Luminescent organoboron quinolate polymers.
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.
Qin
Yang
Y
Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, USA.
Pagba
Cynthia
C
Piotrowiak
Piotr
P
Jäkle
Frieder
F