Real roles of perylene diimides for improving photocatalytic activity.

Three novel visible-light-driven composite photocatalysts: five-membered O-heterocyclic annulated perylene diimide doped TiO (PDI-1/TiO), 1-phenol-,'-dicyclohexyl perylene-3,4,9,10-tetracarboxylic diimide doped TiO (PDI-2/TiO), and ,'-dicyclohexyl perylene diimide doped TiO (PDI-3/TiO), were synthesized using a hydrothermal synthesis method. The effects of introducing PDIs with different structures into TiO were evaluated by assaying the photodegradation rate of Methylene Blue (MB). The photoactivities of the PDI-1/TiO and PDI-2/TiO catalysts were better than that of PDI-3/TiO.

A water-soluble fluorescent pH probe based on perylene dyes and its application to cell imaging.

A fluorescent pH probe, N,N'-bi( l-phenylalanine amine)-perylene-3,4;9,10-dicarboxylic diimide (PDCDA) was synthesized and used for pH sensing in living cells. A significant fluorescence intensity change was observed over a pH range from 7.0 to 4.

Rapid and sensitive spectrofluorimetric determination of trace amount of Cr(III) with o-vanillin-8-aminoquinoline.

A novel fluorescent reagent o-vanillin-8-aminoquinoline(OVAQ) was synthesized, and its infrared spectrum, elemental analysis and acid-base dissociation constants were obtained. The fluorescent reaction of this reagent with Cr(III) was studied. In acetonitrile-water (1:1, (v/v)) medium of pH 6.