A quantitative metric for organic radical stability and persistence using thermodynamic and kinetic features.

ABSTRACT: Long-lived organic radicals are promising candidates for the development of high-performance energy solutions such as organic redox batteries, transistors, and light-emitting diodes. However, "stable" organic radicals that remain unreactive for an extended time and that can be stored and handled under ambient conditions are rare. A necessary but not sufficient condition for organic radical stability is the presence of thermodynamic stabilization, such as conjugation with an adjacent π-bond or lone-pair, or hyperconjugation with a σ-bond. However, thermodynamic factors alone do not result in radicals with extended lifetimes: many resonance-stabilized radicals are transient species that exist for less than a millisecond. Kinetic stabilization is also necessary for persistence, such as steric

SUBMITTER: Sowndarya S V S 

PROVIDER: S-EPMC8514092 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature