Substituted 3,3-diphenylphthalides as optochemical sensors for polar solvent vapors

Dickert, Franz L.; Lehmann, E.; Schreiner, Serge; Kimmel, H.; Mages, G.

doi:10.1021/ac00165a005

Cited by 37 publications

(13 citation statements)

References 9 publications

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“…An optical sensor based on bis(phenol) as acid and H + -42 as base was found to respond to various polar solvents (ethanol, methanol, ethyl acetate, acetone) …”

Section: Sensors For Alcohols and Nonionic Surfactantsmentioning

confidence: 99%

“…An optical sensor based on bis(phenol) as acid and H + -42 as base was found to respond to various polar solvents (ethanol, methanol, ethyl acetate, acetone). 1039 It was suggested that these alcohols disturb the hydrogen bond network of bis(phenol) and H + -42 but a carrier mechanism in a narrow sense is not evident. Formation of the hemiacetal of the trifluoroacetophenone derivative ALC-1 by reaction with ethanol leads to loss in electron delocalization between the trifluoroacetyl and benzene group and results in a large hypsochromic shift of the absorption band of ALC-1.…”

Section: Sensors For Alcohols and Nonionic Surfactantsmentioning

confidence: 99%

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Carrier-Based Ion-Selective Electrodes and Bulk Optodes. 2. Ionophores for Potentiometric and Optical Sensors

1998

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and 1991, respectively. He has been working in the field of chemical sensors since 1970. Further topics of his interest are spectroscopic databases, automatic spectra interpretation, and modeling of structure−property relationships. He has published over 180 papers and 7 books. Current activities in the fields of chemical sensors and computer-aided analytical chemistry are documented on the web page http://www/ceac.ethz.ch/pretsch/. His e-mail address is pretsch@ org.chem.ethz.ch.

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“…An optical sensor based on bis(phenol) as acid and H + -42 as base was found to respond to various polar solvents (ethanol, methanol, ethyl acetate, acetone) …”

Section: Sensors For Alcohols and Nonionic Surfactantsmentioning

confidence: 99%

Section: Sensors For Alcohols and Nonionic Surfactantsmentioning

confidence: 99%

Carrier-Based Ion-Selective Electrodes and Bulk Optodes. 2. Ionophores for Potentiometric and Optical Sensors

1998

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“…Certain triphenylmethane dyes, in combination with an acidic component such as bisphenol A, have an intense blue color that is decolorized in the presence of vapors of polar solvents (Dickert et al 1988). The sensing layer was prepared by dissolving the lactone form of the dye and bisphenol A in polyvinyl chloride and casting it as a l-_tm layer on a solid support.…”

Section: Solvent Vaporsmentioning

confidence: 99%

Performance specifications for technology development: Application for characterization of volatile organic compounds in the environment

Carpenter¹,

Doskey²,

Erickson³

et al. 1994

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“…Various types of chemically sensitive optical beads are available using optode chemistries and can be made with sensitivity to different ionic species and other analytes including sodium[ 17 ], potassium [ 17 ], ammonia [ 18 ], sulfur dioxide [ 19 ], hydrogen sulfide [ 20 ], ethanol [ 21 ], acetone [ 21 ], oxygen [ 22 , 23 ], carbon dioxide [ 24 ], and metabolites such as glucose [ 25 ]. This enables OBCI to be applied to study a variety of processes.…”

Section: Introductionmentioning

confidence: 99%

Functional Imaging of Chemically Active Surfaces with Optical Reporter Microbeads

et al. 2015

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We have developed a novel approach to allow for continuous imaging of concentration fields that evolve at surfaces due to release, uptake, and mass transport of molecules, without significant interference of the concentration fields by the chemical imaging itself. The technique utilizes optical “reporter” microbeads immobilized in a thin layer of transparent and inert hydrogel on top of the surface. The hydrogel has minimal density and therefore diffusion in and across it is like in water. Imaging the immobilized microbeads over time provides quantitative concentration measurements at each location where an optical reporter resides. Using image analysis in post-processing these spatially discrete measurements can be transformed into contiguous maps of the dynamic concentration field across the entire surface. If the microbeads are small enough relative to the dimensions of the region of interest and sparsely applied then chemical imaging will not noticeably affect the evolution of concentration fields. In this work colorimetric optode microbeads a few micrometers in diameter were used to image surface concentration distributions on the millimeter scale.

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Substituted 3,3-diphenylphthalides as optochemical sensors for polar solvent vapors

Cited by 37 publications

References 9 publications

Carrier-Based Ion-Selective Electrodes and Bulk Optodes. 2. Ionophores for Potentiometric and Optical Sensors

Carrier-Based Ion-Selective Electrodes and Bulk Optodes. 2. Ionophores for Potentiometric and Optical Sensors

Performance specifications for technology development: Application for characterization of volatile organic compounds in the environment

Functional Imaging of Chemically Active Surfaces with Optical Reporter Microbeads

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