Synthesis and Characterization of Stannane-Terminated Poly(silole-co-germole) for the Evaluation of Luminescent Polymeric Light-Emitting Diode
Codehydrocoupling (with various inorganic hydrides) followed by stannane-capping (with Ph2SnHCl) of 1,1-dihydrotetraphenylsilole (1) and 1,1-dihydrotetraphenylgermole (2) (9:1 mol ratio) produces electroluminescent stannane-terminated poly(silole-co-germole)s (3) in high yield. The polymerization yield and molecular weight with Selectride increase in the order L-Selectride < N-Selectride < K-Selectride. The molecular weights increase in the order L-Selectride < Red-Al < N-Selectride < K-Selectride < Super-Hydride. The copolymer 3, a good candidate for PLED fabrication, emits at 523 nm and are electroluminescent at 521 nm. The fluorescence quantum yield of 3 in toluene is (1.61 ± 0.29) × 10−2. The emission color is green. The maximum brightness of the device is 3,750 cd/m2 with a luminous power efficiency of 0.67 lm/W.
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Document Type: Research Article
Publication date: 01 May 2011
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