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Molecular Wire Effects in Phenyleneethynylene Oligomers: Surprising Insights
Author(s) -
Hergert Marcel,
Bender Markus,
Seehafer Kai,
Bunz Uwe H. F.
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201705604
Subject(s) - picric acid , chemistry , tetramer , iodide , monomer , quenching (fluorescence) , polymer , conjugated system , dissociation (chemistry) , carboxylate , analyte , divalent , polymer chemistry , photochemistry , organic chemistry , inorganic chemistry , combinatorial chemistry , fluorescence , chromatography , physics , quantum mechanics , enzyme
The synthesis and quenching behavior of a series of water‐soluble, carboxylate‐carrying phenyleneethynylene oligomers—monomer to tetramer—and their polymers are reported; their quenching behavior with different test analytes (paraquat, lead salts, mercury salts, picric acid, methylpyridinium iodide) in water were investigated, and the results were compared to that of the conjugated polymer. Significant but analyte‐dependent enhancement effects were found. For monovalent quenchers, only the molecular wire effect applies, but for divalent quenchers multivalency effects are also important.