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133 results on '"Kapusta, Peter"'

8. Superradiant Emission from Coherent Excitons in van Der Waals Heterostructures

Author

Haider, Golam, primary, Sampathkumar, Krishna, additional, Verhagen, Tim, additional, Nádvorník, Lukáš, additional, Sonia, Farjana J., additional, Valeš, Václav, additional, Sýkora, Jan, additional, Kapusta, Peter, additional, Němec, Petr, additional, Hof, Martin, additional, Frank, Otakar, additional, Chen, Yang‐Fang, additional, Vejpravová, Jana, additional, and Kalbáč, Martin, additional

Published
2021
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10. Fluorescence lifetime multiplexing with nanocrystals and organic labels

Author

Grabolle, Markus, Kapusta, Peter, Nann, Thomas, Shu, Xu, Ziegler, Jan, and Resch-Genger, Ute

Subjects
Fluorescence -- Research, Nanocrystals -- Research, Chemistry
Abstract

The potential of semiconducting nanocrystals or so-called quantum dots (QDs) for lifetime multiplexing has not been investigated yet, despite the increasing use of QDs in (bio)analytical detection, biosensing, and fluorescence imaging and the obvious need for simple and cost-effective tools and strategies for the simultaneous detection of multiple analytes or events. This is most likely related to their multiexponential decay behavior as for multiplex chromophores, typically monoexponential decay kinetics are requested. The fluorescence decay kinetics of various mixtures of a long-lived, multiexponentially decaying CdSe QD and a short-lived organic dye were analyzed, and a model was developed for the quantification of these labels from the measured complex decay kinetics as a first proof-of-concept for the huge potential of these labels for lifetime multiplexing. In a second step, we evaluated the potential of mixtures of two types of QDs, varying in constituent material to realize distinguishable, yet multiexponential decay kinetics and similar absorption and emission spectra. Strategies for lifetime multiplexing with nanocrystalline labels were derived on the basis of these measurements.

Published
2009

17. Photophysics of 3-substituted benzanthrones: Substituent and solvent control of intersystem crossing

Author

Kapusta, Peter, Machalicky, Oldrich, Hrdina, Radim, Nepras, Milos, Zimmt, Matthew B., and Fidler, Vlastimil

Subjects
Chemistry, Physical and theoretical -- Research, Solvents -- Research, Excited state chemistry -- Research, Benzene -- Research, Benzene -- Chemical properties, Chemicals, plastics and rubber industries
Abstract

The solvent dependence of absorption and fluorescence spectra, fluorescence lifetimes, and quantum yields of various 3-substituted benzanthrone derivatives were investigated. The rate constant and efficiency of intersystem crossing between fluorescent excited state and upper triplet state were strongly influenced by the substituent and by the solvent polarity.

Published
2003

19. Efficient Condensation of DNA into Environmentally Responsive Polyplexes Produced from Block Catiomers Carrying Amine or Diamine Groups

Author

Albuquerque, Lindomar J. C., primary, Annes, Kelly, additional, Milazzotto, Marcella P., additional, Mattei, Bruno, additional, Riske, Karin A., additional, Jäger, Eliézer, additional, Pánek, Jiří, additional, Štěpánek, Petr, additional, Kapusta, Peter, additional, Muraro, Paulo I. R., additional, De Freitas, Augusto G. O., additional, Schmidt, Vanessa, additional, Giacomelli, Cristiano, additional, Bonvent, Jean-Jacques, additional, and Giacomelli, Fernando C., additional

Published
2016
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20. Advanced Photon Counting : Applications, Methods, Instrumentation / edited by Peter Kapusta, Michael Wahl, Rainer Erdmann.

Author

Kapusta, Peter. editor., Wahl, Michael. editor., Erdmann, Rainer. editor., SpringerLink (Online service), Kapusta, Peter. editor., Wahl, Michael. editor., Erdmann, Rainer. editor., and SpringerLink (Online service)

Abstract

This volume focuses on Time-Correlated Single Photon Counting (TCSPC), a powerful tool allowing luminescence lifetime measurements to be made with high temporal resolution, even on single molecules. Combining spectrum and lifetime provides a “fingerprint” for identifying such molecules in the presence of a background. Used together with confocal detection, this permits single-molecule spectroscopy and microscopy in addition to ensemble measurements, opening up an enormous range of hot life science applications such as fluorescence lifetime imaging (FLIM) and measurement of Förster Resonant Energy Transfer (FRET) for the investigation of protein folding and interaction. Several technology-related chapters present both the basics and current state-of-the-art, in particular of TCSPC electronics, photon detectors and lasers. The remaining chapters cover a broad range of applications and methodologies for experiments and data analysis, including the life sciences, defect centers in diamonds, super-resolution microscopy, and optical tomography. The chapters detailing new options arising from the combination of classic TCSPC and fluorescence lifetime with methods based on intensity fluctuation represent a particularly unique highlight.

Published
2015

21. Behaviour management in dementia

Author

Kapusta, Peter, Regier, Loren, Bareham, Julia, and Jensen, Brent

Subjects
Aged, 80 and over, Male, Practice, Behavior, Evidence-Based Medicine, Osteoarthritis, Urinary Tract Infections, Humans, Pain, Dementia
Published
2011

22. Ultrasensitive Detection Allows for Singlet Oxygen Phosphorescence Detection, an Important Prerequisite for Photodynamic Therapy

Author

Koenig, Marcelle, primary, Veiga, Manoel, additional, Tannert, Sebastian, additional, Koberling, Felix, additional, Buschmann, Volker, additional, Patting, Matthias, additional, Sackrow, Marcus, additional, Wahl, Michael, additional, Erdmann, Rainer, additional, Kapusta, Peter, additional, Wolf, Christian, additional, Kaufmann, Christian, additional, and Rodriguez, Humberto, additional

Published
2015
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38. Recent advances in time-correlated single-photon counting

Author

Koberling, Felix, primary, Krämer, Benedikt, additional, Tannert, Sebastian, additional, Rüttinger, Steffen, additional, Ortmann, Uwe, additional, Patting, Matthias, additional, Wahl, Michael, additional, Ewers, Benjamin, additional, Kapusta, Peter, additional, and Erdmann, Rainer, additional

Published
2008
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