Supramolecular luminescence from oligofluorenol-based supramolecular polymer semiconductors.

ABSTRACT: Supramolecular luminescence stems from non-covalent exciton behaviors of active ?-segments in supramolecular entities or aggregates via intermolecular forces. Herein, a ?-conjugated oligofluorenol, containing self-complementary double hydrogen bonds, was synthesized using Suzuki coupling as a supramolecular semiconductor. Terfluorenol-based random supramolecular polymers were confirmed via concentration-dependent nuclear magnetic resonance (NMR) and dynamic light scattering (DLS). The photoluminescent spectra of the TFOH-1 solution exhibit a green emission band (g-band) at approximately ~520 nm with reversible features, as confirmed through titration experiments. Supramolecular luminescence of TFOH-1 thin films serves as robust evidence for the aggregates of g-band. Our results suggest that the presence of polyfluorene ketone defects is a sufficient condition, rather than a sufficient-necessary condition for the g-band. Supramolecular electroluminescence will push organic devices into the fields of supramolecular optoelectronics, spintronics, and mechatronics.

SUBMITTER: Zhang GW 

PROVIDER: S-EPMC3856068 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature