Time-Resolved ESR.

Phosphinoyl Radicals: Structure and Reactivity. A Laser Flash Photolysis and Time-Resolved ESR Investigation

The photochemistry of a series of bis(acyl)phosphine oxides and the rate constants of the reactions of their phosphorus radicals with n-butylacrylate, thiophenol, bromotrichloromethane, oxygen, and methyl viologen have been investigated by laser flash photolysis. The results were compared to a mono(acyl)phosphine oxide ((2,4,6-trimethylbenzoyl)diphenylphosphine oxide). The variation in reactivi...

Whitepaper ESR Time Domain Scan

ESR spectrometer with a loop-gap resonator for cw and time resolved studies in a superconducting magnet.

The design and performance of an electron spin resonance spectrometer operating at 3 and 9 GHz microwave frequencies combined with a 9-T superconducting magnet are described. The probehead contains a compact two-loop, one gap resonator, and is inside the variable temperature insert of the magnet enabling measurements in the 0-9T magnetic field and 1.5-400 K temperature range. The spectrometer a...

Time-resolved mass spectrometry

Mass spectrometry (MS) offers advantages over conventional spectroscopic assays because it enables structural determination of reactants while preserving temporal resolution. The ability to detect short-lived reaction intermediates or labile metabolites makes time-resolved MS (TRMS) measurements an enabling tool for studies of chemical reactions, chemical kinetics and biochemical dynamics. High...

Computational time-resolved imaging

Classical photography uses steady-state illumination and light sensing with focusing optics to capture scene reflectivity as images; temporal variations of the light field are not exploited. This thesis explores the use of time-varying optical illumination and time-resolved sensing along with signal modeling and computational reconstruction. Its purpose is to create new imaging modalities, and ...