Luminescent organoboron quinolate polymers |
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Authors: | Qin Yang Pagba Cynthia Piotrowiak Piotr Jäkle Frieder |
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Institution: | Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, USA. |
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Abstract: | The synthesis of well-defined luminescent organoboron polymers via a novel three-step procedure starting from silylated polystyrene is reported. Highly selective borylation of poly(4-trimethylsilylstyrene) (PS-Si), followed by replacement of the bromine substituents in poly(4-dibromoborylstyrene) (PS-BBr) with substituted thienyl groups (R = H, 3-hexyl, 5-hexyl), and final introduction of the 8-hydroxyquinolato moiety yields a series of new organoboron quinolate polymers in 67-83% isolated yield. The hexyl-substituted polymers are highly soluble and solution-processable yielding thin films that efficiently emit light at 513-514 nm upon excitation at 395 nm. |
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