Rapid, multiplexed, sensitive and specific identification and quantitative detection of nitric oxide (NO) are in great demand in biomedical science. Herein, a novel multifunctional probe based on the intramolecular LRET (luminescence resonance energy transfer) strategy, TRP-NO, was designed for the highly sensitive and selective ratiometric and luminescence lifetime detection of lysosomal NO. B...

The luminescence of the marine dinoflagellate Gonyaulax polyedra shows an endogenous diurnal rhythm. The effect of light during the phase of low luminescence capacity may be observed as an enhancement of luminescence during the subsequent bright phase. During the bright phase, however, illumination diminishes the capacity for luminescence. The action spectra for these two effects of light have ...

Amorphous and crystalline powder of PLT phase was synthesized by using the Pechini method. Infrared (FTIR) analysis of the polymeric resin shows intense bands of organic materials from 250 to 1620 cm−1. X-ray diffraction (XRD) and Raman spectra of calcined powder at different temperatures show amorphous phase at 450 ◦C/3 h, semi-crystalline phase at 550 ◦C/3 h and a crystalline phase at 800 ◦C/...

Luminescence-based waveguide is widely investigated as a promising alternative to conquer the difficulties of efficiently coupling light into a waveguide. But applications have been still limited due to employing blue or ultraviolet light as excitation source with the lower penetration depth leading to a weak guided light. Here, we show a quasi-one-dimensional propagation of luminescence and th...

The effects of catecholamines (dopamine, adrenaline, noradrenaline and its derivatives), 5-hydroxytryptamine and purines (adenosine, ATP and their derivatives) on the acetylcholine-induced luminescence of isolated arms and dissociated photocytes of the luminescent ophiuroid Amphipholis squamata were tested. The results showed that catecholamines and 5-hydroxytryptamine (10(-)(5) to 10(-)(3 )mol...

In order to study the effect of viscosity on bubbles in a cavitating fluid, the properties of laser-induced bubbles and the resulting luminescence pulses are examined for various glycerol-water mixtures over 1-8 bars of pressure. Bubbles are generated by a Nd:YAG laser, with the bubble radius monitored by a laser-beam photodiode system and the luminescence structure measured by fast photomultip...

An active one-dimensional Fibonacci photonic quasi-crystal is realized via spin coating. Luminescence properties of an organic dye embedded in the quasi-crystal are studied experimentally and compared to theoretical simulations. The luminescence occurs via the pseudo-bandedge mode and follows the dispersion properties of the Fibonacci crystal. Time resolved luminescence measurement of the activ...

Three roseolumiflavin co-crystals are designed to elucidate the accessibility of flavins for targeted tuning luminescence in solid state.

Abstract Solid solutions of oxysulfides (RE0.95Ln0.05)2O2S (RE = La, Y; Ln Ho, Tm) were obtained by hydrogen reduction the co-precipitated sulfates followed sulfidation reaction products. The crystal chemical characteristics compounds refined Rietveld method. Morphological certification particles in dynamics synthesis was performed. Most produced reactions have a cut that indicates formation co...

Y3(Al,Ga)5O12 (YAGG) materials doped with Ce3+, Cr3+ and Pr3+ were synthesized by using a modified Pechini method subsequently annealed in air at selected temperatures between 900 1500 °C. According to X-ray powder diffraction (XRPD) transmission electron microscopy (TEM) analyses, the particles size distributions become large broad, respectively, due sintering agglomeration high annealing temp...