Publications by authors named "D Hessz"
New hybrids were synthesised by linking carboranes and siloles, both of which are known as aggregation-induced emission active units. Although most of the newly synthesised systems do not display notable quantum yield either in solution or in the aggregated state, they emit strongly in the solid-state, and a quantum yield of up to 100% can be achieved. The tailorable quantum yield can be attributed to the packing of the molecules in the crystal lattice ruled by the carborane and phenyl moieties according to the SC-XRD data.
View Article and Find Full Text PDFThe complex formation of the cationic stilbene-type photoswitch CP with the anionic macrocycles carboxylato-pillar[5]arene (WP5) and carboxylato-pillar[6]arene (WP6) has been investigated in aqueous solution by optical spectroscopic, NMR and isothermal calorimetric experiments and theoretical calculations. Subsequently, the photoisomerization reactions of the supramolecular complexes formed have been studied. CP consists of a 7-diethylamino-coumarin fluorophore and an -methylpyridinium unit, which are connected via an ethene bridge.
View Article and Find Full Text PDFLaF:1-6 mol%Yb,0.1 mol%Tm nanoparticles with upconversion properties were synthesised by the co-precipitation method. Particles were characterized by transmission electron microscopy coupled with energy-dispersive spectrometry, inductively coupled plasma optical emission spectrometry, X-ray diffraction, and simultaneous thermogravimetry and differential thermal analysis.
View Article and Find Full Text PDFArticle Synopsis
- A study assessed a new ultrasound-based algorithm for determining when to remove pancreatic stents placed to prevent post-ERCP pancreatitis, aiming to minimize unnecessary X-ray imaging.
- Out of 88 patients, the ultrasound approach successfully reduced the need for X-rays by 74%, accurately visualizing stents in 81% of cases but with limited specificity.
- The authors recommend implementing the ultrasound algorithm with training for experienced personnel due to challenges with visualizing shorter stents.
Study Objective: To assess the efficacy of an ECG-based method called thoracic impedance pneumography to reduce hypoxic events in endoscopy.
Design: This was a single center, 1:1 randomized controlled trial.
Setting: The trial was conducted during the placement of percutaneous endoscopic gastrostomy (PEG).