6814 Suchergebnisse für: „“

Cu(I) vs. Ru(II) complexes — photophysical and electrochemical behavior of a series of structurally related photosensitizers

Heteroleptic Cu(I) complexes are a promising alternative towards traditional Ru(II) photosensitizers. In particular, Cu(I) complexes of the type [Cu(N^N)(P^P)]+, where N^N represents a diimine and P^P...

Copper nanostructures for chemical analysis using surface-enhanced Raman spectroscopy

Surface-enhanced Raman spectroscopy (SERS) is a modern tool for chemical analysis. SERS utilizes plasmonic metal nanostructures (SERS substrates) to enhance the molecular specific Raman signal by several...

Luminescence effects in reactive powder sintered silica glasses for radiation sensing

Silica glasses doped with rare earth ions are potential dosimetry materials for optical fibre applications. High sensitivity dosimetry requires fibres with large cores that can be reliably fabricated using...

Bunimovich Stadium-like Microsphere for Randomized Fiber Laser Operation

A modified silica microsphere was demonstrated for random laser generation. A conventional microsphere was fabricated in an optical fiber tip through electric arc discharge, and modifications to its geometry...

Unravelling the light-activated reaction mechanism in a catalytically competent key intermediate of a multifunctional molecular catalyst for artificial photosynthesis

Photophysics of a Ruthenium Complex with a π-Extended Dipyridophenazine Ligand for DNA Quadruplex Labeling

The light-switch mechanism of the complex [Ru(bpy)2(Br-dpqp)](PF6)2 (1, bpy = 2,2′-bipyridine, Br-dpqp = 12-bromo-14-ethoxydipyrido[3,2-a:2′,3′-c]quinolino[3,2-h]phenazine), i.e., a light-up probe...

Optical Fiber Probe for Viscosity Measurements

An optical fiber probe was developed for viscosity measurements. The sensor acts as a two-wave interferometer, sensible to the position of the fluid inside the cavity. Viscosity is measured through the...

Electron transfer in a covalent dye-cobalt catalyst assembly – a transient absorption spectroelectrochemistry perspective

Various oxidation states of the catalytically active cobalt center ina covalent dyad were electrochemically prepared and the light induced excited-state processes were studied. Virtually identical deactivation...

Measurement of the dispersion of an antiresonant hollow core fiber

Due to unique properties, anti-resonant hollow core fibers have found widespread use in various fields of science and application. Particular regarding applications that involve ultrashort pulses, precise...

Sulfur Spillover on carbon materials and possible impacts on metal-sulfur batteries

There is currently intense research on sulfur/carbon composite materials as positive electrode for rechargeable batteries. Preparation of such composites by ball milling or (melt/solution) impregnation...