Bright Luminescence in Three Phases—A Combined Synthetic, Spectroscopic and Theoretical Approach

Synthesis and characterization of bis-cyclopropanated 1,3,5-tricarbonyl compounds. A combined synthetic, spectroscopic and theoretical study.

Bis-cyclopropanated 1,3,5-tricarbonyl compounds were prepared by a sequence of Claisen condensations and cyclopropanations. The optimization of the conditions proved to be very important to suppress retro-Claisen reactions. The conformation of these molecules was studied by experimental and computational methods. The syn/syn;syn/syn conformation is present for all derivatives. It is exclusively...

Luminescence in Sulfides: A Rich History and a Bright Future

Sulfide-based luminescent materials have attracted a lot of attention for a wide range of photo-, cathodoand electroluminescent applications. Upon doping with Ce 3+ and Eu 2+ , the luminescence can be varied over the entire visible region by appropriately choosing the composition of the sulfide host. Main application areas are flat panel displays based on thin film electroluminescence, field em...

Bright three-photon luminescence from gold/silver alloyed nanostructures for bioimaging with negligible photothermal toxicity.

Optically stimulated luminescence in synthetic quartz

Optically stiniulated luminescence (OSL). has been studied in synthetic quartz crystals. which had previously been exposed to Jtor X-irradiations. The main emission hands appeared at 380 and -~440 nm. The excitation spectra of these emission bands were now measured and showed both a maximum at 330nm. This maximum coincides with an excitation maximum of the phototransferred thermoluminescence (P...

Time-Resolved Luminescence Detection and Imaging Promises a Bright Future

Fluorescence/phosphorescence (referred in this article simply as luminescence) based-detections arguably are the most widely used detection technique for biological assays, imaging, and sensing. This is primarily due to its high detection sensitivity and the commercial availability of a large number of fluorescence probes [1-3]. Key to the usefulness of luminescence methods is the ability to se...