Results 71 to 80 of about 207,530 (298)

Mechanochromism of Glassy Polymers Enabled by a Loop‐Forming Supramolecular Mechanophore

Advanced Functional Materials, EarlyView.
The supramolecular mechanophore LOOP is covalently introduced into glassy polymers, capable of reporting force‐induced pre‐failure damage and local fracture events in polymer glasses. Under different mechanical deformation modes, including grinding, tensile stretching, and scratching, LOOP probes irreversible events in polymer glasses through a ...
Linlin Deng, Chantal Graafsma, Felix Meyenhofer, Iulia Scarlat, Luca Bertossi, Christoph Weder, Jess M. Clough   +6 more
wiley   +1 more source

Spectroscopically Well-Characterized RGD Optical Probe as a Prerequisite for Lifetime-Gated Tumor Imaging

Molecular Imaging, 2011
Labeling of RGD peptides with near-infrared fluorophores yields optical probes for noninvasive imaging of tumors overexpressing α v β 3 integrins. An important prerequisite for optimum detection sensitivity in vivo is strongly absorbing and highly ...
Julia Eva Mathejczyk, Jutta Pauli, Christian Dullin, Joanna Napp, Lutz-F. Tietze, Horst Kessler, Ute Resch-Genger, Frauke Alves   +7 more
doaj   +1 more source

Strong plasmonic fluorescence enhancement of individual plant light-harvesting complexes [PDF]

, 2019
Plasmonic coupling of metallic nanoparticles and adjacent pigments can dramatically increase the brightness of the pigments due to the enhanced local electric field. Here, we demonstrate that the fluorescence brightness of a single plant light-harvesting
Botha, Joshua L., Diale, Mmantsae, Krüger, Tjaart P. J., Kyeyune, Farooq, Malý, Pavel, van Grondelle, Rienk, van Heerden, Bertus   +6 more
core   +2 more sources

Light Activated Induction of Cuproptosis in Resistant Cancer Cells Using Polymeric BODIPY Nanoparticles for Photoactivated Chemotherapy

Advanced Functional Materials, EarlyView.
This article presents a photo‐responsive nanoparticle platform that precisely triggers copper‐dependent cuproptotic cell death in (drug‐resistant) cancer cells. The system remains stable and inactive in the dark but releases cytotoxic species upon red‐light irradiation, achieving potent activity in drug‐resistant breast cancer cells.
Ricarda Zimmermann, Nicolás Montesdeoca, Johannes Karges   +2 more
wiley   +1 more source

Using in vivo fluorescence lifetime imaging to detect HER2-positive tumors

EJNMMI Research, 2018
Background Assessment of the status of tumor biomarkers in individual patients would facilitate personalizing treatment strategy, and continuous monitoring of those biomarkers and their binding process to the therapeutic drugs would provide a means for ...
Yasaman Ardeshirpour, Dan L. Sackett, Jay R. Knutson, Amir H. Gandjbakhche   +3 more
doaj   +1 more source

Macroscopic fluorescence-lifetime imaging of NADH and protoporphyrin IX improves the detection and grading of 5-aminolevulinic acid-stained brain tumors

Scientific Reports, 2020
Maximal safe tumor resection remains the key prognostic factor for improved prognosis in brain tumor patients. Despite 5-aminolevulinic acid-based fluorescence guidance the neurosurgeon is, however, not able to visualize most low-grade gliomas (LGG) and ...
Mikael T. Erkkilä, David Reichert, Johanna Gesperger, Barbara Kiesel, Thomas Roetzer, Petra A. Mercea, Wolfgang Drexler, Angelika Unterhuber, Rainer A. Leitgeb, Adelheid Woehrer, Angelika Rueck, Marco Andreana, Georg Widhalm   +12 more
doaj   +1 more source

Franck-Condon Factors and Radiative Lifetime of the A^{2}\Pi_{1/2} - X^{2}\Sigma^{+} Transition of Ytterbium Monoflouride, YbF

, 2011
The fluorescence spectrum resulting from laser excitation of the A^{2}\Pi_{1/2} - X^{2}\Sigma^{+} (0,0) band of ytterbium monofluoride, YbF, has been recorded and analyzed to determine the Franck-Condon factors.
Anh Le, B. E. Sauer, Condylis, Di Rosa, Dickinson, Dunfield, E. A. Hinds, Hudson, Hudson, I. J. Smallman, J. J. Hudson, M. R. Tarbutt, Ma, N. E. Bulleid, Osterwalder, R. J. Hendricks, S. M. Skoff, Sauer, Sauer, Sauer, Shuman, Shuman, Skoff, Skoff, Steimle, Steimle, Tarbutt, Tarbutt, Timothy C. Steimle, Wall, Wall, Xiujuan Zhuang   +31 more
core   +1 more source

Uncovering the Origin of Efficiency Roll‐Off in TADF OLEDs

Advanced Functional Materials, EarlyView.
OLEDs based on thermally activated delayed fluorescent (TADF) materials often suffer from a severe drop in efficiency at high brightness levels. This work presents a technique to uncover the source of this efficiency drop, and quantifies the exciton‐exciton and exciton‐polaron annihilation processes responsible for efficiency losses in our TADF OLEDs ...
Liam G. King, Kou Yoshida, Arvydas Ruseckas, Ifor D. W. Samuel   +3 more
wiley   +1 more source

Separate lifetime signatures of macaque S cones, M/L cones, and rods observed with adaptive optics fluorescence lifetime ophthalmoscopy

Scientific Reports, 2023
In the retina, several molecules involved in metabolism, the visual cycle, and other roles exhibit intrinsic fluorescence. The overall properties of retinal fluorescence depend on changes to the composition of these molecules and their environmental ...
Khang T. Huynh, Sarah Walters, Emma K. Foley, Jennifer J. Hunter   +3 more
doaj   +1 more source

Probing subtle fluorescence dynamics in cellular proteins by streak camera based Fluorescence Lifetime Imaging Microscopy

, 2003
We report the cell biological applications of a recently developed multiphoton fluorescence lifetime imaging microscopy system using a streak camera (StreakFLIM).
Biener, Eva, Heckel, Robert, Herman, Brian, Krishnan, R. V., Zhang, Jian-Hua   +4 more
core   +1 more source