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Supramolecular Luminescence from Oligofluorenol-Based Supramolecular Polymer Semiconductors
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
Jiangsu-Singapore Joint Research Center for Organic/Bio-Electronics & Information Displays, Institute of Advanced Materials, Nanjing University of Technology, Nanjing 211816, China
These authors contributed equally to this work.
* Authors to whom correspondence should be addressed.
Received: 29 August 2013; in revised form: 21 October 2013 / Accepted: 29 October 2013 / Published: 13 November 2013
Abstract: 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.
Keywords: luminescence; supramolecular polymers; polyfluorenes; hydrogen bonds; thin films
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MDPI and ACS Style
Zhang, G.-W.; Wang, L.; Xie, L.-H.; Lin, J.-Y.; Huang, W. Supramolecular Luminescence from Oligofluorenol-Based Supramolecular Polymer Semiconductors. Int. J. Mol. Sci. 2013, 14, 22368-22379.
Zhang G-W, Wang L, Xie L-H, Lin J-Y, Huang W. Supramolecular Luminescence from Oligofluorenol-Based Supramolecular Polymer Semiconductors. International Journal of Molecular Sciences. 2013; 14(11):22368-22379.
Zhang, Guang-Wei; Wang, Long; Xie, Ling-Hai; Lin, Jin-Yi; Huang, Wei. 2013. "Supramolecular Luminescence from Oligofluorenol-Based Supramolecular Polymer Semiconductors." Int. J. Mol. Sci. 14, no. 11: 22368-22379.