optical sensors reported in the literature, some authors investigated other ways. For example, Goettmann et al , encapsulated phosphine-stabilized gold nanoparticles inside silica POMTFs.…”

Section: Properties Of Thin Films and Potential Applicationsmentioning

confidence: 99%

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Design, Synthesis, and Properties of Inorganic and Hybrid Thin Films Having Periodically Organized Nanoporosity

et al. 2008

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This review presents an extensive discussion on the major advances in the field of periodically organized mesoporous thin films (POMTFs) obtained via surfactant templated growth of inorganic or hybrid polymers. A large variety of templating agents can be coupled with inorganic polymerization reactions for the design of periodically organized nanostructured hybrid phases that yield POMTFs. The tuning of the interface between the template and the polymerizing phase and the control over chemical and processing conditions are the key parameters in producing tailor-made POMTFs with a high degree of reproducibility. This dynamic coupling between chemical and processing conditions dictates extensive use of complementary ex situ measurements with in situ characterization techniques that follow, in real time, film formation from the molecular precursor solutions to the final stabilized POMTF. Among modern analytical tools, 2D-GISAXS, ellipsoporosimetry, HRTEM, X-ray reflectometry, WAXS, time-resolved infrared spectroscopy, SAW, and optically polarized xenon NMR have proved to be highly relevant for this purpose. POMTFs combine the intrinsic physical and chemical properties of the inorganic or hybrid matrices with a highly defined nanoporous network having a tunable pore size and connectivity, high surface area and accessibility, and a specific orientation with respect to the substrate. As such, POMTFs are a promising family of advanced materials for a host of future applications including micro-optics and photonic devices, microelectronics, nanoionics and energy, environment, functional and protective coatings, biomaterials, environmentally responsive materials, and biomicrofluidics, among others.

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Section: Properties Of Thin Films and Potential Applicationsmentioning

confidence: 99%

Section: Properties Of Thin Films and Potential Applicationsmentioning

confidence: 99%

Design, Synthesis, and Properties of Inorganic and Hybrid Thin Films Having Periodically Organized Nanoporosity

et al. 2008

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“…For example Eriochrome cyanine R, an hydrophilic dye bearing a sulfonate group, was successfully immobilised, following a ''one-pot'' procedure, in POMTFs due to ion-pair interactions with the quaternary ammonium head groups of surfactant. 18 The location of the ECR dye at the aqueous interface allowed an easy detection of copper ions while the strong ion-pair interactions hindered dye leaching.…”

Section: Strategies Of Synthesis and Doping Of Sol-gel Materials 31 M...mentioning

confidence: 99%

Optical chemical sensors based on hybrid organic–inorganic sol–gel nanoreactors

et al. 2011

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Sol-gel porous materials with tailored or nanostructured cavities have been increasingly used as nanoreactors for the enhancement of reactions between entrapped chemical reactants. The domains of applications issued from these designs and engineering are extremely wide. This tutorial review will focus on one of these domains, in particular on optical chemical sensors, which are the subject of extensive research and development in environment, industry and health.

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“…Although both silicates had three-dimensional mesopore systems, the ordered material had a lower limit of detection of 9 × 10 -9 M as well as a significantly faster response time and higher diffusion coefficient. Encapsulation of eriochrome cyanine R has been used for evanescent wave based detection of Cu 2+ with a detection limit of 5 × 10 -5 M [58]. …”

Section: Metal Cation Sensorsmentioning

confidence: 99%

Mesoporous Silicate Materials in Sensing

Melde

Johnson

Charles

2008

Sensors

237

115

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Mesoporous silicas, especially those exhibiting ordered pore systems and uniform pore diameters, have shown great potential for sensing applications in recent years. Morphological control grants them versatility in the method of deployment whether as bulk powders, monoliths, thin films, or embedded in coatings. High surface areas and pore sizes greater than 2 nm make them effective as adsorbent coatings for humidity sensors. The pore networks also provide the potential for immobilization of enzymes within the materials. Functionalization of materials by silane grafting or through co-condensation of silicate precursors can be used to provide mesoporous materials with a variety of fluorescent probes as well as surface properties that aid in selective detection of specific analytes. This review will illustrate how mesoporous silicas have been applied to sensing changes in relative humidity, changes in pH, metal cations, toxic industrial compounds, volatile organic compounds, small molecules and ions, nitroenergetic compounds, and biologically relevant molecules.

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Spectroscopic studies and evanescent optical fibre wave sensing of Cu2+ based on activated mesostructured silica matrix

Cited by 8 publications

References 25 publications

Design, Synthesis, and Properties of Inorganic and Hybrid Thin Films Having Periodically Organized Nanoporosity

Design, Synthesis, and Properties of Inorganic and Hybrid Thin Films Having Periodically Organized Nanoporosity

Optical chemical sensors based on hybrid organic–inorganic sol–gel nanoreactors

Mesoporous Silicate Materials in Sensing

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