Hyperbranched polymer based on triphenylamine and pyridine: Fluorescent chemosensors for palladium ions

Two new hyperbranched fluorescent conjugated polymers containing pyridine units were synthesized via Heck coupling reaction and Sonogashira coupling reaction, respectively, and characterized by 1H NMR, 13C NMR, FTIR, and GPC. The copolymers are readily soluble in common organic solvents such as chlo...

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Bibliographic Details
Published inJournal of applied polymer science Vol. 121; no. 1; pp. 217 - 225
Main Authors Feng, Jichang, Zhang, Cong, Li, Yang, Yang, Mujie
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc., A Wiley Company 05.07.2011
Wiley
Wiley Subscription Services, Inc
Subjects
Applied sciences
Chelation
Copolymers
Exact sciences and technology
Fluorescence
hyperbranched
Joining
Materials science
Metal ions
Nuclear magnetic resonance
Organic polymers
Physicochemistry of polymers
Polymers
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
Pyridines
Quenching
sensors
hyperbranched
Palladium II
Photoluminescence
Fluorescence
Metal ion
Heck reaction
Condensation polymerization
Chemical sensor
Branched copolymer
Experimental study
Thermal stability
Thermal properties
Electrochemical properties
Conjugated copolymer
sensors
Fluorescent material
Polyynic compound
Optical properties
Preparation
Pyridine derivative copolymer
Aniline derivative copolymer
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Summary:Two new hyperbranched fluorescent conjugated polymers containing pyridine units were synthesized via Heck coupling reaction and Sonogashira coupling reaction, respectively, and characterized by 1H NMR, 13C NMR, FTIR, and GPC. The copolymers are readily soluble in common organic solvents such as chloroform, THF, and DMF. Thermal analysis revealed that the copolymers had good thermal stability. The fluorescence quenching behaviors of the hyperbranched copolymers by metal ions were studied. It was found that the fluorescence of the copolymers can be effectively quenched by Pd2+. Moreover, the two hyperbranched copolymers exhibited different quenching efficiency, which may be related to difference in the hindrance for the chelation of pyridine unit with metal ions of the two polymers. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
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ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.33527