Frontispiece: Detection and Imaging of the Plant Pathogen Response by Near‐Infrared Fluorescent Polyphenol Sensors

Nißler, Robert; Müller, Andrea T.; Dohrman, Frederike; Kurth, Larissa; Li, Han; Cosio, Eric G.; Flavel, Benjamin S.; Giraldo, Juan Pablo; Mithöfer, Axel; Kruss, Sebastian

doi:10.1002/anie.202280262

Cited by 3 publications

(3 citation statements)

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“…Furthermore, we show that the photophysical properties of EB-NS are not diminished and they represent an extremely stable fluorophore. Improvements in the preparation of EB-NS could become very important for applications that require environmentally save materials in larger quantities such as precision agriculture or biomedical imaging [11,[59][60][61] .…”

Section: Discussionmentioning

confidence: 99%

Surfactant Assisted Exfoliation of Near Infrared Fluorescent Silicate Nanosheets

Hill

Abraham

Akhtar

et al. 2023

Preprint

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Fluorophores that emit light in the near infrared (NIR) are advantageous in photonics and imaging due to minimal light scattering, absorption, phototoxicity and autofluorescence in this spectral region. The layered silicate Egyptian Blue (CaCuSi4O10) emits as bulk material bright and stable fluorescence in the NIR and is a promising NIR fluorescent material for (bio)photonics. Here, we demonstrate a surfactant-based (mild) exfoliation procedure to produce nanosheets (EB-NS) of high monodispersity, heights down to 1 nm and diameters <20 nm in large quantities. The approach combines planetary ball milling, surfactant assisted bath sonication and centrifugation steps. It avoids the impurities that are typical for the harsh conditions of tip-sonication. Several solvents and surfactants were tested and we find the highest yield for sodium dodecyl benzyl sulfate (SDBS) and water. The NIR fluorescence emission (λem≈930-940 nm) is not affected by this procedure, is extremely stable and is not affected by quenchers. This enables the use of EB-NS for macroscopic patterning/barcoding of materials in the NIR. In summary, we present a simple and mild route to NIR fluorescent nanosheets that promise high potential as NIR fluorophores for optical applications.

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Section: Discussionmentioning

confidence: 99%

Surfactant Assisted Exfoliation of Near Infrared Fluorescent Silicate Nanosheets

Hill

Abraham

Akhtar

et al. 2023

Preprint

Self Cite

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show abstract

“…Commonly employed receptors range from small molecular probes including sulfonated aromatic compounds to nucleic acids and other macromolecules. 45–48 Key advantages of these chemical analyte capturing strategies include (1) increased signal sensitivity, (2) selective metabolite isolation and detection in complex sample matrices and (3) accurate differentiation of structurally similar analogs such as enantiomers.…”

Section: Designer Nanosensor Platform Configurationsmentioning

confidence: 99%

“…2Aii ). 45 These interactions render the modified SWCNTs highly sensitive to plant polyphenol detection via near-infrared fluorescence quenching in a low μg mL −1 range, even in plant tissue extracts and culture media ( Fig. 2Aiii ).…”

Section: Designer Nanosensor Platform Configurationsmentioning

confidence: 99%