Sunlight-energy-storing method
This invention is a method for storing light energy using an indigo derivative. Among indigo derivatives capable of storing light energy by the photoisomerization of the molecule from the trans-form to the cis-form, compounds heretofore obtained have been soluble only in expensive solvents such as benzene, toluene, chloroform, carbon tetrachloride and the like and harmful substances. On the other hand, the indigo derivative of this invention has the form of a pyridinium salt, is soluble in water and/or ethanol, and permits employment of safe and inexpensive water and/or an alcohol as a solvent. The indigo derivative of this invention converted from the trans-form to the cis-form by irradiation with sunlight and storing sunlight energy liberates the aforesaid stored energy as heat on addition of a catalyst and/or a heat trigger.
- Assignee:
- Matsushita Electric Industrial Co., Ltd. (Japan)
- Patent Number(s):
- US 4449516
- OSTI ID:
- 6282040
- Resource Relation:
- Patent Priority Date: Priority date 25 Jan 1983, Japan; Other Information: PAT-APPL-460897
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
INDIGO
ISOMERIZATION
THERMOCHEMICAL HEAT STORAGE
SOLAR RADIATION
CATALYSTS
ETHANOL
IRRADIATION
PYRIDINIUM COMPOUNDS
SOLUBILITY
WATER
ALCOHOLS
AMINES
AMMONIUM COMPOUNDS
AROMATICS
AZAARENES
AZINES
AZOLES
CHEMICAL REACTIONS
DYES
ENERGY STORAGE
HEAT STORAGE
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDOLES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PYRIDINES
PYRROLES
QUATERNARY COMPOUNDS
RADIATIONS
STELLAR RADIATION
STORAGE
142000* - Solar Energy- Heat Storage- (1980-)