Fine-tuning the lifetimes and energy storage capacities of meta-stable vinylheptafulvenes via substitution at the vinyl position. Issue 54 (18th May 2016)

• Record Type: Journal Article
• Authors: Cacciarini, Martina; Jevric, Martyn; Elm, Jonas; Petersen, Anne U.; Mikkelsen, Kurt V.; Nielsen, Mogens Brøndsted
• Is Part Of: RSC advances. Volume 6:Issue 54(2016)
• Page Start: 49003
• Page End: 49010
• Publication Date: 2016-05-18
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra06045e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A novel set of photo/thermo switches is available by one-step synthesis from the parent system. Abstract : Using a dicyano-substituted dihydroazulene (DHA) as precursor, we can access a large selection of DHAs where one cyano group has been transformed into another functionality. Upon irradiation these DHAs are readily converted into the meta-stable vinylheptafulvenes (VHFs), whose half-lives are found to span from milliseconds to days. Thus, the nature of substituent groups at the vinyl position of VHF has a strong, although not simple to predict, influence on its ability to undergo a ring-closure reaction to form a DHA.