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Luminescent TOP Nanosensors for Simultaneously Measuring Temperature, Oxygen, and pH at a Single Excitation Wavelength

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2019

Autor:innen

Otto, Sven
Dorn, Matthias
Heinze, Katja
Resch-Genger, Ute

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https://doi.org/10.1021/acs.analchem.8b05060
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Deutsche Forschungsgemeinschaft (DFG): RE 1203/23- 1
Deutsche Forschungsgemeinschaft (DFG): GSC 266
Deutsche Forschungsgemeinschaft (DFG): HE 2778/10-1

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Published

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Analytical Chemistry. ACS Publications. 2019, 91(3), S. 2337-2344. ISSN 0003-2700. eISSN 1520-6882. Verfügbar unter: doi: 10.1021/acs.analchem.8b05060

Zusammenfassung

Two nanosensors for simultaneous optical measurements of the bioanalytically and biologically relevant analytes temperature (“T”), oxygen (“O”), and pH (“P”) have been designed. These “TOP” nanosensors are based on 100 nm-sized silica-coated polystyrene nanoparticles (PS-NPs) doped with a near-infrared emissive oxygen- and temperature-sensitive chromium(III) complex ([Cr(ddpd)2][BPh4]3, CrBPh4) and an inert reference dye (Nile Red, NR or 5,10,15,20-tetrakis(pentafluorophenyl) porphyrin, TFPP) and are covalently labeled with pH-sensitive fluorescein isothiocyanate (FITC). These emitters can be excited at the same wavelength and reveal spectrally distinguishable emission bands, allowing for ratiometric intensity-based and time-resolved studies in the visible and near-infrared wavelength region. Studies in PBS buffer solutions and in a model body liquid demonstrate the applicability of these nanosensors for the sensitive luminescence readout of TOP simultaneously at the same spatialposition.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
540 Chemie

Schlagwörter

Dyes and pigments, Luminescence, Nanodevices, Nanoparticles, Sensors

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ISO 690WANG, Cui, Sven OTTO, Matthias DORN, Katja HEINZE, Ute RESCH-GENGER, 2019. Luminescent TOP Nanosensors for Simultaneously Measuring Temperature, Oxygen, and pH at a Single Excitation Wavelength. In: Analytical Chemistry. ACS Publications. 2019, 91(3), S. 2337-2344. ISSN 0003-2700. eISSN 1520-6882. Verfügbar unter: doi: 10.1021/acs.analchem.8b05060
BibTex
@article{Wang2019-02-05Lumin-74817,
  title={Luminescent TOP Nanosensors for Simultaneously Measuring Temperature, Oxygen, and pH at a Single Excitation Wavelength},
  year={2019},
  doi={10.1021/acs.analchem.8b05060},
  number={3},
  volume={91},
  issn={0003-2700},
  journal={Analytical Chemistry},
  pages={2337--2344},
  author={Wang, Cui and Otto, Sven and Dorn, Matthias and Heinze, Katja and Resch-Genger, Ute}
}
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