Enhancing the Cumulene Character of One-Dimensional Acetylene-Based Systems by Stimuli-Induced Planarization of Their Two Pro-diradicaloid Cyclopenta[h,i]aceanthrylene Units.

ABSTRACT: Acetylene/polyynes -(C≡C-)_n and cumulenes =(C=)_n are connectors widely used for the realization of one-dimensional (1D) π-conjugates. Although both π-moieties are constituted by sp carbon atoms, their different bond connectivity confers distinct physicochemical properties to the resulting systems. In this context, while many acetylene/polyyne- and cumulene-based derivatives have been prepared and studied, no reports have tackled the possibility to reversibly alter the acetylene/polyyne-cumulene electronic character of these derivatives using mild conditions. Herein, we present a novel approach to enhance the cumulene character of 1D acetylene-based conjugates consisting in the preparation of derivatives featuring an acetylene moiety connecting two pro-diradicaloid spe

SUBMITTER: Fernandez AC 

PROVIDER: S-EPMC11811688 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature