Construction of supramolecular self-assembled microfibers with fluorescent properties through a modified ionic self-assembly (ISA) strategy.

Mingwei Zhao, Yurong Zhao, Liqiang Zheng, Caili Dai

School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong, 266580, PR China. zhaomingwei@upc.edu.cn

Chemistry (Weinheim an der Bergstrasse, Germany) 2013 Jan 14

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Highly ordered supramolecular microfibers were constructed through a simple ionic self-assembly strategy from complexes of the N-tetradecyl-N-methylpyrrolidinium bromide (C(14)MPB) surface-active ionic liquid and the small methyl orange (MO) dye molecule, with the aid of patent blue VF sodium salt. By using scanning electron microscopy and polarized optical microscopy, the width of these self-assembled microfibers is observed to be about 1 to 5 μm and their length is from tens of micrometers to almost a millimeter. The (1)H NMR spectra of the microfibers indicates that the supramolecular complexes are composed of C(14)MPB and MO in equal molar ratio. The electrostatic, hydrophobic, and π-π stacking interactions are regarded as the main driving forces for the formation of microfibers. Furthermore, through characterization by using confocal fluorescence microscopy, the microfibers were observed to show strong fluorescent properties and may find potential applications in many fields. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Citation

Mingwei Zhao, Yurong Zhao, Liqiang Zheng, Caili Dai. Construction of supramolecular self-assembled microfibers with fluorescent properties through a modified ionic self-assembly (ISA) strategy. Chemistry (Weinheim an der Bergstrasse, Germany). 2013 Jan 14;19(3):1076-81