Supramolecular Luminescence from Oligofluorenol-Based Supramolecular Polymer Semiconductors

International Journal of Molecular Sciences

Guang-Wei Zhang¹  Long Wang¹  Ling-Hai Xie¹  Jin-Yi Lin¹ 

[1] Center for Molecular Systems and Organic Devices (CMSOD), Key Laboratory for Organic Electronics & Information Displays, Institute of Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210046, China; E-Mails:

关键词: luminescence;    supramolecular polymers;    polyfluorenes;    hydrogen bonds;    thin films;   

DOI  :  10.3390/ijms141122368

来源: mdpi

【 摘 要 】

Supramolecular luminescence stems from non-covalent exciton behaviors of active π-segments in supramolecular entities or aggregates via intermolecular forces. Herein, a π-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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland