Surface plasmon resonance properties and gas response in porphyrin Langmuir–Blodgett films

Kato, Keizo; Dooling, Colin M.; Shinbo, Kazunari; Richardson, T.; Kaneko, Futao; Tregonning, Rose; Vysotsky, Myroslav O.; Hunter, Chris

doi:10.1016/s0927-7757(01)01006-8

Cited by 44 publications

(21 citation statements)

References 11 publications

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“…Surface plasmon can be converted to far-field light by prism or surface roughness [8,9] and the phenomena can be used for developing optical devices and high-efficient organic light-emitting diodes [10][11][12]. Additionally, gas sensors and bio sensors [13][14][15][16] can be developed, since the thickness and/or dielectric constants of thin films sensitively affects the excitation conditions. The Kretschmann configuration [1], for example a glass prism / metal film / dielectric fihn structure, is usually used for SP excitation.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous detection of ammonia and water vapors using surface plasmon resonance waveguide sensor

Komai

Honda

Baba

et al. 2014

Proceedings of 2014 International Symposium on Electrical Insulating Materials

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A waveguide-based SPR sensor for double analyte detections was prepared with a single waveguide, and sensing for ammonia and water vapors were carried out. A BK-7 slide glass was used as a waveguide core, and two pairs of Ag films (50 nm) / sensing polymer films with different thicknesses were prepared separately on the waveguide. White light was input from the substrate edge, and the output light spectrum was observed. SPR dips can be separately observed in the output light spectra by selecting the thickness of the polymer film, which govern the SPR condition. Poly(acrylic acid) (PAA) and poly(vinyl alcohol) (PVA) were used as sensing material. PAA responded to both of water and ammonia vapors, and PV A mainly responded to water vapor. Simultaneous measurement would enable precise ammonia measurement under various humidities.

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Section: Introductionmentioning

confidence: 99%

Simultaneous detection of ammonia and water vapors using surface plasmon resonance waveguide sensor

Komai

Honda

Baba

et al. 2014

Proceedings of 2014 International Symposium on Electrical Insulating Materials

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“…In order to use metallic nanoparticles for sensing purposes, a number of different approaches have been demonstrated for immobilization of different molecules on the metal surfaces, such as physical adsorption [8,9], embedding in polymers [10], self-assembly [11,12], or Langmuir-Blodgett deposition [13]. Among them, use of self-assembly monolayers (SAMs) for coating metal surfaces before immobilization is of considerable interest because they help to minimize the non-specific adsorption problem and to introduce reactive groups for specific immobilization [7].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of near infrared gas sensing using gold nanodisks on functionalized silicon

Rodríguez-Cantó¹,

Martínez-Marco²,

Rodríguez-Fortuño³

et al. 2011

Opt. Express

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Abstract:In this work, we demonstrate experimentally the use of an array of gold nanodisks on functionalized silicon for chemosensing purposes. The metallic nanostructures are designed to display a very strong plasmonic resonance in the infrared regime, which results in highly sensitive sensing. Unlike usual experiments which are based on the functionalization of the metal surface, we functionalized here the silicon substrate. This silicon surface was modified chemically by buildup of an organosilane selfassembled monolayer (SAM) containing isocyanate as functional group. These groups allow for an easy surface regeneration by simple heating, thanks to the thermally reversible interaction isocyanate-analyte, which allows the cyclic use of the sensor. The technique showed a high sensitivity to surface binding events in gas and allowed the surface regeneration by heating of the sensor at 150°C. A relative wavelength shift ∆λ max /λ 0 = 0.027 was obtained when the saturation level was reached. 191-198 (2009). 17. K. Suyama, H. Iriyama, M. Shirai, and M. Tsunooka, "Curing systems using photolysis of carbamoyloxyimino groups and thermally regenerated isocyanate groups," J. ©2011 Optical Society of America

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“…4 Some other sensitive methods, involving radioimmunoassay (RIA) 5 and enzyme linked immunosorbent assay (ELISA), 6 may be inconvenient because of sophisticated instrumentation and timeconsuming steps. Biomolecules can be immobilized through physical adsorption, 14,15 covalent bond, 16,17 self-assembly, [18][19][20] Langmuir-Blodgett deposition 21,22 and entrapment within a membrane of polymer [23][24][25] or sol-gel. Electrochemical immunoassay with the features of low cost as well as high sensitivity are now used frequently in the clinical determinations of disease markers [7][8][9] and two kinds of sensitive electrochemical immunosensors for the direct determination of LDL was developed.…”

Section: Introductionmentioning

confidence: 99%

Room-temperature ionic liquid assisted fabrication of sensitive electrochemical immunosensor based on ordered macroporous gold film

Chen

Zhou

Xuan

et al. 2010

Analyst

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A novel label-free highly sensitive electrochemical impedance spectroscopy (EIS) immunosensor was fabricated based on the highly ordered macroporous gold film (HOMGF) in the presence of room-temperature ionic liquid (IL) for the detection of human Apolipoprotein B-100 (ApoB-100). The antibody of ApoB-100 (Ab) was adsorbed directly onto the HOMGF electrode surface and maintained its bioactivity. After the residual active sites at the electrode were passivated by BSA, the mixture of BMIm(+)BF(4)(-) and silica sol was dropped onto the electrode to entrap the adsorbed Ab and BSA molecules firmly. The addition of IL could prevent the inactivation of Ab by releasing alcohol during the sol-gel process, and the conductivity of the IL-gel membrane was increased. Of particular interest is the fact that the fabricated immunosensor could be used at 60 °C. This could be attributed to the interconnected porosity of the IL-gel membrane, which can prevent Ab from unfolding and losing its bioactivities. The immunosensor also exhibited a highly sensitive response to ApoB-100 with the lowest concentration of 5 fg mL(-1). The detection of ApoB-100 levels in five sera samples obtained from hospital showed acceptable accuracy with that using commercial immunonephelometry method.

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Surface plasmon resonance properties and gas response in porphyrin Langmuir–Blodgett films

Cited by 44 publications

References 11 publications

Simultaneous detection of ammonia and water vapors using surface plasmon resonance waveguide sensor

Simultaneous detection of ammonia and water vapors using surface plasmon resonance waveguide sensor

Demonstration of near infrared gas sensing using gold nanodisks on functionalized silicon

Room-temperature ionic liquid assisted fabrication of sensitive electrochemical immunosensor based on ordered macroporous gold film

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