1009039-99-9

Upstream product

• 1009039-98-8 (E)-1-phenyl-2-{4-[(trimethylsilyl)ethynyl]phenyl}diazene 
• 540-37-4 p-aminoiodobenzene 
• 75867-39-9 4-trimethylsilylethynyl aniline 

Downstream Products

• 1627941-97-2 3-O-{2-cyanoethyl(diisopropylamino)phosphino}-5'-O-(4,4'-dimethoxytrityl)-5-(4-phenyldiazenylphenyl)ethynyl-2'-deoxyuridine 
• 1627941-87-0 5-(4-phenyldiazenylphenyl)ethynyl-2'-deoxyuridine 

Relevant academic research and scientific papers

Hierarchical Synthesis, Structure, and Photophysical Properties of Gallium- and Ruthenium-Porphyrins with Axially Bonded Azo Ligands

The hierarchical synthesis of three porphyrin and four bisporphyrin derivatives is presented. This strategy relies on the incorporation of linkers based on azo moieties appended with pyridyl and/or acetylenic groups that facilitate axial coordination to Ga- and Ru-metalloporphyrins. These porphyrinic systems allow for a quantitative analysis of the effects of diamagnetic anisotropy (DA) by using 1H NMR spectroscopic and X-ray crystallographic analyses. A simple power-law relationship between the proton chemical shift and the distance from the porphyrin core is experimentally outlined, which confirms previous theoretical predictions and shows that the limit of DA is about 2 nm. Photophysical properties of the azo-linked porphyrins are analyzed by UV/Vis spectroscopy, showing that significant cis–trans isomerization is not observed for azo ligands bound only to Ga-porphyrins. Incorporation of Ru-porphyrins to an azo ligand facilitates photoswitching behavior, but the process faces competition from decarbonylation of the Ru-porphyrin, and appreciable switching is only documented for GaL1Ru.

Stabilization of High Oxidation State Upconversion Nanoparticles by N-Heterocyclic Carbenes

The stabilization of high oxidation state nanoparticles by N-heterocyclic carbenes is reported. Such nanoparticles represent an important subset in the field of nanoparticles, with different and more challenging requirements for suitable ligands compared to elemental metal nanoparticles. N-Heterocyclic carbene coated NaYF4:Yb,Tm upconversion nanoparticles were synthesized by a ligand-exchange reaction from a well-defined precursor. This new photoactive material was characterized in detail and employed in the activation of photoresponsive molecules by low-intensity near-infrared light (λ=980 nm).