Synthesis and characterization of phosphine/borane-terminated poly(silole-co-germole) for the evaluation of luminescent polymer light-emitting diode.
J Nanosci Nanotechnol
; 14(8): 6438-41, 2014 Aug.
Article
em En
| MEDLINE
| ID: mdl-25936133
ABSTRACT
Codehydrocoupling (using Red-Al) followed by borane/phosphine-capping (with Ph2BCl and Ph2PCl) of 1,1-dihydrotetraphenylsilole (1) and 1,1-dihydrotetraphenylgermole (2) (91 mole ratio) gave electroluminescent poly(silole-co-germole)s containing borane/phosphine-ends (3, 4) in high yield. The borane-terminated copolymer 3 emits at 522 nm and are electroluminescent at 521 nm. The fluorescence quantum yield of 3 in toluene is (1.60±0.30) x 10(-2). The phosphine-terminated copolymer 4 emits at 520 nm and are electroluminescent at 520 nm. The fluorescence quantum yield of 4 in toluene is (1.60±0.20) x 10(-2). 3 and 4 were then mixed in 11 ratio. The emission color of 3/4 mixture is green and the maximum brightness of the device is 2,760 cd/m2 with a luminous efficiency of 0.67 lm/W. The borane/phosphine end groups in the 11 mixture of 3 and 4 exhibited no appreciable effect on the luminescent properties in spite of possible B-P dative bonding. Ge-132 helped to increase the B-P dative bonding. The electroluminescent copolymers 3 and 4 are good candidates for PLED (polymer light-emitting diode) fabrication.
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Base de dados:
MEDLINE
Assunto principal:
Fosfinas
/
Polímeros
/
Boranos
/
Luz
Idioma:
En
Revista:
J Nanosci Nanotechnol
Ano de publicação:
2014
Tipo de documento:
Article