41 research outputs found
The role of transition radiation in cathodoluminescence imaging and spectroscopy of thin-foils
Full text linkPreparation of cyclic ethers for polyether synthesis by catalytic ring-closing enyne metathesis of alkynyl ethers
No full textInfrared spectroscopic investigations on the metallation of terminal alkynes by Zn(OTf)(2)
No full textAn IR study of terminal acetylenes and Zn(OTf)(2) in the presence of amine bases provides evidence that is consistent with the generation of Zn-acetylides
Highly Enantioselective Addition of Phenylacetylene to Aldehydes Catalyzed by a Camphorsulfonamide Ligand
No full textEnantioselective Alkynylation of Aldehydes Catalyzed by [2.2]Paracyclophane-Based Ligands
No full text
Asymmetric Total Synthesis of (+)-Inthomycin C via O-Directed Free Radical Alkyne Hydrostannation with Ph 3
No full textThe First Conjugate Addition Reaction of Terminal Alkynes Catalytic in Copper: Conjugate Addition of Alkynes in Water
No full textIridium metal complexes as an unambiguous probe of intramolecular vibrational redistribution
No full textUltrafast luminescence spectroscopy has been undertaken on three iridium cored phosphorescent complexes, with the Ir(ppy)3 molecule being compared with two Ir(ppy)3 cored dendrimers. Energy dissipation by intramolecular vibrational redistribution (IVR) and cooling shows as a luminescence decay because it decreases the admixture of singlet character to the emitting triplet state. A larger amount of vibrational energy dissipates by IVR in dendrimer complexes. We have therefore found a methodology of obtaining unambiguous information on the IVR process and show its potential to study IVR rates as a function of vibrational energy
