Highly fluorescent conjugated polyelectrolyte nanostructures

Synthesis, self-assembly, and Al 3+ ion sensing

Jungmok You, Jeonghun Kim, Teahoon Park, Byeonggwan Kim, Eunkyoung Kim

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A highly fluorescent triazine-bridged polymer, poly[(diphenylamino-s- triazine)-co-(2-methoxy-5-propyloxysulfonate-1,4-phenylene vinylene)] (DTMSPV), is synthesized from Wittig polycondensation of a triazine monomer with a water-soluble p-phenylene vinylene monomer. The fluorescent amphiphilic polymer in aqueous solution self-assembled into nanoassemblies of micelle-like nanostructure (MS) and π stacking nanostructure (πS), which have average sizes of 93 to 270 nm, depending on the concentration of DTMSPV. The micelle-like nanostructure of DTMSPV (MS) shows blue emission at 457 and 488 nm with a high emission quantum yield (φ E) of 31% in aqueous solution. On the other hand, the φ E of π stacking structures (πS), formed in a highly concentrated solution, is lower than the MS. The MS exhibits fluorescence quenching as well as color change from blue to green/yellow, depending on the kinds of metal ions. The metal ion sensitivity is larger in the order of the main group ions (Na +, K +) < dicationic transition metal ions (Zn 2+, Cd 2+, Pb 2+, Cu 2+, Pd 2+) < trivalent transition metal ions (Fe 3+, Ru 3+), with an exception of Al 3+. In particular, the fluorescence of MS is dramatically quenched with color change to yellow in response to Al 3+ concentrations. The selectivity and sensitivity of MS to Al 3+ are unusually high even in the presence of competitive metal ions, which can be attributed to the specific interaction of triazine units with Al 3+.

Original languageEnglish
Pages (from-to)1417-1424
Number of pages8
JournalAdvanced Functional Materials
Volume22
Issue number7
DOIs
Publication statusPublished - 2012 Apr 10

Fingerprint

Polyelectrolytes
Triazines
Self assembly
Metal ions
self assembly
Nanostructures
metal ions
Ions
synthesis
Micelles
ions
Transition metals
micelles
Polymers
monomers
Monomers
Fluorescence
transition metals
aqueous solutions
Color

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Condensed Matter Physics
  • Electrochemistry

Cite this

You, Jungmok ; Kim, Jeonghun ; Park, Teahoon ; Kim, Byeonggwan ; Kim, Eunkyoung. / Highly fluorescent conjugated polyelectrolyte nanostructures : Synthesis, self-assembly, and Al 3+ ion sensing. In: Advanced Functional Materials. 2012 ; Vol. 22, No. 7. pp. 1417-1424.
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abstract = "A highly fluorescent triazine-bridged polymer, poly[(diphenylamino-s- triazine)-co-(2-methoxy-5-propyloxysulfonate-1,4-phenylene vinylene)] (DTMSPV), is synthesized from Wittig polycondensation of a triazine monomer with a water-soluble p-phenylene vinylene monomer. The fluorescent amphiphilic polymer in aqueous solution self-assembled into nanoassemblies of micelle-like nanostructure (MS) and π stacking nanostructure (πS), which have average sizes of 93 to 270 nm, depending on the concentration of DTMSPV. The micelle-like nanostructure of DTMSPV (MS) shows blue emission at 457 and 488 nm with a high emission quantum yield (φ E) of 31{\%} in aqueous solution. On the other hand, the φ E of π stacking structures (πS), formed in a highly concentrated solution, is lower than the MS. The MS exhibits fluorescence quenching as well as color change from blue to green/yellow, depending on the kinds of metal ions. The metal ion sensitivity is larger in the order of the main group ions (Na +, K +) < dicationic transition metal ions (Zn 2+, Cd 2+, Pb 2+, Cu 2+, Pd 2+) < trivalent transition metal ions (Fe 3+, Ru 3+), with an exception of Al 3+. In particular, the fluorescence of MS is dramatically quenched with color change to yellow in response to Al 3+ concentrations. The selectivity and sensitivity of MS to Al 3+ are unusually high even in the presence of competitive metal ions, which can be attributed to the specific interaction of triazine units with Al 3+.",
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Highly fluorescent conjugated polyelectrolyte nanostructures : Synthesis, self-assembly, and Al 3+ ion sensing. / You, Jungmok; Kim, Jeonghun; Park, Teahoon; Kim, Byeonggwan; Kim, Eunkyoung.

In: Advanced Functional Materials, Vol. 22, No. 7, 10.04.2012, p. 1417-1424.

Research output: Contribution to journalArticle

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AU - You, Jungmok

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N2 - A highly fluorescent triazine-bridged polymer, poly[(diphenylamino-s- triazine)-co-(2-methoxy-5-propyloxysulfonate-1,4-phenylene vinylene)] (DTMSPV), is synthesized from Wittig polycondensation of a triazine monomer with a water-soluble p-phenylene vinylene monomer. The fluorescent amphiphilic polymer in aqueous solution self-assembled into nanoassemblies of micelle-like nanostructure (MS) and π stacking nanostructure (πS), which have average sizes of 93 to 270 nm, depending on the concentration of DTMSPV. The micelle-like nanostructure of DTMSPV (MS) shows blue emission at 457 and 488 nm with a high emission quantum yield (φ E) of 31% in aqueous solution. On the other hand, the φ E of π stacking structures (πS), formed in a highly concentrated solution, is lower than the MS. The MS exhibits fluorescence quenching as well as color change from blue to green/yellow, depending on the kinds of metal ions. The metal ion sensitivity is larger in the order of the main group ions (Na +, K +) < dicationic transition metal ions (Zn 2+, Cd 2+, Pb 2+, Cu 2+, Pd 2+) < trivalent transition metal ions (Fe 3+, Ru 3+), with an exception of Al 3+. In particular, the fluorescence of MS is dramatically quenched with color change to yellow in response to Al 3+ concentrations. The selectivity and sensitivity of MS to Al 3+ are unusually high even in the presence of competitive metal ions, which can be attributed to the specific interaction of triazine units with Al 3+.

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