The antioxidative activities of nineteen compounds of seven series of alkylidene- and benzylidenebisphenols were evaluated by means of an oxygen-absorption method at 60 °C for tetralin. The electrochemical oxidation potentials determined using linear-sweep voltammetry and the 13C NMR chemical shifts (δ) of these compounds were obtained. These data were associated with the antioxidative activities.
Highly sulfonated graphene and graphene oxide nanosheets as heterogeneous nanocatalysts in green synthesis of bisphenolic antioxidants under solvent free conditions
作者:Hossein Naeimi、Mohsen Golestanzadeh
DOI:10.1039/c4ra10177d
日期:——
Sulfonated functionalized graphene and grapheneoxide nanosheets were prepared via chemical approaches and their catalytic activities were investigated in the green synthesis of 6,6′-(arylmethylene)bis(2,4-dialkylphenol) antioxidants. In this research, three types of the catalysts including sulfonated reduced grapheneoxide nanosheets (catalyst 1a), sulfonated grapheneoxide nanosheets (catalyst 1b)
A thermally developable photosensitive material of enhanced sensitivity, reduced variation in sensitivity following pre-exposure storage and improved silver image tone is disclosed, comprising a support having thereon an organic silver salt, a binder, a photosensitive silver halide, an infrared-sensitizing dye and a heteroatom containing macrocyclic compound.
Image forming method of photothermographic material
申请人:KONICA CORPORATION
公开号:EP1037102A1
公开(公告)日:2000-09-20
An image forming method is disclosed, comprising the steps of processing image data or setting an exposure condition so that an image size is enlarged or reduced, imagewise exposing a photothermographic material to laser to form an image enlarged or reduced based on the processed image data or the set exposure condition, and subjecting the exposed photothermographic material to thermal development, in which the photothermographic material comprises an organic silver salt, a photosensitive silver halide, a reducing agent, and a contrast increasing agent or a quaternary onium salt.
A photothermographic imaging material having high sensitivity and superior temporal storage stability. The photothermographic imaging material includes silver halide on at least one side of a support, and includes at least one kind of the compounds represented by the following general formula (1).