A5060376914- Luminescence and Fluorescent Materials
- Education, Psychology, and Social Research
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Spectroscopy and Quantum Chemical Studies
- Synthesis and Characterization of Heterocyclic Compounds
- Photochemistry and Electron Transfer Studies
- Organic Electronics and Photovoltaics
- Coccidia and coccidiosis research
- Molecular Sensors and Ion Detection
- Semiconductor Quantum Structures and Devices
- Mycotoxins in Agriculture and Food
- Magnetic and Electromagnetic Effects
- Plant and Biological Electrophysiology Studies
- Pesticide Residue Analysis and Safety
- Forensic and Genetic Research
- Growth and nutrition in plants
- Radical Photochemical Reactions
- Organic Light-Emitting Diodes Research
- Luminescence Properties of Advanced Materials
- Plant and soil sciences
- Agriculture, Plant Science, Crop Management
- Synthesis and Biological Evaluation
- Photosynthetic Processes and Mechanisms
- Forensic Anthropology and Bioarchaeology Studies
UNSW Sydney
2015-2021
Czech Technical University in Prague
2009-2021
Helmholtz-Zentrum Berlin für Materialien und Energie
2021
University of Kentucky
2021
The University of Sydney
2014-2016
Charles University
1967-2013
University Hospital Plzen
2013
Simon Fraser University
2001
Institute for Animal Husbandry
1971
National Research Development Institute for Animal Biology and Nutrition
1971
We report the observation of singlet fission in aqueous suspensions 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-Pn) nanoparticles (NPs) synthesized using reprecipitation method. By altering synthesis conditions we are able to fabricate NPs which evolve from a system poorly coupled highly chromophores. This morphological evolution can also be suppressed for period several months. Absorption spectra confirm that particles over time, displaying increased intermolecular interaction, if...
Photochemical upconversion in a quasi-solid gel proceeds with an identical efficiency to otherwise liquid composition.
The excited-state dynamics of 6,13-bis(triisopropylsilylethynyl)pentacene is investigated to determine the role excimer and aggregate formation in singlet fission high-concentration solutions. Photoluminescence spectra were measured by excitation with evanescent wave total internal reflection, order avoid reabsorption effects. over nearly two magnitudes concentration identical, no evidence for emission. Time-correlated single-photon counting measurements confirm that fluorescence lifetime...
Photon upconversion is a process that creates high-energy photons under low photon energy excitation. The effect of molecular geometry on the triplet fusion has been investigated in this work through design and synthesis four new 9,10-diphenylanthracene (DPA) derivatives by employing platinum octaethylporphyrin as sensitizer. These emitter molecules containing multiple DPA subunits linked together via central benzene core exhibit high fluorescence quantum yields. Interestingly, large...
We report on the physical operation and performance of MOCVD-grown abrupt heterojunction InP/GaAs/sub 0.51/Sb/sub 0.49//InP double bipolar transistors (DHBTs). In particular, effect InP collector thickness breakdown voltage current gain cutoff frequency is assessed a f/sub T/ 106 GHz reported for DHBT with 400 /spl Aring/ base 2000 BV/sub CEO/ 8 V. show that InP/GaAsSb/InP DHBTs are characterized by weak variation as function temperature. Finally, we also demonstrate high maximum oscillation...
Abstract A series of dicyanopyrazine and dicyanoimidazole derived push‐pull molecules have been prepared further investigated as photoredox catalysts. The fundamental properties the catalysts were studied by DSC, X‐ray analysis, absorption/emission spectra, electrochemistry completed with DFT results. catalytic activity has evaluated in visible light induced α‐functionalization amines (cross‐dehydrogenative coupling annulation reaction tetrahydroisoquinolines). Thorough...
We have investigated the ultrafast carrier dynamics in a 1 μm bulk In0.265Ga0.735N thin film grown using energetic neutral atom-beam lithography/epitaxy molecular beam epitaxy. Cathodoluminescence and X-ray diffraction experiments are used to observe existence of indium-rich domains sample. These give rise second population bi-exponential cooling is observed with characteristic lifetimes 1.6 14 ps at density 1.3 × 1016 cm−3. A combination band-filling, screening, hot-phonon effects gives...
Photochemical upconversion via triplet-triplet annihilation is a promising technology for improving the efficiency of photovoltaic devices. Previous studies have shown that depends largely on two rate constants intrinsic to emitting species. Here, we report one these can be altered by deuteration, leading enhanced efficiency. For perylene, deuteration decreases first order decay constant 16 ± 9% at 298 K, which increases linear response 45 21% in low excitation regime.
Plant tissue connected in a d.c. circuit behaves as capacitor, short-circuited through resistor. Using saw-tooth voltage (T = 2 ma, Umax + 13 V), structural and physiological conditions plant can be analyzed on the basis of changes current character.
We compared the occurrence of peroxidase isozymes in protein extract from roots, hypocotyls and cotyledons 10 dayCucurbita pepo plants adult leaves older by means starch gel polyacryl amide electrophoresis. reached maximum discrimination electrophoresis: 11 zones were ascertained on cathode side about 2 anode at pH 3.1. Two occurred regularly:A (the latter having a more complicated structure). ZoneD is characteristic for but it suppressed seldom found with leaves. On other hand zonesC 1 andC...
The hot carrier solar cell is an advanced concept photovoltaic device that predicted to deliver efficiencies in excess of conventional single bandgap devices. design requires the ability concurrently have extended thermalization times within absorber material, giving a population, and efficiently collect carriers at energy above material. In order achieve this, we require material with long-lived population. We investigate rates InIn <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The unicellular algaeScenedesmus obliquus (125),Chlorella pyrenoidosa (82) andCoccomyxa solorinae saccatae (111) were studied with respect to the form of uptake potassium, phosphate, calcium and zinc ions energy sources involved: light under autotrophic conditions, glucose mixotrophic or heterotrophic conditions (in in darkness together yeast extract as an auxotrophic substrate). We respected trophic algae when preparing experimental material (precultivation). following reached:
Die Ergebnisse der beschriebenen Versuche weisen darauf hin, dass in jungen Vegetationskegeln von Weizenpflanzen (2. Etappe Organogenese), die aerobe Gärung eine wichtige Rolle spielt, während älteren aeroben Oxydasensysteme den Vordergrund treten. In werden meisten Aminosäuren nicht grösserer Menge synthetisiert, selbst wenn ihnen Aminostickstoff angeboten wird. wichtigste Quelle für Eiweizsynthese stellen aus Blättern transportierten dar. Umwandlung derselben im Vegetationskegel ist aber...