A5020878716- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Conducting polymers and applications
- Cooperative Communication and Network Coding
- Pickering emulsions and particle stabilization
- Organic Electronics and Photovoltaics
- Mobile Ad Hoc Networks
- Nanoplatforms for cancer theranostics
- Supercapacitor Materials and Fabrication
- Supramolecular Self-Assembly in Materials
- Innovative Microfluidic and Catalytic Techniques Innovation
- Hydrogels: synthesis, properties, applications
- Advanced MIMO Systems Optimization
- Photonic Crystals and Applications
- 3D Printing in Biomedical Research
- Advanced Sensor and Energy Harvesting Materials
- Ionic liquids properties and applications
- Fiber-reinforced polymer composites
- Molecular Junctions and Nanostructures
- Microfluidic and Capillary Electrophoresis Applications
- Photoacoustic and Ultrasonic Imaging
- Electrospun Nanofibers in Biomedical Applications
- Advanced Battery Materials and Technologies
- Synthesis and Properties of Aromatic Compounds
- Advanced Polymer Synthesis and Characterization
Universität Ulm
2019-2025
Center for Integrated Quantum Science and Technology
2024
Albert Einstein College of Medicine
2024
DWI – Leibniz Institute for Interactive Materials
2014-2023
Yale University
2023
RWTH Aachen University
2012-2022
Universitätsklinikum Aachen
2022
University of Minnesota Medical Center
2022
Helmholtz-Institute Ulm
2019
FH Aachen
2014-2018
Recent advances in the field of bioprinting have led to development perfusable complex structures. However, most existing printed vascular channels lack composition or key structural and physiological features natural blood vessels they make use more easily printable but less biocompatible hydrogels. Here, we a drop-on-demand technique generate vitro vessel models, consisting continuous endothelium imitating tunica intima, an elastic smooth muscle cell layer mimicking media, surrounding...
Polydimethylsiloxane is a translucent and biologically inert silicone material used in sealants, biomedical implants microscale lab-on-a-chip devices. Furthermore, membrane technology, polydimethylsiloxane represents for separation barriers as it has high permeabilities various gases. The facile handling of two component formulations with base material, catalyst small molecular weight crosslinker makes widely applicable soft-lithographic replication two-dimensional device geometries, such...
Conjugated polymer nanoparticles exhibit strong fluorescence and have been applied for biological imaging in cell culture small animals. However, conjugated particles are hydrophobic often chemically inert materials with diameters ranging from below 50 nm to several microns. As such, cannot be excreted through the renal system. This drawback has prevented their application clinical bio-medical imaging. Here, we present fully based on imidazole units. These can bio-degraded by activated...
A generic, facile, and waterborne strategy is introduced to fabricate flexible, low-cost nanocomposite films with room-temperature phosphorescence (RTP) by incorporating RTP polymers into self-assembled bioinspired polymer/nanoclay nanocomposites. The excellent oxygen barrier of the lamellar nanoclay structure suppresses quenching effect from ambient (k
The development of methods to detect damage in macromolecular materials is paramount importance understand their mechanical failure and the structure-property relationships polymers. Mechanofluorophores are useful sensitive molecular motifs for this purpose. However, date, tailoring optical properties remains challenging correlating emission intensity force induced material respective events on level complicated by intrinsic limitations fluorescence its detection techniques. Now, tackled...
Self-healing hydrogels are attractive to extend material lifetime by rapid recovery from damage; the underlying healing mechanism regarding polymer diffusion of broad research interest. However, intuitive and convenient characterization remains challenging due complex dynamic features hydrogels. Herein, we have constructed a dually-crosslinked hydrogel system decouple factors for direct visualization quantified study dynamics. The successively formed networks designated purposes...
Photoresponsive polymers can be conveniently used to fabricate anti-counterfeiting materials through photopatterning. However, an unsolved problem is that ambient light and heat damage patterns on photoresponsive polymers. Herein, photo- thermostable are developed by photopatterning thermal annealing of a conjugated polymer (MC-Azo). MC-Azo contains alternating azobenzene fluorene units in the backbone. To prepare material, film irradiated with polarized blue photomask, then thermally...
Abstract Conjugated molecules with multiple radical centers such as the iconic Chichibabin diradicaloid hold promise building blocks in materials for quantum sensing and information processing. However, it is a considerable challenge to design simple analogues of hydrocarbon that are chemically inert, exhibit high diradical character emit light at distinct wavelength may offer an optical readout spin state functional ensembles. Here we describe serendipitous discovery stable TTM‐TTM...
Abstract Photoacoustics is a powerful biomedical imaging and detection technique, because it noninvasive, nonionizing, low‐cost method facilitating deep tissue penetration. However, suitable contrast agents need to be developed increase the for in vivo imaging. Gold nanoparticles are often discussed as potential sonophores due their large absorption cross‐section tunable plasmon resonance. disadvantages such toxicity low photoacoustic efficiency transparency window prevail, preventing...
Abstract Filtration of natural and colloidal matter is an essential process in today’s water treatment processes. The retained with the help micro- nanoporous synthetic membranes. Colloids are a “cake layer” – often coined fouling layer. Membrane most substantial problem membrane filtration: build-up leads to increasing resistance thus decreasing transport rate through membrane. Theoretical models exist describe macroscopically hydrodynamic such rejection phenomena; however, visualization...
The generation of microgel capsules with a photo-crosslinkable polymer shell and FITC-dextran encapsulation. Scale bars: 100 μm.
In-chip fabrication<italic>via</italic>two-photon polymerization of embedded pressure resistant and fluid tight systems.
Photoacoustics is an upcoming modality for biomedical imaging, which promises minimal invasiveness at high penetration depths of several centimeters. For superior photoacoustic contrast, imaging probes with photothermal conversion efficiency are required. Gold nanoparticles among the best performing probes. However, geometry and size determine their efficiency. We present a systematic theoretical analysis to optimum nanoparticle respect in near-infrared spectral range, contrast. Theoretical...
Abstract Macroscopic supramolecular assembly (MSA) is a rising concept in science, which building blocks with sizes exceeding 10 μm self‐assemble into larger structures. MSA faces the challenge of developing appropriate self‐propulsion strategies to improve motility macroscopic blocks. Although Marangoni effect an ideal driving force random motion paths, excessive aggregation surfactant and fast decay remain challenging problems. Hence, molecular interference strategy drive self‐assembly...
Fast emission and high color purity are essential characteristics of modern opto-electronic devices, such as organic light emitting diodes (OLEDs). These properties currently not met by the latest generation thermally activated delayed fluorescence (TADF) emitters. Here, we present an approach, called "hot exciplexes" that enables access to both attributes at same time. Hot exciplexes produced coupling facing donor acceptor moieties anthracene bridge, yielding exciplex with large T
A facile method for preparing highly monodisperse, sub-micrometre conjugated polymer particles is reported. The are prepared through emulsification of a solution on microfluidic chip followed by solvent evaporation. particle size tuned between 150 nm to 2 μm, controlling the concentration.
We present a novel class of light-responsive particles for fluorescence modulation at low switching doses. The also exhibit phase-changing and shape-shifting behavior. monodisperse conjugated polymer with incorporated light-switchable azobenzene moieties are prepared in Suzuki-Miyaura dispersion polymerization. influence the molecular structure trans-to-cis behavior on photonic performance investigated. ideal candidates responsive organic photonics as high resolution marker systems...