78941-78-3Relevant academic research and scientific papers
INSOLUBLE CATALYST FOR HEAT-GAIN IN A WATER-SOLUBLE SOLAR ENERGY STORAGE SYSTEM
Maruyama, Kazuhiro,Tamiaki, Hitoshi,Kawabata, Shigeki
, p. 743 - 746 (1984)
By action of insoluble catalysts, cobalt tetraphenylporphyrin or cobalt phthalocyanine adsorbed on activated carbon, water-soluble quadricyclane derivative was isomerized to norbornadiene derivative under release of heat in an alkaline solution.The activi
Exothermic Isomerization of Water-soluble Quadricyclanes to Norbornadienes by Soluble and Insoluble Catalysts
Maruyama, Kazuhiro,Tamiaki, Hitoshi,Kawabata, Shigeki
, p. 543 - 550 (2007/10/02)
Water-soluble quadricyclane derivatives (1) were stable in an aqueous sodium carbonate solution, but addition of a catalytic amount of water-soluble cobalt porphyrin complexes (3) induced rapid and quantitative isomerization of (1) to norbornadiene derivatives (2) under release of heat.Insoluble catalysts (4) prepared by adsorption of Co-TPP or Co-Pc on activated carbon were similarly active as the soluble analogues.They were stable enough to keep high activities for recycling use.
Valence Isomerization between Water-soluble Norbornadiene and Quadricyclane Derivative
Maruyama, Kazuhiro,Tamiaki, Hitoshi,Yanai, Tetsuya
, p. 781 - 782 (2007/10/02)
Photoisomerization of 3-(arylcarbamoyl)-norbornadiene-2-carboxylic acid 1 to the corresponding quadricyclane derivative 2 in an aqueous alkaline solution was clean and dependent upon the p-substituent of the aryl group.The exothermically reversal reaction
A WATER-SOLUBLE SOLAR ENERGY STORAGE SYSTEM
Maruyama, Kazuhiro,Tamiaki, Hitoshi
, p. 1699 - 1702 (2007/10/02)
In an alkaline aqueous solution, photochemical valence isomerization of norbornadiene derivative 1 to quadricyclane derivative 2 occurred quantitatively, and reverse isomerization of 2 to 1 under release of heat was achived by catalytic action of cobalt h
Exploitation of Solar Energy Storage Systems. Valence Isomerization between Norbornadiene and Quadricyclane Derivatives
Maruyama, Kazuhiro,Terada, Kazutoshi,Yamamoto, Yoshinori
, p. 5294 - 5300 (2007/10/02)
Use of copper(I)-nitrogen ligand catalysts such as Ph3PCuCl*bpy (3), Ph3PCuCl*phen (4), Ph3PCuCl*phtha (5), and Ph3PCuBr*py (6) enables the photochemical isomerization of norbornadiene to quadricyclane to be performed at a longer wavelength than 350 nm, a
HIGHLY EFFICIENT VALENCE ISOMERIZATION BETWEEN NORBORNADIENE AND QUADRICYCLANE DERIVATIVES UNDER SUNLIGHT
Maruyama, Kazuhiro,Terada, Kazutoshi,Yamamoto, Yoshinori
, p. 839 - 842 (2007/10/02)
3-Phenylcarbamoyl-2,5-norbornadiene-2-carboxylic acid (1b) undergoes a facile and quantitative isomerization into the corresponding quadricyclane derivative (2b) under sunlight.The back isomerization of 2b to 1b proceeds quantitatively by the use of catal
