Tetraalkoxylated-PPV derivative: An efficient and pure green electroluminescent polymer with good solution processability

Highly alkoxylated PPV copolymers for PLEDs: Syntheses, optical properties and enhancement of device lifetimes

“…Monomer 1 was prepared using a three-step route. The overall yield of the synthesis was approximately 10% starting from trimethoxybenzaldehyde [13]. The homopolymerization of monomer 1 was performed with an excess of potassium tert-butoxide in dry THF cooled in an ice bath under N 2 (known as the so-called Gilch route for PPV derivatives: the 1,2-elimination of hydrogen halide resulting in the generation of the conjugated PPV backbone).…”

“…Column chromatography was performed using silica-gel (Aldrich, 70-230 mesh). 1,4-Bis(chloromethyl)-2-(3,7-dimethyloctyloxy)-3,5,6-trimethoxybenzene, TALK-PPV and 4-bis(chloromethyl)-2-(3,7-dimethyloctyloxy)-5-methoxybenzene, DALK-PPV, were synthesized according to the previous reports [13,14]. 13 …”

“…13 C NMR spectra were collected on a Bruker Biospin Avance II 900 spectrometer, and chemical shifts were recorded in ppm units through the residual solvent resonance (dichloromethane: 54.0 ppm). FT-IR spectra were obtained from an IR100/IR200 spectrometer of Thermoelectron Corporation.…”

“…Recently we reported the syntheses of tetraalkoxy-substituted PPV derivatives (TALK-PPV) through the Gilch polymerization [12,13]. TALK-PPV showed highly efficient and pure green light emission.…”

Optimization of a poly( p -phenylene benzobisoxazole)-based light-emitting device with a complex cathode structure

“…This indicates that the devices are very stable and currently reach a moderate efficiency level compared with the similar PPV devices emitting green light. [13][14][15][16]…”