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Synthesis and characterization of alternating fluorene–thiophene copolymers bearing ethylene glycol side-chains
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Synthesis and characterization of alternating fluorene–thiophene copolymers bearing ethylene glycol side-chains
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Journal Article
Synthesis and characterization of alternating fluorene–thiophene copolymers bearing ethylene glycol side-chains
2011
Overview
AbstractNew alternating fluorene–thiophene copolymers are introduced bearing polar ethylene glycol-carboxylate functionalities on the thiophene ring to achieve enhanced solubility in polar solvents. Suzuki polycondensation was applied to synthesize a set of three polymers with differing lengths of the ethylene glycol side-chains. The polymers are thermally stable up to temperatures of 300 °C. Solutions of the polymers in CHCl3 show an absorption maximum at approximately 397 nm and a luminescence maximum of 472 nm in solutions with quantum yield of 30%. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels have been determined to be at −5.7 and −2.6 eV, respectively.Graphical abstract
Publisher
Springer Nature B.V
