PCET is reported for free-base meso-(pyridyl)porphyrins, a pure organic system in dichloromethane solution, by employing UV/Vis and fluorescence spectroscopic techniques.

PURPOSE To develop a robust and rapid imaging technique for hyperpolarized (13)C MR Spectroscopic Imaging and investigate its performance. METHODS A concentric rings readout trajectory with constant angular velocity is proposed for hyperpolarized (13)C spectroscopic imaging and its properties are analyzed. Quantitative analyses of design tradeoffs are presented for several imaging scenarios. ...

Over the past ten years the atomic force microscope has developed more and more into a spectroscopic tool rather than a simple microscope. Still, for most non-expert users corning from fields other than physics, such as biomedical scientists, dealing with the advanced spectroscopic AFM techniques beyond imaging is not so simple. This tutorial answers some how-to-do-it questions concerning the m...

The 2Z-isomer of malyngamide K has been isolated along with the known compounds malyngamide C, deoxy-C and K, and characterized from a Papua New Guinea field collection of the cyanobacterium Lyngbya majuscula. The planar structure was deduced by 1D and 2D NMR spectroscopic and mass spectral data interpretation. The absolute configurations were determined on the basis of spectroscopic techniques...

A new bisthiourea compound, 1,3,1',3'-(dinaphthalene-1,8diyl)bisthiourea, was synthesized. Its structure was characterized by elemental analysis, FT-IR and 1H-, 13C-NMR and MS spectroscopic techniques.

Three new rearranged ent-kaurane-type diterpenoids (1-3) and seven new ent-kaurane-type diterpenoids (4-10) have been isolated from the liverwort Jungermannia atrobrunnea. Their structures were determined by extensive spectroscopic techniques and X-ray crystallographic analysis. The absolute configurations of these compounds were clarified by CD spectroscopic studies. Compound 1 is the first ex...

The analysis of monomolecular layers has traditionally been a challenging spectroscopic measurement due to the relatively low signal obtained from the sample. Specular reflectance at high “grazing” angles (around 80 degrees from normal to the surface) has been recognized as one of the best spectroscopic techniques to monitor monomolecular layers on reflective surfaces due to the enhancement of ...

Mass-spectroscopic experiments related to the endohedral metallofullerene are reviewed. Generation techniques of gas phase clusters, FT-ICR mass spectroscopy experiments, and ion mobility experiments are overviewed. Based on those experimental results, the formation mechanism of endohedral metallofullerene is discussed with classical molecular dynamics simulation results. Finally, exotic predic...