Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.polymer.2006.04.038
Title: A fluorene-containing water-soluble poly(p-phenyleneethynylene) derivative: Highly fluorescent and sensitive conjugated polymer with minor aggregation in aqueous solution
Authors: Huang, Y.-Q.
Fan, Q.-L.
Zhang, G.-W.
Chen, Y.
Lu, X.-M.
Huang, W. 
Keywords: Aggregation
Fluorescence
Water-soluble conjugated polymer
Issue Date: 12-Jul-2006
Citation: Huang, Y.-Q., Fan, Q.-L., Zhang, G.-W., Chen, Y., Lu, X.-M., Huang, W. (2006-07-12). A fluorene-containing water-soluble poly(p-phenyleneethynylene) derivative: Highly fluorescent and sensitive conjugated polymer with minor aggregation in aqueous solution. Polymer 47 (15) : 5233-5238. ScholarBank@NUS Repository. https://doi.org/10.1016/j.polymer.2006.04.038
Abstract: A novel cationic fluorene-containing water-soluble poly(p-phenyleneethynylene) (PPE) derivative, poly[(9,9-bis{6′-[(N,N-diethyl)-N-methylammonium]hexyl}-2,7-fluorenyleneethynylene)-alt-co-(2,5-bis{3′-[(N,N-diethyl)-N-methylammonium]-1′-oxapropyl}-1,4-phenylene)] tetraiodide (P1′), was synthesized through Sonogashira reaction and a post-polymerization treatment. P1′ emits bright blue fluorescence in H2O with a high photoluminescence quantum yield (Φpl=26%). Studies on the optical properties and quenching experiments with Fe (CN)6 4 - in H2O and MeOH show that P1′ presents minor aggregation and high Stern-Volmer constant (Ksv=2.4×108 M-1) in aqueous solution. The remarkably reduced tendency towards aggregation, relative to previously reported water-soluble PPEs, made the optical properties of P1′ almost insensitive to the disturbance from the common ions (non-quencher) in the solution. © 2006 Elsevier Ltd. All rights reserved.
Source Title: Polymer
URI: http://scholarbank.nus.edu.sg/handle/10635/91846
ISSN: 00323861
DOI: 10.1016/j.polymer.2006.04.038
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