Search Results - "Kumke, Michael"

Upconversion Luminescence Properties of NaYF4:Yb:Er Nanoparticles Codoped with Gd3 by Klier, Dennis T, Kumke, Michael U

“…The temperature-dependent upconversion luminescence of NaYF4:Yb:Er nanoparticles (UCNP) containing different contents of Gd3+ as additional dopant was…”
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Spectroscopic characterization of europium binding to a calmodulin-EF4 hand peptide-polymer conjugate by Marlina, Dini, Müllers, Yannic, Glebe, Ulrich, Kumke, Michael U

“…The emergence of biological ligand as an alternative to chemical ligands enables a sustainable lanthanide extraction route. In this study, a peptide…”
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Tracking the Motion of Lanthanide Ions within Core–Shell–Shell NaYF4 Nanocrystals via Resonance Energy Transfer by Bastian, Philipp U, Nacak, Selma, Roddatis, Vladimir, Kumke, Michael U

“…Lanthanide resonance energy transfer (LRET) was used to investigate the motion of dopant ions during the synthesis of core–shell–shell nanocrystals (NCs) that…”
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Ceria nanomaterials containing ytterbium: low and high concentration - luminescence analyzed in the near infrared region by Chemura, Sitshengisiwe, Schrumpf, Tim, Günter, Christina, Kumke, Michael U

“…Lanthanide based ceria nanomaterials are important practical materials due to the redox properties that are useful in the avenues pertaining to technology and…”
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pH-Sensitive Fluorescence Switching of Pyridylanthracenes: The Effect of the Isomeric Pattern by Haubitz, Toni, Fudickar, Werner, Linker, Torsten, Kumke, Michael U

“…9,10-substituted anthracenes are known for their useful optical properties like fluorescence, which makes them frequently used probes in sensing applications…”
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Investigating the Sulfur "Twist" on the Photophysics of DBD Dyes by Haubitz, Toni, John, Leonard, Freyse, Daniel, Wessig, Pablo, Kumke, Michael U

“…The so-called DBD ([1,3]dioxolo[4,5- ][1,3]benzodioxole) dyes are a new class of fluorescent dyes, with tunable photophysical properties like absorption,…”
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Quenching Mechanism of Uranyl(VI) by Chloride and Bromide in Aqueous and Non-Aqueous Solutions by Haubitz, Toni, Drobot, Björn, Tsushima, Satoru, Steudtner, Robin, Stumpf, Thorsten, Kumke, Michael U

“…A major hindrance in utilizing uranyl­(VI) luminescence as a standard analytical tool, for example, in environmental monitoring or nuclear industries, is…”
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Photophysics of Acyl- and Ester-DBD Dyes: Quadrupole-Induced Solvent Relaxation Investigated by Transient Absorption Spectroscopy by Haubitz, Toni, John, Leonard, Wessig, Pablo, Kumke, Michael U

“…A new generation of wavelength-tunable, fluorescent dyes, so-called DBD ([1,3]­dioxolo­[4,5-f]­[1,3]­benzodioxole) dyes, were developed a few years ago, and…”
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Selective and pH‐Independent Detection of Ba2+ in Water by a Benzo‐21‐crown‐7‐Functionalized BODIPY by Sprenger, Tobias, Schwarze, Thomas, Müller, Holger, Sperlich, Eric, Holdt, Hans‐Jürgen, Nazaré, Marc, Hentsch, Axel, Eidner, Sascha, Kraft, Ronja, Kumke, Michael U.

“…Herein, we report on highly Ba2+ selective fluorescence sensing in water by a fluorescent probe consisting of a benzo‐21‐crown‐7 as a Ba2+ binding unit…”
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Bioinspired Confinement of Upconversion Nanoparticles for Improved Performance in Aqueous Solution by Bastian, Philipp U, Yu, Leixiao, López de Guereñu, Anna, Haag, Rainer, Kumke, Michael U

“…The resonance energy transfer (RET) from NaYF4:Yb,Er upconverting nanoparticles (UNCPs) to a dye (5-carboxytetramethylrhodamine (TAMRA)) was investigated by…”
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Optical In Situ Monitoring of Acid Mine Drainage Remediation: Laboratory and Model Investigation by Reuß, Maximilian, Oswald, Sascha E., Munz, Matthias, Kumke, Michael U.

“…A permeable reactive barrier (PRB) can be deployed to remediate acid mine drainage. The performance of a PRB material under different boundary conditions (pH,…”
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Europium-Doped Ceria–Gadolinium Mixed Oxides: PARAFAC Analysis and High-Resolution Emission Spectroscopy under Cryogenic Conditions for Structural Analysis by Chemura, Sitshengisiwe, Haubitz, Toni, Primus, Philipp A., Underberg, Martin, Hülser, Tim, Kumke, Michael U.

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Rigid Rod-Based FRET Probes for Membrane Sensing Applications by Eisold, Ursula, Behrends, Nicole, Wessig, Pablo, Kumke, Michael U

“…Oligospirothioketal (OSTK) rods are presented as an adjustable scaffold for optical membrane probes. The OSTK rods are readily incorporated into lipid bilayers…”
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FRET Pairs with Fixed Relative Orientation of Chromophores by Wessig, Pablo, Behrends, Nicole, Kumke, Michael U., Eisold, Ursula

“…Synthetic routes to different oligospirothioketal (OSTK) Förster resonance energy transfer (FRET) constructs are described and the photophysics of these…”
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Insight into the Modification of Polymeric Micellar and Liposomal Nanocarriers by Fluorescein-Labeled Lipids and Uptake-Mediating Lipopeptides by Draffehn, Sören, Eichhorst, Jenny, Wiesner, Burkhard, Kumke, Michael U

“…Encapsulation of diagnostic and therapeutic compounds in transporters improves their delivery to the point of need. An even more efficient treatment of…”
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Monitoring the Collapse of pH-Sensitive Liposomal Nanocarriers and Environmental pH Simultaneously: A Fluorescence-Based Approach by Draffehn, Sören, Kumke, Michael U

“…Nowadays, the encapsulation of therapeutic compounds in so-called carrier systems is a very smart method to achieve protection as well as an improvement of…”
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Intramolecular deactivation processes of electronically excited Lanthanide(III) complexes with organic acids of low molecular weight by Burek, Katja, Eidner, Sascha, Kuke, Stefanie, Kumke, Michael U.

“…The luminescence of Lanthanide(III) complexes with different model ligands was studied under direct as well as sensitized excitation conditions. The research…”
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Ultrafast Transient Absorption Spectroscopy of UO 2 2+ and [UO 2 Cl] by Haubitz, Toni, Tsushima, Satoru, Steudtner, Robin, Drobot, Björn, Geipel, Gerhard, Stumpf, Thorsten, Kumke, Michael U

“…For the only water coordinated "free" uranyl(VI) aquo ion in perchlorate solution we identified and assigned several different excited states and showed that…”
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Fluorescence study of drug–carrier interactions in CTAB/PBS buffer model systems by Techen, Anne, Hille, Carsten, Dosche, Carsten, Kumke, Michael U.

“…[Display omitted] ► CTAB micelles in PBS buffer characterized by ensemble as well as single molecule fluorescence techniques. ► Results show no distinct effect…”
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Oxazine dye-conjugated dna oligonucleotides: Förster resonance energy transfer in view of molecular dye-DNA interactions by Kupstat, Annette, Ritschel, Thomas, Kumke, Michael U

“…In this work, the photophysical properties of two oxazine dyes (ATTO 610 and ATTO 680) covalently attached via a C6-amino linker to the 5'-end of short…”
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