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Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry

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Synthesis of polyquinoline ether and its optical sensor property in the presence of metal cations

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Title
Synthesis of polyquinoline ether and its optical sensor property in the presence of metal cations
Author
Lee, TSYang, ChangdukKim, JLLee, JKPark, WHWon, Y
Keywords
Fluorescence; Hyperchromic shift; Molecular recognition; Polyquinoline ether; Sensors; Stern-Volmer quenching constant
Issue Date
2002-06
Publisher
WILEY-BLACKWELL
Citation
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.40, no.11, pp.1831 - 1837
Abstract
Semirigid polyquinoline with a flexible ether linkage was prepared via Friedlander quinoline synthesis, of which monomer was obtained through a five-step synthesis. We investigated the polymer as a fluorescent sensor toward ferric ion that used a quinoline unit as a fluoroionophore group. The polymer solution in dimethylformamide/tetrahydrofuran showed the hyperchromic shift of the absorption maximum upon addition of metal ions exhibiting that the effect was clearly manifested upon exposure to ferric ion. A fluorescence quenching was observed in the presence of ferric ion corresponding to an interaction of the ferric cation to the polyquinoline ether, which results in a photoinduced electron-transfer quenching pathway showing a Stern-Volmer constant (KSV) of 7.17 × 103 (M-1).
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DOI
10.1002/pola.10270
ISSN
0887-624X
Appears in Collections:
ECHE_Journal Papers
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