Chemical storage of radiant energy

US3994675A · kind A · utility

Assignee

• COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION · AU

Inventors

• Wolfgang Sasse · Haltern, DE
• Tsutomu Teitei · Melbourne, AU

Key dates

• Filing date: Oct 7, 1974
• Grant date: Nov 30, 1976
• Expiry date: Oct 7, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A system for the chemical storage of radiant energy in which either: A. 1,8-diaryl-1a,2,7,7a-tetrahydro-1,2,7-metheno-1H-cyclopropa[b]naphthalenes (1) are converted on heating to 1,2-diaryl-2a,8b-dihydrocyclobuta[a]naphthalenes (2) or 8,9-diaryl-benzocyclooctatetraenes (3), with the release of heat; and exposure of either compounds (3) or compounds (2) to suitable radiation results in the photochemical synthesis of compounds (1); or B. substituted naphthalenes undergo photochemical dimerization to form 1,2,2a,7,8,12b-hexahydro-1,8,2,7-ethanedihylidenedibenzo[a,e]cyclobuta[c]c yclooctenes. On heating, the latter revert to the original naphthalenes with the release of heat.