3496-05-7

Upstream product

• 89980-97-2 4-bromomethyl-benzenesulfonic acid methyl ester 
• 122-52-1 triethyl phosphite 
• 80-48-8 methyl p-toluene sulfonate 
• 66176-39-4 4-(bromomethyl)benzene-1-sulfonyl chloride 

Downstream Products

• 1402151-17-0 ethyl 4-((E)-4-((E)-4-cyanostyryl)styryl)benzenesulfonate 

Relevant academic research and scientific papers

Visible light-induced hole injection into rectifying molecular wires anchored on Co3O4 and SiO2 nanoparticles

Tight control of charge transport from a visible light sensitizer to a metal oxide nanoparticle catalyst for water oxidation is a critical requirement for developing efficient artificial photosynthetic systems. By utilizing covalently anchored molecular w

Synthesis and characterization of water-soluble phenylene-vinylene-based singlet oxygen sensitizers for two-photon excitation

The synthesis and characterization of water-soluble singlet oxygen sensitizers with a phenylene-vinylene motif is presented. The principal motivation for this study was to better understand specific features of a water-soluble molecule that influence the photosensitized production of singlet oxygen upon nonlinear, two-photon excitation of that molecule. To achieve water solubility, sensitizers were synthesized with ionic as well as nonionic substituents. In the ionic approach, salts of N-methylated pyridine, benzothiazole, and 1-methyl-piperazine moieties were used, as were aryl-substituted sulfonic acid moieties. In the nonionic approach, aryl-substituted triethylene glycol moieties were used. Selected photophysical properties of the compounds synthesized were determined, including singlet oxygen quantum yields. Of the molecules examined, the most efficient singlet oxygen sensitizers had triethylene glycol units as the functional group that imparted water solubility. Molecules containing the ionic moieties did not make singlet oxygen in appreciable yield nor did they efficiently fluoresce. Rather, for these latter molecules, rapid charge-transfer-mediated nonradiative processes appear to dominate excited state deactivation.