In the context of laser-induced breakdown spectroscopy (LIBS), plasma-induced luminescence (PIL) may be observed by tuning temporal acquisition parameters (delay and gate). This approach provides useful information about minor elements in a sample. The broad range excitation resulting from plasma enables simultaneous observation multiple emission bands. However, PIL results damage to sample due...

Three highly fluorescent phosphonates have been prepared in good yields from different arylene bridged 5-iodothiophenes by following an optimized four-step procedure. The compounds have been immobilised on mesoporous zirconia, alumina and titania particles in order to probe their luminescence properties on the surfaces. The organic compounds as well as the obtained hybrid materials have been ch...

A new and perspective addition to traditional fluorescent probes is the Au clusters (8−25 atoms) which can label proteins, rendering them extremely bright and photostable. In this paper, we show that albumins can quickly and effectively be labeled using microwave acceleration, which shortens the time of Au labeling from several hours to <30 s. Chromatography of Au proteins and FLIM (fluorescenc...

Two pyridylphenols with intramolecular hydrogen bonds between the phenol and pyridine units have been synthesized, characterized crystallographically, and investigated by cyclic voltammetry and UV/Vis spectroscopy. Reductive quenching of the triplet metal-to-ligand charge-transfer excited state of the [Re(CO)3(phen)(py)](+) complex (phen = 1,10-phenanthroline, py = pyridine) by the two pyridylp...

This paper reviews the research in nanomaterials conducted in our laboratory in the last decade using conventional and synchrotron radiation techniques. While preparative and conventional characterisation techniques are described, emphasis is placed on the analysis of nanomaterials using synchrotron radiation. Materials of primary interests are metal nanoparticles and semiconductor nanowires an...

Colloidal solutions and redispersible powders of nanocrystalline, lanthanide-doped phosphates and vanadates have been prepared in high-boiling coordinating solvents or by hydrothermal means in aqueous solution. Highly crystalline materials were obtained by both methods despite the low temperature of 2008C applied during the synthesis. The materials have been characterized by using high-resoluti...

Singlet oxygen (¹O₂) is an important reactive intermediate in photodynamic reactions, particularly in antimicrobial PDT (aPDT). The detection of ¹O₂ luminescence is frequently used to elucidate the role of ¹O₂ in various environments, particularly in microorganisms and human cells. When incubating the fungus, Candida albicans, with porphyrins XF73 (5,15-bis-[4-(3-Trimethylammonio-propyloxy)-phe...

We report the chemistry and photophysics of atomic gold and silver particles in inorganic glasses. By synchrotron irradiation of gold-doped soda-lime silicate glasses we could create and identify unambiguously the gold dimer as a stable and bright luminescing particle embedded in the glassy matrix. The gold dimer spectra coincide perfectly with rare gas matrix spectra of Au(2). The glass matrix...

The interaction of singlet oxygen (O2) generated in a photosensitized process with well-known reference photosensitizers Perinaphthenone (PN) and TMPyP is investigated in a model system consisting of fatty acids and the respective exogenous photosensitizer (PS) in solution by direct detection of the luminescence photons of O2 at 1270 nm. Such a model system is a first approach to mimic the comp...