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Int. J. Mol. Sci. 2013, 14(11), 22368-22379; doi:10.3390/ijms141122368
Article

Supramolecular Luminescence from Oligofluorenol-Based Supramolecular Polymer Semiconductors

1,†
,
1,†
,
1,* , 1
 and
1,2,*
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 2 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 / Revised: 21 October 2013 / Accepted: 29 October 2013 / Published: 13 November 2013
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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 luminescence; supramolecular polymers; polyfluorenes; hydrogen bonds; thin films
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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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.

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